T2L2 and beyond next generation time transfer schemes
|
|
- Letitia Underwood
- 5 years ago
- Views:
Transcription
1 T2L2 and beyond next generation time transfer schemes Etienne Samain Patrick Vrancken Optical Clocks Workshop for ESA Cosmic Vision, Uni Düsseldorf, March 9, 2007 Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 1
2 Agenda 1. Overview T2L2 2. Upgraded version (T2L2) 2 3. post-t2l2: next generation optical time transfer 4. Other 5. Résumé Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 2
3 Time Transfer by Laser Link (T2L2) Time Tagging of laser pulses emitted from a laser station towards the satellite Start Time at ground station t s (ground clock) Arrival time at satellite t b (on-board clock) Return Time at ground station t r (ground clock) Satellite equipment: Clock, Photo detector and Event Timer, Reflector (CC) Ground Equipment: Satellite Laser Ranging Station with Event Timer and Clock Time Transfer between ground clock and space clock Triplet Construction for each laser pulse( t s, t b, t r ) Computation of the time offset : X A = t s + t 2 r t b + τ Relativity + τ Atmosphere + τ Instrument Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 3
4 T2L2 on Jason 2 Native Instruments Altimeter: Poseïdon 3 Radiometer: AMS Positioning systems: Doris GPS Laser ranging Passenger Instrument Radiation Measurements: LPT & Carmen 2 Time Transfer: T2L2 T2L2 (Optics) T2L2 (Electronics) Orbit Altitude 1336 km, i = 66, P = 6800 s Max distance in common view: 6500 km Single pass: ~1000s Time interval between pass 2h < T < 14h 3 to 6 passes per day Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 4
5 T2L2 Space Instrument Synoptic Allocations Masse : 8.0 kg (Elec.) kg (Optic) Power : 40 W Volume : 270x280x150 mm 3 (Elec.) and 160x116x102 mm 3 (Optic - Ø 30x100 & Ø62x100) Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 5
6 T2L2 Ground Segment: Laser Station Laser station: pulsed laser (mostly doubled Nd:YAG/YO 4, 532nm, pulsewidth 20 to 300ps, 10Hz to 1kHz reprate) Event timer with associated clock (Cs, Rubidium+GPS, H-Maser) Laser pulse transmission detector for Tx date Laser pulse receive detector for Rx date: Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 6
7 Laser Station MeO and FTLRS MeO rejuvenated Laser Lune : faster and more precise telescope motorization ameliorated laser system dedicated lab for operational laser ranging dedicated labs/space for experiments (w/ access to telescope) ready in summer 2008 MéO, Grasse FTLRS: French Transportable Laser Ranging Station world s first and smallest mobile laser ranging station Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 7
8 Ground Segment - Network Participating stations in the ILRS network: sufficient equipment: event timer & clock Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 8
9 T2L2 expected performance Ground to satellite time transfer time stability: pour τ 0 = 0.1 s E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 9
10 T2L2 expected performance - 2 Ground to ground time transfer time stability common view: two laser stations A and B firing simultaneously towards T2L2: Non Common View σ x (τ) (ps) Onboard clock limitation (DORIS USO) non-common view: consecutive passes over two ground Possibility stations to A calibrate and BRF links (with dead time τ AB ): for τ > 1 day Common View Stability: < s < 10 1 day Accuracy: < 100 ps Cold atoms clocks from > 1000 s Cold Atoms Clock Ground to Ground Transfer (Common view) Ground to Ground Transfer (Non Common view - 300s) Ground to Ground Transfer (Non Common view s) Ground to Ground Transfer (Non Common view s) TWSTFT GPS - Carrier Phase τ (s) Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 10
11 Status July 2006: Tests on the Engineering Model Nov 06 to Feb 07: Qualification tests Delivery of flight model March/April 07: Calibration and performance tests with dedicated test bench in clean room at CNES, Toulouse April to June 07: Integration into satellite June 07: Performance verification tests Launch scheduled for mid-2008 Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 11
12 Improvements for a (T2L2) 2 what we would first improve on T2L2 (space instrument): of course. the clock! (but that doesn t matter here) Retro-reflector: Mono-Corner-Cube instead of pyramid of CCs: Geometry: Equivalent point of detection equivalent point of reflection better spectral filter possible improvements on: detector: higher bandwidth timer: higher resolution (vernier at higher frequencies), shorter dead time Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 12
13 Improvements for a (T2L2) 2 cont d and what we would further do (on the laser) if we had some extra : Higher repetition rate faster acquisition Two color telemetry: lower white noise on measured distance shorter pulse width higher precision drawback: below ~20 ps the pulses will suffer atmospheric dispersion need for atmospheric pre-compensation by negative-chirp control in order to arrive chirp-free (i.e. transform limited) on T2L2 detector Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 13
14 Future: Laser station w/ f-comb Replacement of Nd:YAG by high-power femto-second laser Dispersion control short pulses implicate large spectral bandwidth Æ magnification of receiving noise when adapting spectral filters to pulse BW Æ SNR take advantage of frequency combs: Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 14
15 Other Transponders (see talk Ulrich Schreiber) One-way telemetry: TIPO: Differential time/distance measurement based on the exactitude & stability of an embarked clock Based on the timing of laser pulses in different temporal reference frames: transmitting laser stations receiver on satellite Issued from classical lunar/satellite laser ranging but with link budget ~ d² LLR/SLR max distance: Moon One-way max distance: Solar system Linear Photo- Detection Spectral Filter Laser pulse Telemetry Coarse Timing (FPGA) Res = 100 ns Calculator Clock Temporal Filter (x pseudo random code) Fine Timing (Vernier) Res = 10 ps Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 15 Frequency Synthesis
16 pour résumer Advantages of optical link (like in T2L2): mono-carrier two-way scheme optical carrier permits very high frequency modulation geometry of optical systems allows for very precise spatial reference points not sensitive to ionosphere T2L2 will be available in 2008 is already able to read cold atom clocks is easily upgradeable Toulouse, 13 avril 2006 Patrick Vrancken Banc de Test Métrologique 16
T2L2 ON JASON-2: FIRST EVALUATION OF THE FLYING MODEL
T2L2 ON JASON-2: FIRST EVALUATION OF THE FLYING MODEL Ph. Guillemot, I. Petitbon Microwave & Time-Frequency Department CNES French Space Agency Toulouse, France E. Samain, P. Vrancken, J. Weick, D. Albanese,
More informationTIME TRANSFER BY LASER LINK - T2L2: RESULTS OF THE FIRST YEAR OF OPERATION
TIME TRANSFER BY LASER LINK - T2L2: RESULTS OF THE FIRST YEAR OF OPERATION Philippe Guillemot CNES French Space Agency, Toulouse, France E-mail: philippe.guillemot@cnes.fr Pierre Exertier Observatoire
More informationTIME TRANSFER BY LASER LINK - T2L2 : AN OPPORTUNITY TO CALIBRATE RF LINKS
TIME TRANSFER BY LASER LINK - T2L2 : AN OPPORTUNITY TO CALIBRATE RF LINKS Philippe Guillemot CNES French Space Agency, Toulouse, France philippe.guillemot@cnes.fr Etienne Samain, Observatoire de la Côte
More informationTIME TRANSFER BY LASER LINK T2L2: AN OPPORTUNITY TO CALIBRATE RF LINKS
TIME TRANSFER BY LASER LINK T2L2: AN OPPORTUNITY TO CALIBRATE RF LINKS Philippe Guillemot CNES French Space Agency, Toulouse, France E-mail: philippe.guillemot@cnes.fr Etienne Samain, Patrick Vrancken,
More informationTime & Frequency Transfer
Cold Atoms and Molecules & Applications in Metrology 16-21 March 2015, Carthage, Tunisia Time & Frequency Transfer Noël Dimarcq SYRTE Systèmes de Référence Temps-Espace, Paris Thanks to Anne Amy-Klein
More informationStatus of the ACES mission
Moriond Workshop, March 2003 «Gravitational Waves and Experimental Gravity» Status of the ACES mission The ACES system The ACES payload : - space clocks : PHARAO and SHM - on-board comparisons - space-ground
More informationStatus of MOLI development MOLI (Multi-footprint Observation Lidar and Imager)
Status of MOLI development MOLI (Multi-footprint Observation Lidar and Imager) Tadashi IMAI, Daisuke SAKAIZAWA, Jumpei MUROOKA and Toshiyoshi KIMURA JAXA 1 Outline of This Presentation 1. Overview of MOLI
More informationPoS(PhotoDet 2012)051
Optical to electrical detection delay in avalanche photodiode based detector and its interpretation Josef Blažej 1 E-mail: blazej@fjfi.cvut.cz Ivan Procházka Jan Kodet Technical University in Munich FSG,
More informationMicrowave Transponders and Links ACES MWL and beyond
Workshop on Optical Clocks Düsseldorf, 08 / 09 Mar 2007 Microwave Transponders and Links ACES MWL and beyond W. SCHÄFER 1, M.P. HESS 2, 1 TimeTech GmbH, Stuttgart, Germany Wolfgang.Schaefer@timetech.de
More informationTIME TRANSFER EXPERIMENT BY TCE ON THE ETS-VIII SATELLITE
TIME TRANSFER EXPERIMENT BY TCE ON THE ETS-VIII SATELLITE Fumimaru Nakagawa, Yasuhiro Takahashi, Jun Amagai, Ryo Tabuchi, Shin ichi Hama, and Mizuhiko Hosokawa National Institute of Information and Communications
More informationDeveloping An Optical Ground Station For The CHOMPTT CubeSat Mission. Tyler Ritz
Developing An Optical Ground Station For The CHOMPTT CubeSat Mission Tyler Ritz tritz@ufl.edu Background and Motivation Application of precision time transfer to space Satellite navigation systems ( x
More informationA phase coherent optical link through the turbulent atmosphere
A phase coherent optical link through the turbulent atmosphere Mini-DOLL : Deep Space Optical Laser Link Presented by : Khelifa DJERROUD people involved : Acef Ouali (SYRTE) Clairon André(SYRTE) Lemonde
More informationMERLIN Mission Status
MERLIN Mission Status CNES/illustration David DUCROS, 2016 G. Ehret 1, P. Bousquet 2, B. Millet 3, M. Alpers 1, C. Deniel 3, A. Friker 1, C. Pierangelo 3 1 Deutsches Zentrum für Luft- und Raumfahrt (DLR)
More informationIndustry Day of the Copernicus Sentinel-5 and Jason-CS Projects
Industry Day of the Copernicus Sentinel-5 and Jason-CS Projects With the present announcement, the European Space Agency and Astrium GmbH Satellites (Germany) inform the EMITS Users (European Companies
More informationRecent achievements in photon counting laser time transfer
Recent achievements in photon counting laser time transfer I. Prochazka 1, J. Kodet 1,2, J. Blazej 1 Presented at ACES Workshop Fundamental and applied science with clocks and cold atoms in space University
More informationPrecise Common-View Time and Frequency Transfer (PCVTFT) based on BDS GEO Satellite
IGS workshop 2016, UNSW, Australia Precise Common-View Time and Frequency Transfer (PCVTFT) based on BDS GEO Satellite Yang Xuhai,Wei Pei,Sun Baoqi,Liu Jihua,Wang Wei National Time Service Center (NTSC),Chinese
More informationCubeSat Communications Review and Concepts. Workshop, July 2, 2009
CubeSat Communications Review and Concepts CEDAR CubeSats Constellations and Communications Workshop, July 2, 29 Charles Swenson Presentation Outline Introduction slides for reference Link Budgets Data
More informationEnhancing space situational awareness using passive radar from space based emitters of opportunity
Tracking Space Debris Craig Benson School of Engineering and IT Enhancing space situational awareness using passive radar from space based emitters of opportunity Space Debris as a Problem Debris is fast
More informationTHE OPS-SAT NANOSATELLITE MISSION
THE OPS-SAT NANOSATELLITE MISSION Aerospace O.Koudelka, TU Graz M.Wittig MEW Aerospace D.Evans ESA 1 Contents 1) Introduction 2) ESA s OPS-SAT Mission 3) System Design 4) Communications Experiments 5)
More informationSPREAD SPECTRUM CHANNEL MEASUREMENT INSTRUMENT
SPACE SPREAD SPECTRUM CHANNEL MEASUREMENT INSTRUMENT Satellite communications, earth observation, navigation and positioning and control stations indracompany.com SSCMI SPREAD SPECTRUM CHANNEL MEASUREMENT
More informationGalileo. 7th ITFS, Rome, Italy, 3-5 November Dr. Stefan Bedrich. Kayser-Threde GmbH Wolfratshauser Str Munich
Kayser-Threde GmbH Wolfratshauser Str. 48 81379 Munich spacetech@kayser-threde.com Galileo 7th ITFS, Rome, Italy, 3-5 November 2009 Dr. Stefan Bedrich w w w. k a y s e r - t h r e d e. c o m Outline Motivation
More informationNASDA S PRECISE ORBIT DETERMINATION SYSTEM
NASDA S PRECISE ORBIT DETERMINATION SYSTEM Maki Maeda Takashi Uchimura, Akinobu Suzuki, Mikio Sawabe National Space Development Agency of Japan (NASDA) Sengen 2-1-1, Tsukuba, Ibaraki, 305-8505, JAPAN E-mail:
More informationCompact High Resolution Imaging Spectrometer (CHRIS) siraelectro-optics
Compact High Resolution Imaging Spectrometer (CHRIS) Mike Cutter (Mike_Cutter@siraeo.co.uk) Summary CHRIS Instrument Design Instrument Specification & Performance Operating Modes Calibration Plan Data
More informationKazuhiro TANAKA GCOM project team/jaxa April, 2016
Kazuhiro TANAKA GCOM project team/jaxa April, 216 @ SPIE Asia-Pacific 216 at New Dehli, India 1 http://suzaku.eorc.jaxa.jp/gcom_c/index_j.html GCOM mission and satellites SGLI specification and IRS overview
More informationDATA COMPRESSION & PROCESSING
DATA COMPRESSION & PROCESSING Telemetry Encryption Unit (TMEU) Video Signal Processing Unit IR (BEV-IR) Video Electronic Unit (VEU) CCD Detection Electronics TELEMETRY ENCRYPTION UNIT (TMEU) Satellite
More informationDeveloping two-way free-space optical communication links to connect atomic clocks on the ground with atomic clocks in orbit.
Developing two-way free-space optical communication links to connect atomic clocks on the ground with atomic clocks in orbit. Nov 7 th 2018 Michael Taylor Supervisor: Prof. Leo Hollberg Fundamental Physics
More informationA LATERAL SENSOR FOR THE ALIGNMENT OF TWO FORMATION-FLYING SATELLITES
A LATERAL SENSOR FOR THE ALIGNMENT OF TWO FORMATION-FLYING SATELLITES S. Roose (1), Y. Stockman (1), Z. Sodnik (2) (1) Centre Spatial de Liège, Belgium (2) European Space Agency - ESA/ESTEC slide 1 Outline
More informationChallenges and Solutions for GPS Receiver Test
Challenges and Solutions for GPS Receiver Test Presenter: Mirin Lew January 28, 2010 Agenda GPS technology concepts GPS and GNSS overview Assisted GPS (A-GPS) Basic tests required for GPS receiver verification
More informationDesign of a Free Space Optical Communication Module for Small Satellites
Design of a Free Space Optical Communication Module for Small Satellites Ryan W. Kingsbury, Kathleen Riesing Prof. Kerri Cahoy MIT Space Systems Lab AIAA/USU Small Satellite Conference August 6 2014 Problem
More informationCHOMPTT (CubeSat Handling of Multisystem Precision Timing Transfer): From Concept to Launch Pad
CHOMPTT (CubeSat Handling of Multisystem Precision Timing Transfer): From Concept to Launch Pad SmallSat 2017 : August, 6 th 2017 Presenter: Seth Nydam 2 Watson Attai 1, Nathan Barnwell 2, Maria Carrasquilla
More informationSatellite Laser Retroreflectors for GNSS Satellites: ILRS Standard
Satellite Laser Retroreflectors for GNSS Satellites: ILRS Standard Michael Pearlman Director Central Bureau International Laser Ranging Service Harvard-Smithsonian Center for Astrophysics Cambridge MA
More informationACES ELT laser link performance and ps accuracy optical time transfer
ACES ELT laser link performance and ps accuracy optical time transfer Ivan Prochazka1 Luigi Cacciapuoti2, Ulrich Schreiber3, Wolfgang Schäfer4 Presented at the Conference From Quantum to Cosmos, Universite
More informationOptical Time Transfer for Future Disaggregated Small Satellite Navigation Systems
Optical Time Transfer for Future Disaggregated Small Satellite Navigation Systems John W. Conklin*, Nathan Barnwell, Leopoldo Caro, Maria Carrascilla, Olivia Formoso, Seth Nydam, Paul Serra, Norman Fitz-Coy
More informationStatus Report on Time and Frequency Activities at CSIR-NPL India
Status Report on Time and Frequency Activities at CSIR-NPL India (APMP -TCTF 2016) S. Panja, A. Agarwal, D. Chadha, P. Arora, P. Thorat, S. De, S. Yadav, P. Kandpal, M. P. Olaniya and V. N. Ojha (Da Nang,
More informationELECTROMAGNETIC PROPAGATION (ALT, TEC)
ELECTROMAGNETIC PROPAGATION (ALT, TEC) N. Picot CNES, 18 Av Ed Belin, 31401 Toulouse, France Email : Nicolas.Picot@cnes.fr ABSTRACT For electromagnetic propagation, the ionosphere plays a key role. This
More informationSub-system and System Level Testing and Calibration of Space Altimeters and LIDARS.
Sub-system and System Level Testing and Calibration of Space Altimeters and LIDARS. Haris Riris, Pete Liiva, Xiaoli Sun, James Abshire Laser Remote Sensing Branch Goddard Space Flight Center, Greenbelt,
More informationLISA AIV/T. N. Dinu Jaeger ARTEMIS. [joint work with APC and CNES]
LISA AIV/T N. Dinu Jaeger ARTEMIS [joint work with APC and CNES] Outline General configuration of LISA payload & MOSA Top level MOSA AIV/T flow description Main French MOSA AIV/T activities Proposal for
More informationOther Space Geodetic Techniques. E. Calais Purdue University - EAS Department Civil 3273
Other Space Geodetic Techniques E. Calais Purdue University - EAS Department Civil 3273 ecalais@purdue.edu Satellite Laser Ranging = SLR Measurement of distance (=range) between a ground station and a
More informationCCTF Working Group on coordination of the development of advanced time and frequency transfer techniques (WG ATFT)
CCTF/12-43 CCTF Working Group on coordination of the development of advanced time and frequency transfer techniques (WG ATFT) Report to the19th meeting of the Consultative Committee for Time and Frequency,
More informationOther Space Geodetic Techniques. E. Calais Purdue University - EAS Department Civil 3273
Other Space Geodetic Techniques E. Calais Purdue University - EAS Department Civil 3273 ecalais@purdue.edu Satellite Laser Ranging Measurement of distance (=range) between a ground station and a satellite
More informationLTE. Tester of laser range finders. Integrator Target slider. Transmitter channel. Receiver channel. Target slider Attenuator 2
a) b) External Attenuators Transmitter LRF Receiver Transmitter channel Receiver channel Integrator Target slider Target slider Attenuator 2 Attenuator 1 Detector Light source Pulse gene rator Fiber attenuator
More informationNGSLR's measurement of the retro-reflector array response of various LEO to GNSS satellites
NGSLR's measurement of the retro-reflector array response of various LEO to GNSS satellites Jan McGarry Christopher Clarke, John Degnan, Howard Donovan, Benjamin Han, Julie Horvath, Thomas Zagwodzki NASA/GSFC
More informationAIM payload OPTEL-D. Multi-purpose laser communication system. Presentation to: AIM Industry Days ESTEC, 22nd February 2016
AIM payload OPTEL-D Multi-purpose laser communication system Presentation to: AIM Industry Days ESTEC, 22nd February 2016 Outline 1. Objectives OPTEL-D 2. Technology Development Activities 3. OPTEL-D payload
More informationAltimeter Range Corrections
Altimeter Range Corrections Schematic Summary Corrections Altimeters Range Corrections Altimeter range corrections can be grouped as follows: Atmospheric Refraction Corrections Sea-State Bias Corrections
More informationOcean SAR altimetry. from SIRAL2 on CryoSat2 to Poseidon-4 on Jason-CS
Ocean SAR altimetry from SIRAL2 on CryoSat2 to Poseidon-4 on Jason-CS Template reference : 100181670S-EN L. Phalippou, F. Demeestere SAR Altimetry EGM NOC, Southampton, 26 June 2013 History of SAR altimetry
More informationTwo- Stage Control for CubeSat Optical Communications
Two- Stage Control for CubeSat Optical Communications Ryan W. Kingsbury Kathleen Riesing, Tam Nguyen, Prof. Kerri Cahoy MIT Space Systems Lab CalPoly CubeSat Developers Workshop April 24, 2014 Outline
More informationTIME AND FREQUENCY ACTIVITIES AT THE CSIR NATIONAL METROLOGY LABORATORY
TIME AND FREQUENCY ACTIVITIES AT THE CSIR NATIONAL METROLOGY LABORATORY E. L. Marais and B. Theron CSIR National Metrology Laboratory PO Box 395, Pretoria, 0001, South Africa Tel: +27 12 841 3013; Fax:
More informationNational time scale UTC(SU) and GLONASS system time scale: current status and perspectives
State Scientific Center of the Russian Federation National Research Institute for Physical-Technical and Radio Engineering Measurements National time scale UTC(SU) and GLONASS system time scale: current
More informationA PC-BASED TIME INTERVAL COUNTER WITH 200 PS RESOLUTION
A PC-BASED TIME INTERVAL COUNTER WITH 200 PS RESOLUTION Józef Kalisz and Ryszard Szplet Military University of Technology Kaliskiego 2, 00-908 Warsaw, Poland Tel: +48 22 6839016; Fax: +48 22 6839038 E-mail:
More informationGMES 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 informationOptical Digital Transmission Systems. Xavier Fernando ADROIT Lab Ryerson University
Optical Digital Transmission Systems Xavier Fernando ADROIT Lab Ryerson University Overview In this section we cover point-to-point digital transmission link design issues (Ch8): Link power budget calculations
More informationStatus of Aqua MODIS Reflective Solar Bands Calibration and Performance
EOS Status of Aqua MODIS Reflective Solar Bands Calibration and Performance Jack Xiong NASA GSFC, Greenbelt, MD 20771, USA A. Angal, H. Chen, X. Geng, D. Link, Y. Li, and A. Wu SSAI, 10210 Greenbelt Road,
More informationAN INTRODUCTION TO MICROCARB, FIRST EUROPEAN PROGRAM FOR CO2 MONITORING.
AN INTRODUCTION TO MICROCARB, FIRST EUROPEAN PROGRAM FOR CO2 MONITORING. International Working Group on Green house Gazes Monitoring from Space IWGGMS-12 Francois BUISSON CNES With Didier PRADINES, Veronique
More informationBaumanets student micro-satellite
Baumanets student micro-satellite Presentation at UNIVERSAT 2006 International Symposium June 28, 2006 Moscow, Russia Victoria Mayorova Director of Youth Space Center of Bauman Moscow State Technical University
More informationCalibration Concepts for Future Low Frequency SAR Systems. Jens Reimann, Marco Schwerdt, Sravan Kumar Aitha and Manfred Zink
Calibration Concepts for Future Low Frequency SAR Systems Jens Reimann, Marco Schwerdt, Sravan Kumar Aitha and Manfred Zink DLR.de Chart 2 Low Frequency SAR Missions OHB DLR.de Chart 3 BIOMASS - Facts
More informationAbout compliance of GLONASS S/C retroreflectors system with the requirements of International Laser Ranging Service standard
FEDERAL SPACE AGENCY FGUP «Science-Research Institute for Precise Instrument Engineering» About compliance of GLONASS S/C retroreflectors system with the requirements of International Laser Ranging Service
More informationTime and Frequency Activities at KRISS
Time and Frequency Activities at KRISS Dai-Hyuk Yu Center for Time and Frequency Metrology, Division of Physical Metrology Korea Research Institute of Standards and Science (KRISS) dhyu@kriss.re.kr Time
More informationStatus of Aeolus ESA s Wind Lidar Mission
Status of Aeolus ESA s Wind Lidar Mission Roland Meynart, Anders Elfving, Denny Wernham and Anne Grete Straume European Space Agency/ESTEC Coherent Laser Radar Conference, Boulder 26 June-01 July 2016
More informationClock Synchronization of Pseudolite Using Time Transfer Technique Based on GPS Code Measurement
, pp.35-40 http://dx.doi.org/10.14257/ijseia.2014.8.4.04 Clock Synchronization of Pseudolite Using Time Transfer Technique Based on GPS Code Measurement Soyoung Hwang and Donghui Yu* Department of Multimedia
More informationReference Distribution
EPAC 08, Genoa, Italy RF Reference Signal Distribution System for FAIR M. Bousonville, GSI, Darmstadt, Germany P. Meissner, Technical University Darmstadt, Germany Dipl.-Ing. Michael Bousonville Page 1
More informationEffects of magnetic storms on GPS signals
Effects of magnetic storms on GPS signals Andreja Sušnik Supervisor: doc.dr. Biagio Forte Outline 1. Background - GPS system - Ionosphere 2. Ionospheric Scintillations 3. Experimental data 4. Conclusions
More information1. COMMUNICATION 10. COMMUNICATION SYSTEMS GIST The sending and receiving of message from one place to another is called communication. Two important forms of communication systems are (i) Analog and (ii)
More informationThe CHOMPTT Precision Time Transfer CubeSat Mission
The CHOMPTT Precision Time Transfer CubeSat Mission John W. Conklin*, Paul Serra, Nathan Barnwell, Seth Nydam, Maria Carrascilla, Leopoldo Caro, Norman Fitz-Coy *jwconklin@ufl.edu Background and Motivation
More informationFundamentals of GPS Navigation
Fundamentals of GPS Navigation Kiril Alexiev 1 /76 2 /76 At the traditional January media briefing in Paris (January 18, 2017), European Space Agency (ESA) General Director Jan Woerner explained the knowns
More informationGPS (Introduction) References. Terms
GPS (Introduction) MSE, Rumc, GPS, 1 Terms NAVSTAR GPS ( Navigational Satellite Timing and Ranging - Global Positioning System) is a GNSS (Global Navigation Satellite System), developed by the US-DoD in
More informationFuture Concepts for Galileo SAR & Ground Segment. Executive summary
Future Concepts for Galileo SAR & Ground Segment TABLE OF CONTENT GALILEO CONTRIBUTION TO THE COSPAS/SARSAT MEOSAR SYSTEM... 3 OBJECTIVES OF THE STUDY... 3 ADDED VALUE OF SAR PROCESSING ON-BOARD G2G SATELLITES...
More informationActivity report from NICT
Activity report from NICT APMP 2013 / TCTF meeting 25-26 November, 2013 National Institute of Information and Communications Technology (NICT) Japan 1 1 Activities of our laboratory Atomic Frequency Standards
More informationLecture 9: Raman lidar
Lecture 9: Raman lidar Water vapor mixing ratio measured by the SRL during the dryline event. Temporal resolution is 3 minutes, vertical smoothing varied between 90 meters at 0.5 km to 330 meters
More informationECEN689: Special Topics in Optical Interconnects Circuits and Systems Spring 2016
ECEN689: Special Topics in Optical Interconnects Circuits and Systems Spring 016 Lecture 7: Transmitter Analysis Sam Palermo Analog & Mixed-Signal Center Texas A&M University Optical Modulation Techniques
More informationCALIBRATING GNSS SATELLITE ANTENNA GROUP-DELAY VARIATIONS USING SPACE AND GROUND RECEIVERS
IGS WORKSHOP 2014 CALIBRATING GNSS SATELLITE ANTENNA GROUP-DELAY VARIATIONS USING SPACE AND GROUND RECEIVERS June 23-27, 2014 - PASADENA, CALIFORNIA Plenary PY06: Infrastructure and Calibration David CALLE
More informationRECOMMENDATION ITU-R SA.1624 *
Rec. ITU-R SA.1624 1 RECOMMENDATION ITU-R SA.1624 * Sharing between the Earth exploration-satellite (passive) and airborne altimeters in the aeronautical radionavigation service in the band 4 200-4 400
More informationRelative Navigation, Timing & Data. Communications for CubeSat Clusters. Nestor Voronka, Tyrel Newton
Relative Navigation, Timing & Data Communications for CubeSat Clusters Nestor Voronka, Tyrel Newton Tethers Unlimited, Inc. 11711 N. Creek Pkwy S., Suite D113 Bothell, WA 98011 425-486-0100x678 voronka@tethers.com
More informationOverview of the Small Optical TrAnsponder (SOTA) Project
Overview of the Small Optical TrAnsponder (SOTA) Project Space Communications Laboratory Wireless Networks Research Center National Institute of Information and Communications Technology (NICT) Satellite
More informationMeteosat Third Generation (MTG) Lightning Imager (LI) instrument on-ground and in-flight calibration
Meteosat Third Generation (MTG) Lightning Imager (LI) instrument on-ground and in-flight calibration Marcel Dobber, Stephan Kox EUMETSAT (Darmstadt, Germany) 1 Contents of this presentation Meteosat Third
More informationtaccor Optional features Overview Turn-key GHz femtosecond laser
taccor Turn-key GHz femtosecond laser Self-locking and maintaining Stable and robust True hands off turn-key system Wavelength tunable Integrated pump laser Overview The taccor is a unique turn-key femtosecond
More informationEVLA Memo 105. Phase coherence of the EVLA radio telescope
EVLA Memo 105 Phase coherence of the EVLA radio telescope Steven Durand, James Jackson, and Keith Morris National Radio Astronomy Observatory, 1003 Lopezville Road, Socorro, NM, USA 87801 ABSTRACT The
More informationInterferometric Cartwheel 1
The Interferometric CartWheel A wheel of passive radar microsatellites for upgrading existing SAR projects D. Massonnet, P. Ultré-Guérard (DPI/EOT) E. Thouvenot (DTS/AE/INS/IR) Interferometric Cartwheel
More informationA transportable optical frequency comb based on a mode-locked fibre laser
A transportable optical frequency comb based on a mode-locked fibre laser B. R. Walton, H. S. Margolis, V. Tsatourian and P. Gill National Physical Laboratory Joint meeting for Time and Frequency Club
More informationGPS (Introduction) References. Terms
GPS (Introduction) WCOM2, GPS, 1 Terms NAVSTAR GPS ( Navigational Satellite Timing and Ranging - Global Positioning System) is a GNSS (Global Navigation Satellite System), developed by the US-DoD in 197x
More informationSatellite/Aircraft Imaging Systems Imaging Sensors Standard scanner designs Image data formats
CEE 6150: Digital Image Processing 1 Satellite/Aircraft Imaging Systems Imaging Sensors Standard scanner designs Image data formats CEE 6150: Digital Image Processing 2 CEE 6150: Digital Image Processing
More informationNew precise timing solutions and their application in JUNO project Jauni precīzā laika risinājumi un to izmantošana JUNO projektā
New precise timing solutions and their application in JUNO project Jauni precīzā laika risinājumi un to izmantošana JUNO projektā Vadim Vedin Institute of Electronics and Computer Science Riga, Latvia
More informationPrinciples of Global Positioning Systems Spring 2008
MIT OpenCourseWare http://ocw.mit.edu 12.540 Principles of Global Positioning Systems Spring 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms. 12.540
More informationMiguel A. Aguirre. Introduction to Space. Systems. Design and Synthesis. ) Springer
Miguel A. Aguirre Introduction to Space Systems Design and Synthesis ) Springer Contents Foreword Acknowledgments v vii 1 Introduction 1 1.1. Aim of the book 2 1.2. Roles in the architecture definition
More informationNASA MOBLAS 4. Goddard Space Flight Center Greenbelt, MD
Annual HPWREN Users Meeting NASA MOBLAS 4 Goddard Space Flight Center Greenbelt, MD November 19, 2008 Howard Donovan Engineering and Operations Manager Ron Sebeny MOBLAS 4 Acting Station Manager NASA Satellite
More informationESA Radar Remote Sensing Course ESA Radar Remote Sensing Course Radar, SAR, InSAR; a first introduction
Radar, SAR, InSAR; a first introduction Ramon Hanssen Delft University of Technology The Netherlands r.f.hanssen@tudelft.nl Charles University in Prague Contents Radar background and fundamentals Imaging
More informationSAOCOM-CS Mission and ESA Airborne Campaign Data
SAOCOM-CS Mission and ESA Airborne Campaign Data Malcolm Davidson Head of the EOP Campaign Section Malcolm.Davidson@esa.int Objectives of presentation Introduce a new type of ESA SAR mission with Polarimetrice,
More informationGPS: The Basics. Darrell R. Dean, Jr. Civil and Environmental Engineering West Virginia University. Expected Learning Outcomes for GPS
GPS: The Basics Darrell R. Dean, Jr. Civil and Environmental Engineering West Virginia University Expected Learning Outcomes for GPS Explain the acronym GPS Name 3 important tdt dates in history of GPS
More informationClock Comparisons: Present and Future Approaches
Clock Comparisons: Present and Future Approaches Introduction I. Dissemination of Legal Time II. Comparisons of Time Scales III. Comparisons of Primary Clocks MicrowaveTime & Frequency Comparisons GPS
More informationLecture 03. Lidar Remote Sensing Overview (1)
Lecture 03. Lidar Remote Sensing Overview (1) Introduction History from searchlight to modern lidar Various modern lidars Altitude/Range determination Basic lidar architecture Summary Introduction: Lidar
More informationA CubeSat-Based Optical Communication Network for Low Earth Orbit
A CubeSat-Based Optical Communication Network for Low Earth Orbit Richard Welle, Alexander Utter, Todd Rose, Jerry Fuller, Kristin Gates, Benjamin Oakes, and Siegfried Janson The Aerospace Corporation
More informationRADIATION BUDGET INSTRUMENT (RBI): FINAL DESIGN AND INITIAL EDU TEST RESULTS
Place image here (10 x 3.5 ) RADIATION BUDGET INSTRUMENT (RBI): FINAL DESIGN AND INITIAL EDU TEST RESULTS RONALD GLUMB, JAY OVERBECK, CHRISTOPHER LIETZKE, JOHN FORSYTHE, ALAN BELL, AND JASON MILLER NON-EXPORT
More informationAdvanced Ranging. and. Time & Frequency Transfer Techniques. for LISA. Noordwijk, The Netherlands, Jul 2004
Advanced Ranging and Time & Frequency Transfer Techniques for LISA Noordwijk, The Netherlands, 12 15 Jul 2004 Page 1 of 47 Wolfgang Schäfer TimeTech GmbH Phone: 0049-711-678 08-0 Curiestrasse 2 Fax: 0049-711-678
More informationGPS Global Positioning System
GPS Global Positioning System 10.04.2012 1 Agenda What is GPS? Basic consept History GPS receivers How they work Comunication Message format Satellite frequencies Sources of GPS signal errors 10.04.2012
More informationCURRENT ACTIVITIES OF THE NATIONAL STANDARD TIME AND FREQUENCY LABORATORY OF THE TELECOMMUNICATION LABORATORIES, CHT TELECOM CO., LTD.
CURRENT ACTIVITIES OF THE NATIONAL STANDARD TIME AND FREQUENCY LABORATORY OF THE TELECOMMUNICATION LABORATORIES, CHT TELECOM CO., LTD., TAIWAN C. S. Liao, P. C. Chang, and S. S. Chen National Standard
More informationSynchronization of distant Laser stations thanks to Time Transfer by Laser Link : Proposal for a dedicated campaign
Synchronization of distant Laser stations thanks to Time Transfer by Laser Link : Proposal for a dedicated campaign A. Belli 1,2, P. Exertier 1, E. Samain 1, C. Courde 1, J.M. Torre 1, F. Vernotte 2 1
More informationCO 2 Remote Detection Using a 2-µm DIAL Instrument
CO 2 Remote Detection Using a 2-µm DIAL Instrument Erwan Cadiou 1,2, Dominique Mammez 1,2, Jean-Baptiste Dherbecourt 1,, Guillaume Gorju 1, Myriam Raybaut 1, Jean-Michel Melkonian 1, Antoine Godard 1,
More informationOPAL Optical Profiling of the Atmospheric Limb
OPAL Optical Profiling of the Atmospheric Limb Alan Marchant Chad Fish Erik Stromberg Charles Swenson Jim Peterson OPAL STEADE Mission Storm Time Energy & Dynamics Explorers NASA Mission of Opportunity
More informationA CubeSat Radio Beacon Experiment
A CubeSat Radio Beacon Experiment CUBEACON A Beacon Test of Designs for the Future Antenna? Michael Cousins SRI International Multifrequency? Size, Weight and Power? CubeSat Developers Workshop, April
More informationIASI on METOP On-Ground Calibration of the FM2 Instrument
Infrared Atmospheric Sounding Interferometer IASI on METOP On-Ground Calibration of the FM2 Instrument International TOVS Study Conference 25-31, May 2005 Beijing China D. Blumstein 1,B.Tournier 2, T.Carlier
More informationGFZ Potsdam contributions to ELT
Aces workshop, Zürich, Switzerland, 29th 30th June 2017. GFZ Potsdam contributions to ELT S. Bauer 1, L. Grunwaldt 1, E.D. Hoffman 2 1 GFZ Potsdam, Brandenburg, Germany. 2 NASA GSFC, Greenbelt, Maryland,
More information