Radar interferometric imaging for the EISCAT Svalbard Radar

Size: px
Start display at page:

Download "Radar interferometric imaging for the EISCAT Svalbard Radar"

Transcription

1 Radar interferometric imaging for the EISCAT Svalbard Radar Tom Grydeland 1,2 Jorge L. Chau 3 César La Hoz 1 1 Department of Physics, University of Tromsø 2 Currently at the University Centre on Svalbard 3 Jicamarca Radio Observatory XXVIII URSI General Assembly, Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

2 Outline 1 Scientific rationale Naturally enhanced ion-acoustic echoes PMSE Meteors 2 Antenna construction and testing 3 Antenna configuration and calibration First deployment ( ) Full deployment Phase calibration 4 Experiences at Jicamarca Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

3 Scientific rationale Naturally enhanced ion-acoustic echoes Associated with Langmuir turbulence in the auroral ionosphere power spectra in db (42m ant), 0.2 second integration, starting at range [km] range [km] frequency [khz] Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

4 Scientific rationale Naturally enhanced ion-acoustic echoes Connection to visible aurora on small spatial and temporal timescales (ODIN auroral imager) upshifted, alt > 529 km b2 downshifted, alt > 529 km Line b upshifted, alt < 529 km c (center) downshifted, alt < 529 km Line a b1 b2 (Grydeland et al., 2004; Blixt et al., 2005) lag time [s] b1 Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

5 Scientific rationale Naturally enhanced ion-acoustic echoes Shown to arise in narrow filaments (Grydeland et al., 2003, 2004) power spectra [db], 42m ant power spectra [db], 32m ant range [km] max structure size vs coherence at different ranges 700 km 500 km 300 km 100 km range [km] coherence cross phase [rad] structure size [km] frequency [khz] frequency [khz] coherence Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

6 Scientific rationale Naturally enhanced ion-acoustic echoes Contributions from imaging in this application disambiguate position for up-/downshifted enhancement pinpoint relation to visible auroral forms decide whether filaments are cylindrical or sheet-like (relation to satellite observations, e.g. by Ørsted) Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

7 Scientific rationale Naturally enhanced ion-acoustic echoes Contributions from imaging in this application disambiguate position for up-/downshifted enhancement pinpoint relation to visible auroral forms decide whether filaments are cylindrical or sheet-like (relation to satellite observations, e.g. by Ørsted) Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

8 Scientific rationale Naturally enhanced ion-acoustic echoes Contributions from imaging in this application disambiguate position for up-/downshifted enhancement pinpoint relation to visible auroral forms decide whether filaments are cylindrical or sheet-like (relation to satellite observations, e.g. by Ørsted) Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

9 Scientific rationale Polar Mesospheric Summer Echoes (PMSE) ESRAD at 52 MHz, Yu et al., (2001) Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

10 Scientific rationale Polar Mesospheric Summer Echoes (PMSE) Contributions from imaging in this application help remove space/time ambiguity shed light on the scattering process? Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

11 Scientific rationale Polar Mesospheric Summer Echoes (PMSE) Contributions from imaging in this application help remove space/time ambiguity shed light on the scattering process? Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

12 Scientific rationale Meteors Jicamarca at 50 MHz, Chau and Woodman (2004) Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

13 Scientific rationale Meteors Contributions from imaging in this application work on arrival angle of meteors done at Jicamarca, close to the equator majority of meteors come from the apex ESR at high latitude sees larger section of the ecliptic plane Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

14 Scientific rationale Meteors Contributions from imaging in this application work on arrival angle of meteors done at Jicamarca, close to the equator majority of meteors come from the apex ESR at high latitude sees larger section of the ecliptic plane Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

15 Scientific rationale Meteors Contributions from imaging in this application work on arrival angle of meteors done at Jicamarca, close to the equator majority of meteors come from the apex ESR at high latitude sees larger section of the ecliptic plane Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

16 Antenna construction and testing 18-element Yagi antennas UHF TV antennas, band db gain impedance matched to 50 Ω Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

17 Antenna construction and testing 18-element Yagi antennas UHF TV antennas, band db gain impedance matched to 50 Ω Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

18 Antenna construction and testing 18-element Yagi antennas UHF TV antennas, band db gain impedance matched to 50 Ω Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

19 Antenna construction and testing Combining elements into an array Created from railing/scaffolding components Inter-element distance 1.2 m, or 2λ Inter-element distance can be varied Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

20 Antenna construction and testing Combining elements into an array Created from railing/scaffolding components Inter-element distance 1.2 m, or 2λ Inter-element distance can be varied Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

21 Antenna construction and testing Combining elements into an array Created from railing/scaffolding components Inter-element distance 1.2 m, or 2λ Inter-element distance can be varied Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

22 Antenna construction and testing Combining elements into an array Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

23 Antenna construction and testing Measuring the antenna diagram Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

24 Antenna construction and testing Measuring the antenna diagram From this, the beam width (FWHM) is 7.1, in both polarizations Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

25 Antenna construction and testing Surveying the site Photo by A. P. van Eyken Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

26 Antenna construction and testing Analog electronics Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

27 First deployment ( ) one antenna, 4 4 array of 18-element Yagi antennas 15.5 db gain per antenna, 25.5 db gain total First light March 2005 Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

28 First deployment ( ) one antenna, 4 4 array of 18-element Yagi antennas 15.5 db gain per antenna, 25.5 db gain total First light March 2005 Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

29 First deployment ( ) one antenna, 4 4 array of 18-element Yagi antennas 15.5 db gain per antenna, 25.5 db gain total First light March 2005 Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

30 First deployment ( ) Antenna configuration and visibility samples Positions, 1 antenna, uniform Vis. samples, 1 antenna, uniform Metres North Metres East Metres North Metres East Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

31 First deployment ( ) Satellite echo in three antennas Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

32 Full deployment Antenna configuration and visibility samples Positions, 5 antennas, complete uniform Vis. samples, 5 antennas, complete uniform Metres North Metres East Metres North Metres East Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

33 Full deployment Simulated images Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

34 Phase calibration For what we have done so far, phase calibration does not matter For imaging, phase calibration is very important when running in conjunction with cameras, satellites can be used for calibration (work underway at RAL, Sullivan et al., 2005) For daytime/summertime operations, other solutions must be found (radio stars, beacons, suggestions welcome) Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

35 Phase calibration For what we have done so far, phase calibration does not matter For imaging, phase calibration is very important when running in conjunction with cameras, satellites can be used for calibration (work underway at RAL, Sullivan et al., 2005) For daytime/summertime operations, other solutions must be found (radio stars, beacons, suggestions welcome) Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

36 Phase calibration For what we have done so far, phase calibration does not matter For imaging, phase calibration is very important when running in conjunction with cameras, satellites can be used for calibration (work underway at RAL, Sullivan et al., 2005) For daytime/summertime operations, other solutions must be found (radio stars, beacons, suggestions welcome) Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

37 Phase calibration For what we have done so far, phase calibration does not matter For imaging, phase calibration is very important when running in conjunction with cameras, satellites can be used for calibration (work underway at RAL, Sullivan et al., 2005) For daytime/summertime operations, other solutions must be found (radio stars, beacons, suggestions welcome) Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

38 Experiences at JRO (May June 2005) Imaging of non-specular meteor trails Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

39 Experiences at JRO (May June 2005) Preliminary results Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

40 Some Further Reading Blixt, E. M., T. Grydeland, N. Ivchenko, T. Hagfors, C. La Hoz, B. S. Lanchester, U. P. Løvhaug, and T. S. Trondsen, Dynamic rayed aurora and enhanced ion-acoustic radar echoes, Ann. Geophys., 23(1), 3 11, Chau, J. L., and R. F. Woodman, Observations of meteor-head echoes using the Jicamarca 50 MHz radar in interferometer mode, Atmos. Chem. Phys., 4(2), , Grydeland, T., C. La Hoz, T. Hagfors, E. M. Blixt, S. Saito, A. Strømme, and A. Brekke, Interferometric observations of filamentary structures associated with plasma instability in the auroral ionosphere, Geophys. Res. Lett., 30(6), 1338, doi: /2002gl016362, Grydeland, T., E. M. Blixt, U. P. Løvhaug, T. Hagfors, C. La Hoz, and T. S. Trondsen, Interferometric radar observations of filamented structures due to plasma instabilities and their relation to dynamic auroral rays, Ann. Geophys., 22(4), , Grydeland, T., J. Chau, C. La Hoz, and A. Brekke, An imaging interferometry capability for the EISCAT Svalbard Radar, Ann. Geophys., 23(1), , Grydeland et al. (UiT/UNIS/JRO) Interferometric imaging for the ESR URSI / 26

Phase calibration of the EISCAT Svalbard Radar interferometer using optical satellite signatures

Phase calibration of the EISCAT Svalbard Radar interferometer using optical satellite signatures Ann. Geophys., 24, 2419 2427, 2006 European Geosciences Union 2006 Annales Geophysicae Phase calibration of the EISCAT Svalbard Radar interferometer using optical satellite signatures J. M. Sullivan 1,

More information

Radars: Powerful tools to study the Upper Atmosphere

Radars: Powerful tools to study the Upper Atmosphere Radars: Powerful tools to study the Upper Atmosphere Jorge L. Chau 1 and Roger H. Varney 2 1 Radio Observatorio de Jicamarca, Instituto Geofísico del Perú, Lima 2 Electrical and Computer Engineering, Cornell

More information

Lag profile inversion method for EISCAT data analysis

Lag profile inversion method for EISCAT data analysis Ann. Geophys., 26, 571 581, 2008 European Geosciences Union 2008 Annales Geophysicae Lag profile inversion method for EISCAT data analysis I. I. Virtanen 1, M. S. Lehtinen 2, T. Nygrén 1, M. Orispää 2,

More information

The EISCAT Heating Facility

The EISCAT Heating Facility The EISCAT Heating Facility Michael Rietveld EISCAT Tromsø, Norway EISCAT radar school, 30 Aug-4 Sept, 2010, Sodankylä 1 Outline Description of the hardware Antenna beams Practical details- power levels

More information

EISCAT_3D The next generation European Incoherent Scatter radar system Introduction and Brief Background

EISCAT_3D The next generation European Incoherent Scatter radar system Introduction and Brief Background EISCAT_3D The next generation European Incoherent Scatter radar system Introduction and Brief Background The high latitude environment is of increasing importance, not only for purely scientific studies,

More information

AGF-216. The Earth s Ionosphere & Radars on Svalbard

AGF-216. The Earth s Ionosphere & Radars on Svalbard AGF-216 The Earth s Ionosphere & Radars on Svalbard Katie Herlingshaw 07/02/2018 1 Overview Radar basics what, how, where, why? How do we use radars on Svalbard? What is EISCAT and what does it measure?

More information

New applications of the portable heater. Gennady Milikh, UMD-SPP group

New applications of the portable heater. Gennady Milikh, UMD-SPP group New applications of the portable heater Gennady Milikh, UMD-SPP group 1 Stabilization of equatorial spread F (ESF) by ion injection 2 ESF characterizes spreading in the height of F-region backscatter return

More information

ISR Coordinated Science at Equatorial Latitudes

ISR Coordinated Science at Equatorial Latitudes ISR Coordinated Science at Equatorial Latitudes J. L. Chau 1, D. L. Hysell 2, and E. Kudeki 3 1 Radio Observatorio de Jicamarca, Instituto Geofísico del Perú, Lima 2 Earth and Atmospheric Sciences, Cornell

More information

Observations of Mesosphere Summer Echoes with calibrated VHF radars at latitudes between 54 N and 69 N in summer 2004

Observations of Mesosphere Summer Echoes with calibrated VHF radars at latitudes between 54 N and 69 N in summer 2004 Observations of Mesosphere Summer Echoes with calibrated VHF radars at latitudes between 54 N and 69 N in summer 2004 R. Latteck, W. Singer Leibniz-Institut für Atmosphärenphysik, Schloss-Str. 6, D-18225

More information

Radio-induced incoherent scatter ion line enhancements with wide altitude extents in the high-latitude ionosphere

Radio-induced incoherent scatter ion line enhancements with wide altitude extents in the high-latitude ionosphere GEOPHYSICAL RESEARCH LETTERS, VOL. 4, 6, doi:.2/grl.5272, 23 Radio-induced incoherent scatter ion line enhancements with wide altitude extents in the high-latitude ionosphere A. Senior, M. T. Rietveld,

More information

PMSE dependence on frequency observed simultaneously with VHF and UHF radars in the presence of precipitation

PMSE dependence on frequency observed simultaneously with VHF and UHF radars in the presence of precipitation Plasma Science and Technology PAPER PMSE dependence on frequency observed simultaneously with VHF and UHF radars in the presence of precipitation To cite this article: Safi ULLAH et al 2018 Plasma Sci.

More information

Phase and pattern calibration of the Jicamarca Radio Observatory radar using satellites

Phase and pattern calibration of the Jicamarca Radio Observatory radar using satellites doi:10.1093/mnras/stu2177 Phase and pattern calibration of the Jicamarca Radio Observatory radar using satellites B. Gao and J. D. Mathews Radar Space Sciences Lab, Pennsylvania State University, University

More information

Jicamarca Radio Observatory: 50 years of scientific and engineering achievements

Jicamarca Radio Observatory: 50 years of scientific and engineering achievements Jicamarca Radio Observatory: 50 years of scientific and engineering achievements Jorge L. Chau, David L. Hysell and Marco A. Milla Radio Observatorio de Jicamarca, Instituto Geofísico del Perú, Lima Outline

More information

EISCAT Experiments. Anders Tjulin EISCAT Scientific Association 2nd March 2017

EISCAT Experiments. Anders Tjulin EISCAT Scientific Association 2nd March 2017 EISCAT Experiments Anders Tjulin EISCAT Scientific Association 2nd March 2017 Contents 1 Introduction 3 2 Overview 3 2.1 The radar systems.......................... 3 2.2 Antenna scan patterns........................

More information

Plasma Turbulence of Non-Specular Trail Plasmas as Measured by a High Power Large Aperture Radar

Plasma Turbulence of Non-Specular Trail Plasmas as Measured by a High Power Large Aperture Radar Space Environment and Satellite Systems Plasma Turbulence of Non-Specular Trail Plasmas as Measured by a High Power Large Aperture Radar Jonathan Yee and Sigrid Close Stanford University January 9, 2013

More information

PLASMA LINE STUDIES IN RELATION TO NATURALLY ENHANCED ION ACOUSTIC LINES (NEIALS)

PLASMA LINE STUDIES IN RELATION TO NATURALLY ENHANCED ION ACOUSTIC LINES (NEIALS) FYS-3931 MASTER S THESIS IN SPACE PHYSICS PLASMA LINE STUDIES IN RELATION TO NATURALLY ENHANCED ION ACOUSTIC LINES (NEIALS) Joachim S. Knutsen JUNE, 2008 FACULTY OF SCIENCE Department of Physics and Technology

More information

Aperture synthesis radar imaging in coherent scatter radars: Lesson from Jicamarca

Aperture synthesis radar imaging in coherent scatter radars: Lesson from Jicamarca Aperture synthesis radar imaging in coherent scatter radars: Lesson from Jicamarca J. L. Chau1, D. L. Hysell2, and M. Urco1 1Radio Observatorio Jicamarca, Instituto Geofísico del Perú, Lima 2Earth and

More information

Enhanced incoherent scatter plasma lines

Enhanced incoherent scatter plasma lines Ann. Geophysicae 14, 1462 1472 (1996) EGS Springer-Verlag 1996 Enhanced incoherent scatter plasma lines H. Nilsson, S. Kirkwood, J. Lilensten, M. Galand Swedish Institute of Space Physics, Box 812, S-981

More information

GEOPHYSICS AND GEOCHEMISTRY - Vol.II - Ionosphere And Upper Atmosphere Research With Radars - Jürgen Röttger

GEOPHYSICS AND GEOCHEMISTRY - Vol.II - Ionosphere And Upper Atmosphere Research With Radars - Jürgen Röttger IONOSPHERE AND UPPER ATMOSPHERE RESEARCH WITH RADARS Jürgen Röttger Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany Keywords:Ionosphere, middle atmosphere, thermosphere, ionosonde, MST radar,

More information

Experimental Studies of RF Generated Ionospheric Turbulence

Experimental Studies of RF Generated Ionospheric Turbulence Experimental Studies of RF Generated Ionospheric Turbulence J. P. Sheerin 1 ; N. Watanabe 1 ; N. Rayyan 1 ; B. J Watkins 2 ; W. A. Bristow 2 ; 1 Department of Physics and Astronomy Eastern Michigan Univ.

More information

SuperDARN (Super Dual Auroral Radar Network)

SuperDARN (Super Dual Auroral Radar Network) SuperDARN (Super Dual Auroral Radar Network) What is it? How does it work? Judy Stephenson Sanae HF radar data manager, UKZN Ionospheric radars Incoherent Scatter radars AMISR Arecibo Observatory Sondrestrom

More information

Existing and future networks of ionospheric radars in polar regions &

Existing and future networks of ionospheric radars in polar regions & Existing and future networks of ionospheric radars in polar regions & EoI#159:ISPAM EISCAT Scientific Association Existing networks SuperDarn Middle atmosphere radars Incoherent Scatter Radars SuperDARN

More information

Introduction to Ionospheric Radar Remote Sensing

Introduction to Ionospheric Radar Remote Sensing Introduction to Ionospheric Radar Remote Sensing John D Sahr Department of Electrical Engineering University of Washington CEDAR 2006 huge thanks to NSF for their support outline What is radar? Why use

More information

A STUDY OF DOPPLER BEAM SWINGING USING AN IMAGING RADAR

A STUDY OF DOPPLER BEAM SWINGING USING AN IMAGING RADAR .9O A STUDY OF DOPPLER BEAM SWINGING USING AN IMAGING RADAR B. L. Cheong,, T.-Y. Yu, R. D. Palmer, G.-F. Yang, M. W. Hoffman, S. J. Frasier and F. J. López-Dekker School of Meteorology, University of Oklahoma,

More information

Results of Ionospheric Heating Experiments Involving an Enhancement in Electron Density in the High Latitude Ionosphere

Results of Ionospheric Heating Experiments Involving an Enhancement in Electron Density in the High Latitude Ionosphere Results of Ionospheric Heating Experiments Involving an Enhancement in Electron Density in the High Latitude Ionosphere WU Jun ( ) 1,2, WU Jian ( ) 1,2, XU Zhengwen ( ) 1,2 1 Key Lab for Electromagnetic

More information

Radio Observatorio de Jicamarca - Instituto Geofísico del Perú

Radio Observatorio de Jicamarca - Instituto Geofísico del Perú JRO Operations INCOHERENT ECHOES Experiments summary EXPERIME NTS MEASURED PARAMETERS RANGE (km) RESOLUTION (HEIGHT TIME) ANTENNA TRANSMITTER S (POWER) Duty Cycle (%) HYBRID2 (Long Pulse-LP and Double

More information

Using the Radio Spectrum to Understand Space Weather

Using the Radio Spectrum to Understand Space Weather Using the Radio Spectrum to Understand Space Weather Ray Greenwald Virginia Tech Topics to be Covered What is Space Weather? Origins and impacts Analogies with terrestrial weather Monitoring Space Weather

More information

Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at HAARP

Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at HAARP Click Here for Full Article JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 111,, doi:10.1029/2005ja011363, 2006 Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at

More information

Measurements of doppler shifts during recent auroral backscatter events.

Measurements of doppler shifts during recent auroral backscatter events. Measurements of doppler shifts during recent auroral backscatter events. Graham Kimbell, G3TCT, 13 June 2003 Many amateurs have noticed that signals reflected from an aurora are doppler-shifted, and that

More information

Dependence of radar signal strength on frequency and aspect angle of nonspecular meteor trails

Dependence of radar signal strength on frequency and aspect angle of nonspecular meteor trails Click Here for Full Article JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 113,, doi:10.1029/2007ja012647, 2008 Dependence of radar signal strength on frequency and aspect angle of nonspecular meteor trails S.

More information

Modification of the high latitude ionosphere F region by X-mode powerful HF radio waves: Experimental results from multiinstrument

Modification of the high latitude ionosphere F region by X-mode powerful HF radio waves: Experimental results from multiinstrument Modification of the high latitude ionosphere F region by X-mode powerful HF radio waves: Experimental results from multiinstrument diagnostics N. F. Blagoveshchenskaya 1, T. D. Borisova 1, T. K. Yeoman

More information

The Role of Ground-Based Observations in M-I I Coupling Research. John Foster MIT Haystack Observatory

The Role of Ground-Based Observations in M-I I Coupling Research. John Foster MIT Haystack Observatory The Role of Ground-Based Observations in M-I I Coupling Research John Foster MIT Haystack Observatory CEDAR/GEM Student Workshop Outline Some Definitions: Magnetosphere, etc. Space Weather Ionospheric

More information

On the characterization of radar receivers for meteor-head echoes studies

On the characterization of radar receivers for meteor-head echoes studies RADIO SCIENCE, VOL. 48, 33 41, doi:10.1029/2012rs005034, 2013 On the characterization of radar receivers for meteor-head echoes studies F. R. Galindo, 1 J. Urbina, 1 J. L. Chau, 2 L. Dyrud, 3 and M. Milla

More information

IONOSPHERE AND ATMOSPHERE RESEARCH WITH RADARS

IONOSPHERE AND ATMOSPHERE RESEARCH WITH RADARS IONOSPHERE AND ATMOSPHERE RESEARCH WITH RADARS Jürgen Röttger, Max-Planck-Institut, Lindau, Germany published in UNESCO Encyclopedia of Life Support Systems (EOLSS), Geophysics and Geochemistry, 6.16.5.3,

More information

Artificial small scale field aligned irregularities in the high latitude F region of the ionosphere induced by an X mode HF heater wave

Artificial small scale field aligned irregularities in the high latitude F region of the ionosphere induced by an X mode HF heater wave GEOPHYSICAL RESEARCH LETTERS, VOL. 38,, doi:10.1029/2011gl046724, 2011 Artificial small scale field aligned irregularities in the high latitude F region of the ionosphere induced by an X mode HF heater

More information

Localization of auroral Langmuir turbulence in thin layers

Localization of auroral Langmuir turbulence in thin layers JOURNAL OF GEOPHYSICAL RESEARCH: SPACE PHYSICS, VOL. 118, 3576 3583, doi:10.1002/jgra.50314, 2013 Localization of auroral Langmuir turbulence in thin layers H. Akbari, 1 J. L. Semeter, 1 M. J. Nicolls,

More information

Technique Evaluation for Calibrating the COBRA Meteor Radar System

Technique Evaluation for Calibrating the COBRA Meteor Radar System Technique Evaluation for Calibrating the COBRA Meteor Radar System Chunmei Kang a, Scott Palo a a Department of Aerospace Engineering Sciences, University of Colorado, 431 UCB, Boulder, CO 80309, USA Abstract

More information

How GNSS and Beacon receivers can be used to monitor auroral ionosphere and space weather?

How GNSS and Beacon receivers can be used to monitor auroral ionosphere and space weather? How GNSS and Beacon receivers can be used to monitor auroral ionosphere and space weather? Kirsti Kauristie, Finnish Meteorological Institute Special Thanks: J. Norberg (FMI), A. Aikio and T. Nygren (University

More information

Experimental Observations of ELF/VLF Wave Generation Using Optimized Beam-Painting

Experimental Observations of ELF/VLF Wave Generation Using Optimized Beam-Painting Experimental Observations of ELF/VLF Wave Generation Using Optimized Beam-Painting R. C. Moore Department of Electrical and Computer Engineering University of Florida, Gainesville, FL 32611. Abstract Observations

More information

Radio Waves in the Ionosphere

Radio Waves in the Ionosphere Radio Waves in the Ionosphere E. S. Geospace and Earth Science Group Johns Hopkins University Applied Physics Laboratory 24 June 2012 Introduction Scope History Ionospheric propagation Ionospheric irregularities

More information

Ch. III - Limits of single polarity antennas in the VHF and UHF bands

Ch. III - Limits of single polarity antennas in the VHF and UHF bands Ch. III - Limits of single polarity antennas in the VHF and UHF bands Ch. I 2014 QSB origins 2 m Faraday Ch. II 2016 Extension of Excel sheet to VHF and UHF bands From studies by Giorgio Marchi, IK1UWL

More information

Jøran Moen University of Oslo Also at The University Centre in Svalbard

Jøran Moen University of Oslo Also at The University Centre in Svalbard The ICI series of Space Weather Rockets Jøran Moen University of Oslo Also at The University Centre in Svalbard GPS ERROR SOURCES Courtesy of Alfonsi IONOSPHERIC EFFECTS ON GPS SIGNALS L-band scintillations

More information

Solar Imaging and Space Weather. using MWA and RAPID. Colin Lonsdale. MIT Haystack Observatory

Solar Imaging and Space Weather. using MWA and RAPID. Colin Lonsdale. MIT Haystack Observatory Solar Imaging and Space Weather using MWA and RAPID Colin Lonsdale MIT Haystack Observatory Gerfeest, 5 November 2013 MWA - The Finished Array 3 Dynamic Spectrum (One MWA baseline) MWA data reduction by

More information

Ionospheric effect of HF surface wave over-the-horizon radar

Ionospheric effect of HF surface wave over-the-horizon radar RADIO SCIENCE, VOL. 41,, doi:10.1029/2005rs003323, 2006 Ionospheric effect of HF surface wave over-the-horizon radar Huotao Gao, 1 Geyang Li, 1 Yongxu Li, 1 Zijie Yang, 1 and Xiongbin Wu 1 Received 25

More information

Impact of the low latitude ionosphere disturbances on GNSS studied with a three-dimensional ionosphere model

Impact of the low latitude ionosphere disturbances on GNSS studied with a three-dimensional ionosphere model Impact of the low latitude ionosphere disturbances on GNSS studied with a three-dimensional ionosphere model Susumu Saito and Naoki Fujii Communication, Navigation, and Surveillance Department, Electronic

More information

Australian Wind Profiler Network and Data Use in both Operational and Research Environments

Australian Wind Profiler Network and Data Use in both Operational and Research Environments Australian Wind Profiler Network and Data Use in both Operational and Research Environments Bronwyn Dolman 1,2 and Iain Reid 1,2 1 ATRAD Pty Ltd 20 Phillips St Thebarton South Australia www.atrad.com.au

More information

SHEDDING NEW LIGHT ON SOLITARY WAVES OBSERVED IN SPACE

SHEDDING NEW LIGHT ON SOLITARY WAVES OBSERVED IN SPACE University of Iowa SHEDDING NEW LIGHT ON SOLITARY WAVES OBSERVED IN SPACE J. S. Pickett, L.-J. Chen, D. A. Gurnett, J. M. Swanner, O. SantolRk P. M. E. Décréau, C. BJghin, D. Sundkvist, B. Lefebvre, M.

More information

High time resolution observations of HF cross-modulation within the D region ionosphere

High time resolution observations of HF cross-modulation within the D region ionosphere GEOPHYSICAL RESEARCH LETTERS, VOL. 4, 1912 1916, doi:1.12/grl.5391, 213 High time resolution observations of HF cross-modulation within the D region ionosphere J. Langston 1 andr.c.moore 1 Received 17

More information

Resolute Bay VHF radar: A multipurpose tool for studies of tropospheric motions, middle atmosphere dynamics, meteor physics, and ionospheric physics

Resolute Bay VHF radar: A multipurpose tool for studies of tropospheric motions, middle atmosphere dynamics, meteor physics, and ionospheric physics Radio Science, Volume 36, Number 6, Pages 1839 1857, November December 2001 Resolute Bay VHF radar: A multipurpose tool for studies of tropospheric motions, middle atmosphere dynamics, meteor physics,

More information

Monitoring the polar cap/ auroral ionosphere: Industrial applications. P. T. Jayachandran Physics Department University of New Brunswick Fredericton

Monitoring the polar cap/ auroral ionosphere: Industrial applications. P. T. Jayachandran Physics Department University of New Brunswick Fredericton Monitoring the polar cap/ auroral ionosphere: Industrial applications P. T. Jayachandran Physics Department University of New Brunswick Fredericton Outline Ionosphere and its effects on modern and old

More information

Joint observations with the Puerto Rico CubeSat, the Aguadilla Radio Array, and Arecibo Observatory

Joint observations with the Puerto Rico CubeSat, the Aguadilla Radio Array, and Arecibo Observatory SSC17-IX-02 Joint observations with the Puerto Rico CubeSat, the Aguadilla Radio Array, and Arecibo Observatory Brett Isham Interamerican University of Puerto Rico bisham@bayamon.inter.edu Jan Bergman

More information

F-region electron heating by X-mode radiowaves in underdense conditions

F-region electron heating by X-mode radiowaves in underdense conditions Ann. Geophys., 27, 2585 2592, 2009 Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. Annales Geophysicae F-region electron heating by X-mode radiowaves in underdense

More information

System phase calibration of VHF spaced antennas using the echoes of aircraft and incorporating the frequency domain interferometry technique

System phase calibration of VHF spaced antennas using the echoes of aircraft and incorporating the frequency domain interferometry technique RADIO SCIENCE, VOL. 37, NO. 5, 1080, doi:10.1029/2002rs002604, 2002 System phase calibration of VHF spaced antennas using the echoes of aircraft and incorporating the frequency domain interferometry technique

More information

Study of small scale plasma irregularities. Đorđe Stevanović

Study of small scale plasma irregularities. Đorđe Stevanović Study of small scale plasma irregularities in the ionosphere Đorđe Stevanović Overview 1. Global Navigation Satellite Systems 2. Space weather 3. Ionosphere and its effects 4. Case study a. Instruments

More information

VHF Propagation Overview 5-Oct-2016

VHF Propagation Overview 5-Oct-2016 VHF Propagation Overview 5-Oct-2016 G0RVM 1 VHF Propagation Where in the radio spectrum is VHF? 30MHz to 300MHz for radio amateurs its 50MHz, 70MHz & 144MHz or 6m, 4m & 2m Name some types of VHF propagation?

More information

1. Terrestrial propagation

1. Terrestrial propagation Rec. ITU-R P.844-1 1 RECOMMENDATION ITU-R P.844-1 * IONOSPHERIC FACTORS AFFECTING FREQUENCY SHARING IN THE VHF AND UHF BANDS (30 MHz-3 GHz) (Question ITU-R 218/3) (1992-1994) Rec. ITU-R PI.844-1 The ITU

More information

Space weather: A research grand challenge. Professor Jøran Moen (GCI-Cusp project scientist)

Space weather: A research grand challenge. Professor Jøran Moen (GCI-Cusp project scientist) Space weather: A research grand challenge Professor Jøran Moen (GCI-Cusp project scientist) Birkeland Space Weather Symposium 15 JUNE 2017 Outline: Space weather phenomena in cusp Research Grand Challenges

More information

Ship echo discrimination in HF radar sea-clutter

Ship echo discrimination in HF radar sea-clutter Ship echo discrimination in HF radar sea-clutter A. Bourdillon (), P. Dorey () and G. Auffray () () Université de Rennes, IETR/UMR CNRS 664, Rennes Cedex, France () ONERA, DEMR/RHF, Palaiseau, France.

More information

First measurements of radar coherent scatter by the Radio Aurora Explorer CubeSat

First measurements of radar coherent scatter by the Radio Aurora Explorer CubeSat GEOPHYSICAL RESEARCH LETTERS, VOL. 39,, doi:10.1029/2012gl052249, 2012 First measurements of radar coherent scatter by the Radio Aurora Explorer CubeSat H. Bahcivan, 1 J. W. Cutler, 2 M. Bennett, 3 B.

More information

MST radar observations of meteor showers and trail induced irregularities in the ionospheric E region

MST radar observations of meteor showers and trail induced irregularities in the ionospheric E region Indian Journal of Radio & Space Physics Vol. 39, June 2010, pp. 138-143 MST radar observations of meteor showers and trail induced irregularities in the ionospheric E region N Rakesh Chandra 1,$,*, G Yellaiah

More information

Amplitude domain estimation of narrow incoherent radar targets

Amplitude domain estimation of narrow incoherent radar targets Manuscript prepared for Ann. Geophys. with version 1.3 of the L A TEX class copernicus.cls. Date: 3 January 2008 Amplitude domain estimation of narrow incoherent radar targets Juha Vierinen 1, Markku S.

More information

Patch Antennas UNIK9700 Radio and Mobility

Patch Antennas UNIK9700 Radio and Mobility Patch Antennas UNIK9700 Radio and Mobility Johan Tresvig PhD Candidate Dept. of Physics, UiO j.l.tresvig@fys.uio.no 1 Outline Introduction Patch antennas Theory - Rectangular patch antenna Case study Design

More information

Incoherent Scatter Experiment Parameters

Incoherent Scatter Experiment Parameters Incoherent Scatter Experiment Parameters At a fundamental level, we must select Waveform type Inter-pulse period (IPP) or pulse repetition frequency (PRF) Our choices will be dictated by the desired measurement

More information

The new MST radar on Andøya/Norway

The new MST radar on Andøya/Norway The new MST radar on Andøya/Norway Ralph Latteck, Werner Singer, Markus Rapp, Toralf Renkwitz Leibniz Institute of Atmospheric Physics, Schloss-Str. 6, 18225 Kühlungsborn, Germany 18th ESA Symposium on

More information

A Multidimensional Characterization of MUIR Backscatter Spectra Resulting from Ionospheric Heating Experiments Performed at HAARP

A Multidimensional Characterization of MUIR Backscatter Spectra Resulting from Ionospheric Heating Experiments Performed at HAARP Eastern Michigan University DigitalCommons@EMU Master's Theses and Doctoral Dissertations Master's Theses, and Doctoral Dissertations, and Graduate Capstone Projects 3-14-2015 A Multidimensional Characterization

More information

A new incoherent scatter technique in the EISCAT Svalbard Radar

A new incoherent scatter technique in the EISCAT Svalbard Radar RADIO SCIENCE, VOL. 37, NO. 4, 10.1029/2001RS002518, 2002 A new incoherent scatter technique in the EISCAT Svalbard Radar Markku Lehtinen, 1 Jussi Markkanen, 1 Antero Väänänen, 1 Asko Huuskonen, 2 Baylie

More information

Overview of Lightning Research at University of New Hampshire

Overview of Lightning Research at University of New Hampshire Overview of Lightning Research at University of New Hampshire Ningyu Liu and Joseph Dwyer Department of Physics & Space Science Center (EOS) University of New Hampshire Northeast Radio Observatory Corporation

More information

Dartmouth College SuperDARN Radars

Dartmouth College SuperDARN Radars Dartmouth College SuperDARN Radars Under the guidance of Thayer School professor Simon Shepherd, a pair of backscatter radars were constructed in the desert of central Oregon over the Summer and Fall of

More information

Future of the HAARP Facility. Bob McCoy Director, Geophysical Institute University of Alaska Fairbanks

Future of the HAARP Facility. Bob McCoy Director, Geophysical Institute University of Alaska Fairbanks Future of the HAARP Facility Bob McCoy Director, Geophysical Institute University of Alaska Fairbanks rpmccoy@alaska.edu 1 US Chairmanship 2015-2017 Future Space Research in Alaska: Integrated networks

More information

Automatically determining the origin direction and propagation mode of high-frequency radar backscatter

Automatically determining the origin direction and propagation mode of high-frequency radar backscatter RESEARCH ARTICLE 10.100/015RS005808 Key Points: HF radar backscatter returns from in front of and behind the radar Elevation angles are used to determine backscatter propagation path Interpretation of

More information

Biomass, a polarimetric interferometric P-band SAR mission

Biomass, a polarimetric interferometric P-band SAR mission Biomass, a polarimetric interferometric P-band SAR mission M. Arcioni, P. Bensi, M. Fehringer, F. Fois, F. Heliere, N. Miranda, K. Scipal Fringe 2015, ESRIN 27/03/2015 The Biomass Mission 1. Biomass was

More information

Radar Reprinted from "Waves in Motion", McGourty and Rideout, RET 2005

Radar Reprinted from Waves in Motion, McGourty and Rideout, RET 2005 Radar Reprinted from "Waves in Motion", McGourty and Rideout, RET 2005 What is Radar? RADAR (Radio Detection And Ranging) is a way to detect and study far off targets by transmitting a radio pulse in the

More information

An Introduction to Antennas

An Introduction to Antennas May 11, 010 An Introduction to Antennas 1 Outline Antenna definition Main parameters of an antenna Types of antennas Antenna radiation (oynting vector) Radiation pattern Far-field distance, directivity,

More information

EISCAT_3D Research infrastructure for incoherent scatter radar studies of the environment

EISCAT_3D Research infrastructure for incoherent scatter radar studies of the environment EISCAT_3D Research infrastructure for incoherent scatter radar studies of the environment Document prepared by EISCAT Scientific Association 13th April 2012 Contents 1 Executive Summary 3 2 Introduction

More information

LOFAR: Special Issues

LOFAR: Special Issues Netherlands Institute for Radio Astronomy LOFAR: Special Issues John McKean (ASTRON) ASTRON is part of the Netherlands Organisation for Scientific Research (NWO) 1 Preamble http://www.astron.nl/~mckean/eris-2011-2.pdf

More information

Frequency Dependence of VLF Wave Generation at Gakona, Alaska

Frequency Dependence of VLF Wave Generation at Gakona, Alaska Frequency Dependence of VLF Wave Generation at Gakona, Alaska Spencer P. Kuo 1, Maurice Rubinraut 1, Yen-Liang Wu 1, R. Pradipta 2, J.A. Cohen 2, M.C. Lee 2,3 1 Dept of Electrical & Computer Engineering,

More information

Radioastronomy in Space with Cubesats

Radioastronomy in Space with Cubesats Radioastronomy in Space with Cubesats Baptiste Cecconi (1), Philippe Zarka (1), Marc Klein Wolt (2), Jan Bergman (3), Boris Segret (1) (1) LESIA, CNRS-Observatoire de Paris, France (2) Radboud University

More information

SNIPE mission for Space Weather Research. CubeSat Developers Workshop 2017 Jaejin Lee (KASI)

SNIPE mission for Space Weather Research. CubeSat Developers Workshop 2017 Jaejin Lee (KASI) SNIPE mission for Space Weather Research CubeSat Developers Workshop 2017 Jaejin Lee (KASI) New Challenge with Nanosatellites In observing small-scale plasma structures, single satellite inherently suffers

More information

BRAMS : the Belgian RAdio Meteor Stations

BRAMS : the Belgian RAdio Meteor Stations BRAMS : the Belgian RAdio Meteor Stations A new facility to detect and characterize meteors Hervé Lamy & Stijn Calders Belgian Institute for Space Aeronomy Overview Radio meteor observations: forward scattering

More information

Some Recent Advances in Ionospheric Modification Research

Some Recent Advances in Ionospheric Modification Research Some Recent Advances in Ionospheric Modification Research W. A. Scales Director, Center for Space Science and Engineering Research Bradley Department of Electrical and Computer Engineering Crofton Department

More information

Novel Approach in Cross-Spectral signal Analysis using Interferometry Technique.

Novel Approach in Cross-Spectral signal Analysis using Interferometry Technique. Novel Approach in Cross-Spectral signal Analysis using Interferometry Technique.. Professor, Dept of ECE, Gayatri Vidyaparishad College of Engineering (Autonomous), Visakhapatnam. Abstract 1. Radar Interferometer

More information

Development of a passive VHF radar system using software-defined radio for equatorial plasma instability studies

Development of a passive VHF radar system using software-defined radio for equatorial plasma instability studies RADIO SCIENCE, VOL. 48, 416 426, doi:10.1002/rds.20047, 2013 Development of a passive VHF radar system using software-defined radio for equatorial plasma instability studies B. Tuysuz, 1 J. Urbina, 1 and

More information

GNSS-R for Ocean and Cryosphere Applications

GNSS-R for Ocean and Cryosphere Applications GNSS-R for Ocean and Cryosphere Applications E.Cardellach and A. Rius Institut de Ciències de l'espai (ICE/IEEC-CSIC), Spain Contents Altimetry with Global Navigation Satellite Systems: Model correlation

More information

Electron acceleration and ionization fronts induced by high frequency plasma turbulence

Electron acceleration and ionization fronts induced by high frequency plasma turbulence Eliasson, Bengt (2014) Electron acceleration and ionization fronts induced by high frequency plasma turbulence. In: 41st IOP Plasma Physics Conference, 2014-04-14-2014-04-17, Grand Connaught Rooms., This

More information

EISCAT_3D New Generation Large Scale Incoherent Scatter Radar Facility in Northern Scandinavia

EISCAT_3D New Generation Large Scale Incoherent Scatter Radar Facility in Northern Scandinavia EISCAT_3D New Generation Large Scale Incoherent Scatter Radar Facility in Northern Scandinavia Esa Turunen EISCAT Scientific Association, Kiruna, Sweden The EISCAT_3D Design Study Team (2005-2009): Henrik

More information

Paul Bernhardt 1, Carl Siefring 1, Andrew Yau 2, H. Gordon James 3. Naval Research Laboratory, Washington, DC. University of Calgary, Alberta, Canada

Paul Bernhardt 1, Carl Siefring 1, Andrew Yau 2, H. Gordon James 3. Naval Research Laboratory, Washington, DC. University of Calgary, Alberta, Canada Space Based Instrumentation for Future Detection of Artificial ULF/ELF/VLF waves and Their Effects using the Canadian Sponsored Enhanced Polar Outflow Project (epop) Satellite Paul Bernhardt 1, Carl Siefring

More information

Incoherent Scatter Radars Present, Past and Future. Bob Robinson Geospace Facilities Program National Science Foundation

Incoherent Scatter Radars Present, Past and Future. Bob Robinson Geospace Facilities Program National Science Foundation Incoherent Scatter Radars Present, Past and Future Bob Robinson Geospace Facilities Program National Science Foundation 3. It is difficult to imagine an area of space science research that does not benefit

More information

To: Deuterium Array Group From: Alan E.E. Rogers, K.A. Dudevoir and B.J. Fanous Subject: Low Cost Array for the 327 MHz Deuterium Line

To: Deuterium Array Group From: Alan E.E. Rogers, K.A. Dudevoir and B.J. Fanous Subject: Low Cost Array for the 327 MHz Deuterium Line DEUTERIUM ARRAY MEMO #068 MASSACHUSETTS INSTITUTE OF TECHNOLOGY HAYSTACK OBSERVATORY WESTFORD, MASSACHUSETTS 01886 August 2, 2007 Telephone: 978-692-4764 Fax: 781-981-0590 To: Deuterium Array Group From:

More information

First Results from the 2014 Coordinated Measurements Campaign with HAARP and CASSIOPE/ePOP

First Results from the 2014 Coordinated Measurements Campaign with HAARP and CASSIOPE/ePOP First Results from the 2014 Coordinated Measurements Campaign with HAARP and CASSIOPE/ePOP Carl L. Siefring, Paul A. Bernhardt, Stanley J. Briczinski, and Michael McCarrick Naval Research Laboratory Matthew

More information

Radio wave power distribution at HF frequencies as modelled for the Radio Receiver Instrument (RRI) on the epop satellite mission

Radio wave power distribution at HF frequencies as modelled for the Radio Receiver Instrument (RRI) on the epop satellite mission Radio wave power distribution at HF frequencies as modelled for the Radio Receiver Instrument (RRI) on the epop satellite mission G. C. Hussey, R. G. Gillies, G. J. Sofko, and H. G. James SuperDARN Workshop

More information

Notes 21 Introduction to Antennas

Notes 21 Introduction to Antennas ECE 3317 Applied Electromagnetic Waves Prof. David R. Jackson Fall 018 Notes 1 Introduction to Antennas 1 Introduction to Antennas Antennas An antenna is a device that is used to transmit and/or receive

More information

Traveling Wave Antennas

Traveling Wave Antennas Traveling Wave Antennas Antennas with open-ended wires where the current must go to zero (dipoles, monopoles, etc.) can be characterized as standing wave antennas or resonant antennas. The current on these

More information

Correlation of in situ measurements of plasma irregularities with ground based scintillation observations

Correlation of in situ measurements of plasma irregularities with ground based scintillation observations Click Here for Full Article JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 115,, doi:10.1029/2010ja015288, 2010 Correlation of in situ measurements of plasma irregularities with ground based scintillation observations

More information

Currents, Electrojets and Instabilities. John D Sahr Electrical Engineering University of Washington 19 June 2016

Currents, Electrojets and Instabilities. John D Sahr Electrical Engineering University of Washington 19 June 2016 Currents, Electrojets and Instabilities John D Sahr Electrical Engineering University of Washington 19 June 2016 Outline The two main sources of large scale currents in the ionosphere: solar-wind/magnetosphere,

More information

Letter to the Editor SCIPION, a new flexible ionospheric sounder in Senegal

Letter to the Editor SCIPION, a new flexible ionospheric sounder in Senegal Ann. Geophysicae 16, 738 742 (1998) EGS Springer-Verlag 1998 Letter to the Editor SCIPION, a new flexible ionospheric sounder in Senegal Y. M. Le Roux, J. Ménard, J. P. Jolivet, P. J. Davy France Telecom

More information

GMES Sentinel-1 Transponder Development

GMES Sentinel-1 Transponder Development GMES Sentinel-1 Transponder Development Paul Snoeij Evert Attema Björn Rommen Nicolas Floury Malcolm Davidson ESA/ESTEC, European Space Agency, Noordwijk, The Netherlands Outline 1. GMES Sentinel-1 overview

More information

RAPID A Portable and Reconfigurable Imaging Interferometer Array

RAPID A Portable and Reconfigurable Imaging Interferometer Array RAPID A Portable and Reconfigurable Imaging Interferometer Array Colin Lonsdale, Frank Lind and a team of ~10 MIT Haystack Observatory Cambridge University Team Led by Andy Faulkner JPL Team Led by Chris

More information

Transmit Antenna for Ionospheric Sounding Applications Rob Redmon 1 and Terence Bullett 2

Transmit Antenna for Ionospheric Sounding Applications Rob Redmon 1 and Terence Bullett 2 Transmit Antenna for Ionospheric Sounding Applications Rob Redmon 1 and Terence Bullett 2 1 NOAA, National Geophysical Data Center, E/GC2, 325 Broadway Boulder CO, USA ; Rob.Redmon@noaa.gov 2 University

More information

Extended Application of a Novel Phase Calibration Approach of Multiple-Frequency Range Imaging to the Chung-Li and MU VHF Radars

Extended Application of a Novel Phase Calibration Approach of Multiple-Frequency Range Imaging to the Chung-Li and MU VHF Radars 2488 J O U R N A L O F A T M O S P H E R I C A N D O C E A N I C T E C H N O L O G Y VOLUME 26 Extended Application of a Novel Phase Calibration Approach of Multiple-Frequency Range Imaging to the Chung-Li

More information

Half-Wave Dipole. Radiation Resistance. Antenna Efficiency

Half-Wave Dipole. Radiation Resistance. Antenna Efficiency Antennas Simple Antennas Isotropic radiator is the simplest antenna mathematically Radiates all the power supplied to it, equally in all directions Theoretical only, can t be built Useful as a reference:

More information