Satellite Payloads for Optical Telecommunications
|
|
- Archibald Robinson
- 5 years ago
- Views:
Transcription
1 SpaceOps 2006 Conference AIAA Satellite Payloads for Optical Telecommunications Valeria Catalano *, Lamberto Zuliani Agenzia Spaziale Italiana Viale Liegi 26, Roma, 00198, Italy E b /N 0 G/T The increasing demand of bandwidth for satellite communication applications forces the scientific community to explore higher and higher frequency ranges. Whereas frequency range availability is being solved from a regulatory point of view, new technologies are required to enable broadband services and applications in high frequency bands. Nomenclature = energy per bit to spectral noise density ratio = antenna gain-to-noise-temperature I. Introduction Starting from the heritage acquired through the SIRIO program in S-band (2), ITALSAT F1 and F2 missions in Ka and Q/V bands (3), and the DAVID (Data and Video Interactive Distribution) scientific mission in the W-band (4), the Italian Space Agency (ASI) identified three advanced technology projects for broadband satellite telecommunications respectively at Q/V, W and Optical bands. This paper describes the main technological developments required to perform the identified Optical Telecommunication missions. II. Optical Telecommunication Optical Telecommunications (OT) technologies will play a fundamental role in future applications, as shown by many international programs in this field. ASI started to make investments in optical research since many years, and a telescope, located at its Operative Center in Matera Italy, is already used for Lunar laser ranging. In 2004 ASI financed a feasibility study for an Optical Band Telecommunication Payload. The study examined different missions in which the optical payload could be used, i.e. LEO to Ground, LEO to LEO, LEO to UAV, MEO to LEO, GEO to LEO, GEO to GEO, GEO to Ground, and Interplanetary mission. All the missions have been analyzed in order to meet a set of major spacecraft requirements, reported in figure 1, like the transmitting wavelength (1550 nm), the uplink and downlink data rates (up to 2.5Gbits), and the Bit Error Rate (10-9 ). During the link budget evaluations a particular emphasis has been given on several phenomena that affect the light propagation through the atmosphere. A laser beam propagating through the atmosphere can quickly lose useful energy due to molecular scattering, molecular absorption, and particulate scattering. Refractive turbulence may also contribute to energy loss, however, mainly degrading the beam quality, both by distorting the phase front and by randomly modulating the signal power. The presence of opaque clouds may occlude the signal completely rendering the time-of-sight communication link useless. The problems described above are quite distinct from each other, and the difficulties presented by each of these obstacles were examined independently, in order to determine the minimum antenna diameter necessary to obtain 2.5 Gbps of minimum data rate and assuming a BER=10-9. The results are summarized in Fig. 2. * Telecommunication and Navigation Technology Department, Agenzia Spaziale Italiana Head of the Telecommunication and Navigation Technology Department, Agenzia Spaziale Italiana 1 Copyright 2006 by the, Inc. All rights reserved.
2 Spacecraft requirements: The attitude accuracy in roll, pitch and yaw: The uncertainty of the angular velocity: PAT requirements Point Ahead Angle (LEO missions) Point Ahead Angle (GEO missions) Point Ahead Angle (GEO to GEO missions) Orbit Determination (LEO missions) Orbit Determination (GEO missions) Optical requirements: Telescope Terminal Telescope wavelength (Tx and Rx section): Beam divergence Tx: Tx mode coupling: Rx mode coupling: Optical Transceiver: Power Rx demodulator: Power Tx modulator: ±0.15 (±2.6 mrad) to ±0.2 (±3.5 mrad) each TBC ± (±100 µrad/s) to ±0.02 /s (±350 µrad/s) each TBC ~ 50 µrad ~ 72 µrad ~ 0.5 µrad ~ 2.0 mrad ~ 48 µrad single telescope terminal shared between Tx and Rx sections 1550 nm 100 µrad single mode coupling single/multi mode Optical Transceiver Rx demodulator always ON Optical Transceiver Tx Modulator ON/OFF capability Tx uplink data rate Rx downlink data rate: modulation type optical NRZ-L Receiver section technology: APD or PIN detector BER 10-9 with a minimum sensistivity of 35 dbm OBDH requirements: MMU MMU transfer data rate FEC: Figure 1. Optical payload general requirements at least 100 Gbits RS+Viterbi hardware implementation at 2.5 Gbps Mission Transceiver Telescope Ground segment LEO (all missions) multi mode Rx multi mode Equivalent optical Telescope mm single mode Tx (0.1 W) LEO (all missions) single mode Rx single mode Equivalent optical Telescope mm single mode Tx (0.1 W) GEO (all missions) single mode Rx + Opt Ampl single mode Tx + booster (1 W) single mode Equivalent optical Telescope mm Figure 2. Summary of the optical link budget results The functional architecture of the optical payload is sketched in Fig. 3. It is subdivided in two sub-blocks: the Remote Unit, which is the electronic part of control and modulation/demodulation of the optical signals, and the Optical Head mainly composed by the telescope, the Optical bench, and the Pointing Attitude and Tracking (PAT) System. The Telescope, the beacon and its relative optical bench constitute the main optical equipment mounted inside the payload. The main goal is to focus the optical source during the transmission toward the external optical terminal and, vice versa, to focus the incoming external optical source into the receiving area sensor. The PAT system keeps the optical head aligned with the line of sight between the satellite and the external optical terminal by monitoring the received beacon signal. The actuation can be performed at different stages: a coarse pointing system (e.g., by means of gimbals), a fine pointing system, (e.g., by means of a fast steering mirror), a fiber alignment system (e.g., by fast fiber nutation). The Optical Transceiver provides the capability for acquiring telemetry from the spacecraft and translates it optically. It acts as the electrical-optical interface inside the optical payload. It includes all elements for reception, demodulation, modulation and transmission. Its fundamental functions shall be receiving and demodulating the uplink signals in the Optical Band for telecommand purposes, and modulating and transmitting the downlink 2
3 LOW-END TERMINAL REMOTE UNIT OPTICAL HEAD Receiver electronics Receiver transceiver Amplifier for reception Optical bench Telescope and beacon Transmitter electronics Transmitter transceiver Amplifier for transmitter PAT sensor PAT mechanism Power Supply On-Board Processing Unit Figure 3 - Optical payload functional architecture Thermal control HW telemetry data signals in the optical band. The On Board Processing Unit of the Optical Payload supervises electronically the Optical Payload and manages the control communication with the Spacecraft. In particular the On Board Data Handling (OBDH) is related to the mechanism and sensor control electronics and implements the PAT control electronic law. Finally, the decoding and encoding of receiving and transmitting data is performed internally the On Board Processing Unit. During the encoding and decoding phase it is possible, in accordance with the mission requirements, to adopt particular error recovery coding to improve the overall reliability of the optical transmission. On the basis of the requirements and the results of the link budgets reported in Fig. 1 and Fig. 2, different payload configurations were considered (Fig. 4). It is straightforward to see that different mission require similar payload configurations thus reducing the payload analysis only to three different mission typologies (with increasing stringent requirements): (a) LEO to Ground (missions 1 4), (b) GEO to Ground (missions 5 9), (c) Deep Space to GEO (mission 10) and consequently GEO to Ground. The Pointing Attitude and Tracking (PAT) System requires the implementation of a Coarse Pointing Assembly (CPA), a Pointing Ahead Angle (PAA), Fine Pointing Assembly (FPA), and an Acquisition Sensor (AS) for the (a) mission typology. A Tracking Sensor (TS) for faster tracking within a small area is required for mission typologies (b) and (c). The Rx optical transceiver also presents different requirements depending on the mission typology. While for mission typology (a) single and multi mode communications can be foreseen by means of an avalanche photodiode detector (APD), single mode was investigated for long distance communications mission typologies (b) and (c) by means of both APD and p-type-intrinsic-n-type (PIN) detectors. Erbium doped fiber amplifiers (EDFA) need to be employed for mission typology (c) as well as in the Tx optical transceiver when an excessive gain loss forces to boost the intensity of optical signals. The Mass Memory Unit (MMU) is another critical part of the payload. The high data rate achievable with optical communications () needs a storage unit of large capacity whose reliability is increasingly affected by radiations with respect to larger capacities. Finally Forward Error Correction (FEC) algorithms should be hardware-implemented in order to provide fast responses with respect to the considered bit rate. 3
4 N. MISSIONS PAT Configurations OPTICAL TRANSCEIVER OPTICAL TRANSCEIVER MMU FEC RX TX RS+Viterbi 1 LEO to Ground CPA PAA FPA TS AS 1) multi and APD detector 100 mw Gbits Sw 2 LEO to Ground CPA PAA FPA TS AS 1) multi and APD detector 100 mw Gbits Hw 3 LEO to LEO CPA PAA FPA TS AS 1) multi and APD detector 100 mw Gbits Hw 4 LEO to UAV CPA PAA FPA TS AS 1) multi and APD detector 100 mw Gbits Hw 2)single and APD detector 100 mw 100 Gbits Hw 5 MEO to LEO CPA PAA FPA TS AS TS 1) single APD EDFA 1 W >100 Gbits Hw 6 GEO to LEO CPA PAA FPA TS AS TS 1) single APD EDFA 1 W >100 Gbits Hw 7 GEO to GEO CPA n/a FPA TS AS TS 1) single APD EDFA 1 W >100 Gbits Hw 8 GEO to Ground CPA n/a FPA TS AS TS 1) single APD EDFA 1 W >100 Gbits Hw 9 ISL CPA n/a FPA TS AS TS single PIN EDFA 1 W >100 Gbits Hw 10 Interpl Mission CPA PAA FPA TS AS TS single PIN + EDFA EDFA 30 W >100 Gbits Hw Figure 4. Optical Payload possible configurations The differences in the three mission typologies inspire the evolution plan that ASI is currently pursuing. The LEO to Ground mission typology represents a prototype mission that can be based on a Commercial Optical Transceiver. Since the PAT and the coupling between telescope and optical transceiver (single or multi mode) appear as the most technical demanding points, it should be necessary to realize a simplified ground prototype to validate the PAT control law and to test the coupling between the telescope and the optical transceiver. The same architecture (single mode coupling) used during the LEO mission, but improved with the EDFA booster in transmission, can be updated and enhanced to be used in the GEO to Ground mission in a subsequent phase. The last and future step will be the updating of the optical payload used and tested during the GEO to Ground mission for an Interplanetary mission. In the last months of 2005 ASI financed a phase A2 study for the analysis of optical links from a Stratospheric Aircraft to Ground and from a Stratospheric Aircraft to LEO, including the International Space Station. The first step of phase A2 will be to consolidate the mission scenarios and the analysis of Ground Station. The possibility of utilizing Matera ground station will be validated before the definition of the stratospheric mission. The second step will be to perform the preliminary design for the Optical Telecommunication Payload. In this phase, the accommodation on the M55 stratospheric aircraft, in particular the interface M55 aircraft OTP, will be also designed. The ISS stratospheric aircraft link will be also analyzed and all the opportunities on board (the Columbus External Payload Facility, EXPRESS Pallet or Japanese Experiment Module Exposed Facility) will be evaluated. The interior accommodation in Nadir Research Window will be also considered. During the preliminary design phases of the stratospheric mission it is foreseen to perform the final selection of the critical technology to be verified during the prototyping phase. The prototype will be designed, manufactured, integrated and tested. It will include the predevelopment of the following parts: Optical Transceiver: it will generate the optical signal starting from and electrical signal; Telescope and relative pointing mechanism: the telescope transmits light generated by the optical transceiver and/or collects light coming from the other terminal and focalizes the laser beam into the optical fibers. It will be installed on a pointing mechanism able to mechanically sustain it and to move it in order to reach the correct pointing; 4
5 Pointing mechanism drivers and control logic: the pointing mechanism is controlled by a motor driver and control SW that will implement the acquisition and pointing algorithm. After being integrated, the prototype will be tested in an indoor and open field campaign. The objective of this indoor demonstrator is to test the complete system integration and to perform the link experiment without atmospheric effect. An indoor optical free space link of approximately 200 meters length will be realized by using the sub-system supplied from the project partners. In the experimental indoor demonstration the parameters measured are: Optical transmitted and received power, Optical transmitted and received power spectrum, Bit Error Rate measurements versus received optical power and power budget measurements without atmospheric effect. The previous parameters will be measured in case of perfect telescope alignment and not, in order to simulate a little misalignment error. The objective of this open field demonstrator is to test the complete system integration and to perform the link experiment with atmospheric effect in order to emulate the Ground to aircraft link. The link length will be Km; the final distance value will be evaluated on the basis of the results of the optical link analysis and on the site availability. The same parameters analyzed in the indoor campaign will be measured in the open field. In this way it will be possible to correlate the obtained measurements in indoor and outdoor situations in order to have an experimental characterization of the atmospheric signal degradation. III. Conclusion We presented one of the projects that ASI is coordinating on advanced technologies for satellite broadband telecommunications. We described the general results obtained during the definition of an optical payload for which ASI is also planning international collaborations. Acknowledgments The authors would like to thank the Industries and Research Institutions for their precious contributions in the presented feasibility studies. Special thanks go to: Alcatel Alenia Space Italy, Prime Contractor of the Optical Band feasibility studies. References 1 G. Staple, K. Werbach, The end of spectrum scarcity, IEEE Spectrum, pp , March C. Capsoni, E. Matricciani, M. Mauri, SIRIO-OTS 12 GHz orbital diversity experiment at Fucino, IEEE Trans. On Antenna and Propagation, vol. 38, no. 6, pp , June A. Paraboni at al., The main results of the ITALSAT propagation experiment at 18.7, 39.6 and 49.5 GHz, 2 nd Ka-Band Utilization Conference, Florence, Sep C. Bonifazi, M. Ruggieri, A. Paraboni, The DAVID mission in the heritage of the SIRIO and ITALSAT satellites, IEEE Trans. On Aerospace and Electronic Systems, vol. 38, no. 4, pp , Oct P. Angeletti, G. Codispoti, A. Vernucci, L. Zuliani, Feasibility Study of Operational Satellite Systems Exploiting the Q-V Frequency Bands, 23rd AIAA Int. Communications Satellite Systems Conference (ICSSC-2005), Rome, Italy, September A. Vernucci, A DVB-S2 Modem Supporting Interactive Applications With Adaptive Coding and Modulation, 23rd AIAA Int. Communications Satellite Systems Conference (ICSSC-2005), Rome, Italy, September A. Jebril, M. Lucente, M. Ruggieri, T. Rossi, WAVE- A new satellite mission in W-Band, IEEE Aerospace Conference, 5-12 March 2005, Big Sky, MT, C. Sacchi, M. Musso, G. Gera, C. Ragazzoni, F. G.B. De Natale, A. Jebril, M. Ruggieri, An efficient carrier recovery scheme for high-bit-rate W-Band satellite communication systems, 5-12 March 2005, Big Sky, MT, A. Bosisio, A. Jebril, M. Lucente, M. Ruggieri, P. Cambriani, T. Rossi, A. Pisano, A. Salomé, L. Ronzitti, M. Musso, S. Pulitane, V. Dainelli, S. Morosi, V. Speziale, The WAVE mission payload, 5-12 March 2005, Big Sky, MT,
W-Band Satellite Transmission in the WAVE Mission
W-Band Satellite Transmission in the WAVE Mission A. Jebril, M. Lucente, M. Ruggieri, T. Rossi University of Rome-Tor Vergata, Dept. of Electronic Engineering, Via del Politecnico 1, 00133 Rome - Italy
More informationDLR s Optical Communications Program for 2018 and beyond. Dr. Sandro Scalise Institute of Communications and Navigation
DLR.de Chart 1 DLR s Optical Communications Program for 2018 and beyond Dr. Sandro Scalise Institute of Communications and Navigation DLR.de Chart 3 Relevant Scenarios Unidirectional Links Main application
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 informationApplication of an optical data link on DLR s BIROS satellite
www.dlr.de Chart 1 > OSIRIS @ SpaceOps > C. Fuchs > DLR Institute of Communications and Navigation Application of an optical data link on DLR s BIROS satellite Martin Brechtelsbauer, Christopher Schmidt,
More informationbetween in the Multi-Gigabit Regime
International Workshop on Aerial & Space Platforms: Research, Applications, Vision IEEE Globecom 2008, New Orleans, LA, USA 04. December 2008 Optical Backhaul Links between HAPs and Satellites in the Multi-Gigabit
More informationRECOMMENDATION ITU-R S Technical and operational characteristics of satellites operating in the range THz
Rec. ITU-R S.1590 1 RECOMMENDATION ITU-R S.1590 Technical and operational characteristics of satellites operating in the range 0-375 THz (Question ITU-R 64/4) (00) The ITU Radiocommunication Assembly,
More informationThe first videoconference at Q/V Band: a new era of the satellite telecommunication history
COPUOS Scientific and Technical Subcommittee Fifty-second session The first videoconference at Q/V Band: a new era of the satellite telecommunication history Giuseppe Codispoti Italian Space Agency giuseppe.codispoti@asi.it
More informationStatus of Telecommunication in W- band and possible applications: satellite broadband connection and networks of mobile phones
Status of Telecommunication in W- band and possible applications: satellite broadband connection and networks of mobile phones ARES & CTIF, Interdepartmental Center for TeleInfrastructure, University of
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 informationInvestigation of different configurations of amplifiers for inter satellite optical wireless transmission
Investigation of different configurations of amplifiers for inter satellite optical wireless transmission 1 Avinash Singh, 2 Amandeep Kaur Dhaliwal 1 Student, 2 Assistant Professor Electronics and communication
More informationOPTEL-µ : Flight Design and Status of EQM Development
OPTEL-µ : Flight Design and Status of EQM Development Elisabetta Rugi Grond General Manager OEI Opto AG ICSO-2016, 20 th Oct. 2016 Presentation Outline System Overview OPTEL-µ Space Terminal: Block Diagram
More informationNanosatellite Lasercom System. Rachel Morgan Massachusetts Institute of Technology 77 Massachusetts Avenue
SSC17-VIII-1 Nanosatellite Lasercom System Rachel Morgan Massachusetts Institute of Technology 77 Massachusetts Avenue remorgan@mit.edu Faculty Advisor: Kerri Cahoy Massachusetts Institute of Technology
More informationOptical Free-Space Communication on Earth and in Space regarding Quantum Cryptography Aspects
Optical Free-Space Communication on Earth and in Space regarding Quantum Cryptography Aspects Christian Fuchs, Dr. Dirk Giggenbach German Aerospace Center (DLR) {christian.fuchs,dirk.giggenbach}@dlr.de
More informationPerformance Evaluation of Intensity Modulation for Satellite laser Communication
International Journal of Engineering Research and Technology. ISSN 0974-3154 Volume 11, Number 12 (2018), pp. 2199-2204 International Research Publication House http://www.irphouse.com Performance Evaluation
More informationHigh Speed Data Downlink for NSF Space Weather CubeSats
High Speed Data Downlink for NSF Space Weather CubeSats National Science Foundation Meeting Monday August 31, 2009 Charles Swenson Satellite Data Flow Onboard Instruments R collected Spacecraft Memory
More informationDon M Boroson MIT Lincoln Laboratory. 28 August MIT Lincoln Laboratory
Free-Space Optical Communication Don M Boroson 28 August 2012 Overview-1 This work is sponsored by National Aeronautics and Space Administration under Air Force Contract #FA8721-05-C-0002. Opinions, interpretations,
More information5 Optical Communication Technologies
5 Optical Communication Technologies 5-1 Study on Laser Communications Demonstration Equipment at the International Space Station ARIMOTO Yoshinori This paper summarizes CRL s efforts to perform a mission
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 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 informationDeep Space Communication The further you go, the harder it gets. D. Kanipe, Sept. 2013
Deep Space Communication The further you go, the harder it gets D. Kanipe, Sept. 2013 Deep Space Communication Introduction Obstacles: enormous distances, S/C mass and power limits International Telecommunications
More informationDRONACHARYA GROUP OF INSTITUTIONS, GREATER NOIDA. SATELLITE COMMUNICATIONS (EEC 021) QUESTION BANK
DRONACHARYA GROUP OF INSTITUTIONS, GREATER NOIDA. SATELLITE COMMUNICATIONS (EEC 021) QUESTION BANK 1. Write the advantages and disadvantages of Satellite Communication. 2. Distinguish between active and
More informationUltra High Capacity Wavelength Division Multiplexed Optical Wireless Communication System
Ultra High Capacity Wavelength Division Multiplexed Optical Wireless Communication System 1 Meenakshi, 2 Gurinder Singh 1 Student, 2 Assistant Professor 1 Electronics and communication, 1 Ludhiana College
More informationSpatially Resolved Backscatter Ceilometer
Spatially Resolved Backscatter Ceilometer Design Team Hiba Fareed, Nicholas Paradiso, Evan Perillo, Michael Tahan Design Advisor Prof. Gregory Kowalski Sponsor, Spectral Sciences Inc. Steve Richstmeier,
More informationStatus of Free-Space Optical Communications Program at JPL
Status of Free-Space Optical Communications Program at JPL H. Hemmati Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Dr., Pasadena, CA 91 109, M/S 161-135 Phone #: 8 18-354-4960
More informationFree Space Optical Communication System under Different Weather Conditions
IOSR Journal of Engineering (IOSRJEN) e-issn: 2250-3021, p-issn: 2278-8719 Vol. 3, Issue 12 (December. 2013), V2 PP 52-58 Free Space Optical Communication System under Different Weather Conditions Ashish
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 informationFigure 1. Proposed Mission Operations Functions. Key Performance Parameters Success criteria of an amateur communicator on board of Moon-exploration
Title: CubeSat amateur laser communicator with Earth to Moon orbit data link capability Primary Point of Contact (POC) & email: oregu.nijuniku@jaxa.jp Co-authors: Oleg Nizhnik Organization: JAXA Need Available
More informationComparison in Behavior of FSO System under Clear Weather and FOG Conditions
Comparison in Behavior of FSO System under Clear Weather and FOG Conditions Mohammad Yawar Wani, Prof.(Dr).Karamjit Kaur, Ved Prakash 1 Student,M.Tech. ECE, ASET, Amity University Haryana 2 Professor,
More informationAn insight in the evolution of GEO satellite technologies for broadband services
An insight in the evolution of GEO satellite technologies for broadband services EUROPEAN SATELLITE INDUSTRY ROADMAP MARCH 14 TH, BRUSSELS Future broadband technologies 1/2 2 The need for informing the
More informationGigabit Transmission in 60-GHz-Band Using Optical Frequency Up-Conversion by Semiconductor Optical Amplifier and Photodiode Configuration
22 Gigabit Transmission in 60-GHz-Band Using Optical Frequency Up-Conversion by Semiconductor Optical Amplifier and Photodiode Configuration Jun-Hyuk Seo, and Woo-Young Choi Department of Electrical and
More informationPerformance Analysis of WDM-FSO Link under Turbulence Channel
Available online at www.worldscientificnews.com WSN 50 (2016) 160-173 EISSN 2392-2192 Performance Analysis of WDM-FSO Link under Turbulence Channel Mazin Ali A. Ali Department of Physics, College of Science,
More informationOptical Transport Tutorial
Optical Transport Tutorial 4 February 2015 2015 OpticalCloudInfra Proprietary 1 Content Optical Transport Basics Assessment of Optical Communication Quality Bit Error Rate and Q Factor Wavelength Division
More informationDevelopment of a pointing, acquisition, and tracking system for a CubeSat optical communication module
Development of a pointing, acquisition, and tracking system for a CubeSat optical communication module The MIT Faculty has made this article openly available. Please share how this access benefits you.
More informationIntersatellites Channel Emulator
Intersatellites Channel Emulator Technical Specifications The Intersatellites Channel Emulator is a very accurate Channel Emulator with RF (or low IF) input and RF (or low IF) output with an excess Bandwidth
More informationWireless Power Transmission of Solar Energy from Space to Earth Using Microwaves
Wireless Power Transmission of Solar Energy from Space to Earth Using Microwaves Raghu Amgothu Contract Lecturer in ECE Dept., Government polytechnic Warangal Abstract- In the previous stages, we are studying
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 informationThe DARPA 100Gb/s RF Backbone Program
The DARPA 100Gb/s RF Backbone Program Dr. Ted Woodward Program Manager, DARPA/STO Briefing Prepared for NSF mmw RCN workshop Madison, WI 19 July 2017 1 100 Gb/s RF Backbone (100G) Objective: Capacity AND
More informationSimulation of RoF Using Wavelength Selective OADM
International Journal of Research Studies in Science, Engineering and Technology Volume 2, Issue 9, September 2015, PP 16-22 ISSN 2349-4751 (Print) & ISSN 2349-476X (Online) Simulation of RoF Using Wavelength
More informationProject: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Title: Feasibility test of THz channel for high-speed wireless link Date Submitted: 12 Nov 2013 Source: Jae-Young Kim, Ho-Jin
More informationOverview of the inter-orbit and orbit-to-ground laser communication demonstration by OICETS
Overview of the inter-orbit and orbit-to-ground laser communication demonstration by OICETS Takashi Jono *a, Yoshihisa Takayama a, Koichi Shiratama b, Ichiro Mase b, Benoit Demelenne c, Zoran Sodnik d,
More information5G deployment below 6 GHz
5G deployment below 6 GHz Ubiquitous coverage for critical communication and massive IoT White Paper There has been much attention on the ability of new 5G radio to make use of high frequency spectrum,
More informationData and Computer Communications Chapter 4 Transmission Media
Data and Computer Communications Chapter 4 Transmission Media Ninth Edition by William Stallings Data and Computer Communications, Ninth Edition by William Stallings, (c) Pearson Education - Prentice Hall,
More informationSEVENTH FRAMEWORK PROGRAMME THEME [ICT ] [Photonics]
SEVENTH FRAMEWORK PROGRAMME THEME [ICT-2013.3.2] [Photonics] Software-defined energy-efficient Photonic transceivers IntRoducing Intelligence and dynamicity in Terabit superchannels for flexible optical
More informationPerformance Analysis of OFDM FSO System using ODSB, OSSB and OVSB modulation scheme by employing Spatial Diversity
1 IJEDR Volume 3, Issue 2 ISSN: 2321-9939 Performance Analysis of OFDM FSO System using, and modulation scheme by employing Spatial Diversity 1 Harjot Kaur Gill, 2 Balwinder Singh Dhaliwal, 3 Kuldeepak
More informationPerformance Analysis Of An Ultra High Capacity 1 Tbps DWDM-RoF System For Very Narrow Channel Spacing
Performance Analysis Of An Ultra High Capacity 1 Tbps DWDM-RoF System For Very Narrow Channel Spacing Viyoma Sarup* and Amit Gupta Chandigarh University Punjab, India *viyoma123@gmail.com Abstract A RoF
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 informationIntroduction. Laser Diodes. Chapter 12 Laser Communications
Chapter 1 Laser Communications A key technology to enabling small spacecraft missions is a lightweight means of communication. Laser based communications provides many benefits that make it attractive
More informationSST radar in Cheia
SST radar in Cheia 13.06.2018 Summary: About Space Alliance, Telespazio & RARTEL; Participation of RARTEL in ESA projects; Cheia antenna retrofit project 2 Telespazio in Romania: RARTEL SA RARTEL and the
More informationSatellite Technology for Future Applications
Satellite Technology for Future Applications WSRF Panel n 4 Dubai, 3 March 2010 Guy Perez VP Telecom Satellites Programs 1 Commercial in confidence / All rights reserved, 2010, Thales Alenia Space Content
More informationAnnex B: HEO Satellite Mission
Annex B: HEO Satellite Mission Table of Content TABLE OF CONTENT...I 1. INTRODUCTION...1 1.1. General... 1 1.2. Response Guidelines... 1 2. BRAODBAND CAPACITY...2 2.1. Mission Overview... 2 2.1.1. HEO
More information2009 CubeSat Developer s Workshop San Luis Obispo, CA
Exploiting Link Dynamics in LEO-to-Ground Communications 2009 CubeSat Developer s Workshop San Luis Obispo, CA Michael Caffrey mpc@lanl.gov Joseph Palmer jmp@lanl.gov Los Alamos National Laboratory Paper
More informationRF Basics 15/11/2013
27 RF Basics 15/11/2013 Basic Terminology 1/2 dbm is a measure of RF Power referred to 1 mw (0 dbm) 10mW(10dBm), 500 mw (27dBm) PER Packet Error Rate [%] percentage of the packets not successfully received
More informationSATELLITE LINK DESIGN
1 SATELLITE LINK DESIGN Networks and Communication Department Dr. Marwah Ahmed Outlines 2 Introduction Basic Transmission Theory System Noise Temperature and G/T Ratio Design of Downlinks Satellite Communication
More informationPERFORMANCE IMPROVEMENT OF INTERSATELLITE OPTICAL WIRELESS COMMUNICATION WITH MULTIPLE TRANSMITTER AND RECEIVERS
PERFORMANCE IMPROVEMENT OF INTERSATELLITE OPTICAL WIRELESS COMMUNICATION WITH MULTIPLE TRANSMITTER AND RECEIVERS Kuldeepak Singh*, Dr. Manjeet Singh** Student*, Professor** Abstract Multiple transmitters/receivers
More informationWide-Field-of-Regard Pointing, Acquisition and Tracking-System for small Laser Communication Terminals
Wide-Field-of-Regard Pointing, Acquisition and Tracking-System for small Laser Communication Terminals Christopher Schmidt Institute for Communication and Navigation German Aerospace Center (DLR) D-82234
More informationOperation Performance Evaluation of Intersatellite Optical Wireless Communication Systems in Low Earth Orbits
Operation Performance Evaluation of Intersatellite Optical Wireless Communication Systems in Low Earth Orbits Hamdy A. Sharsher 1, Eman Mohsen El-gammal 2 1,2 Electronics and Electrical Communications
More informationThe CubeSTAR Project. Design of a Prototype Communication System for the CubeSTAR Nano-satellite. Master presentation by Johan Tresvig 24th Aug.
Design of a Prototype Communication System for the CubeSTAR Nano-satellite Master presentation by Johan Tresvig 24th Aug. 2010 The CubeSTAR Project Student satellite project at the University of Oslo Scientific
More informationARTES 1 ROLLING WORKPLAN 2010
ARTES 1 ROLLING WORKPLAN 2010 INTRODUCTION This document presents the ARTES 1 Rolling Workplan for 2010. Activities have been selected based on the ARTES Call for Ideas, consultation with participating
More informationFrom SILEX/LOLA to High data rate optical telemetry for LEO satellite
From SILEX/LOLA to High data rate optical telemetry for LEO satellite L. Vaillon, G. Planche, P. Bernard, EADS Astrium Satellites, France ludovic.vaillon@astrium.eads.net BIOGRAPHY The authors are from
More informationOptical Communication Experiment Using Very Small Optical TrAnsponder Component on a Small Satellite RISESAT
Optical Communication Experiment Using Very Small Optical TrAnsponder Component on a Small Satellite RISESAT Toshihiro Kubo-oka, Hiroo Kunimori, Hideki Takenaka, Tetsuharu Fuse, and Morio Toyoshima (National
More informationAnalysis of four channel CWDM Transceiver Modules based on Extinction Ratio and with the use of EDFA
Analysis of four channel CWDM Transceiver Modules based on Extinction Ratio and with the use of EDFA P.P. Hema [1], Prof. A.Sangeetha [2] School of Electronics Engineering [SENSE], VIT University, Vellore
More informationProtection criteria for Cospas-Sarsat local user terminals in the band MHz
Recommendation ITU-R M.1731-2 (01/2012) Protection criteria for Cospas-Sarsat local user terminals in the band 1 544-1 545 MHz M Series Mobile, radiodetermination, amateur and related satellite services
More informationRADIATION-HARD MID-POWER BOOSTER OPTICAL FIBER AMPLIFIERS FOR HIGH-SPEED DIGITAL AND ANALOGUE SATELLITE LASER COMMUNICATION LINKS
RADIATION-HARD MID-POWER BOOSTER OPTICAL FIBER AMPLIFIERS FOR HIGH-SPEED DIGITAL AND ANALOGUE SATELLITE LASER COMMUNICATION LINKS L. Stampoulidis, E. Kehayas, M. Kehayas, G. Stevens, L Henwood-Moroney,
More informationPerformance Evaluation of Gbps (1.28 Tbps) FSO Link using RZ and NRZ Line Codes
Performance Evaluation of 32 40 Gbps (1.28 Tbps) FSO Link using RZ and NRZ Line Codes Jasvir Singh Assistant Professor EC Department ITM Universe, Vadodara Pushpa Gilawat Balkrishna Shah Assistant Professor
More informationDeep- Space Optical Communication Link Requirements
Deep- Space Optical Communication Link Requirements Professor Chester S. Gardner Department of Electrical and Computer Engineering University of Illinois cgardner@illinois.edu Link Equation: For a free-
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 informationAircraft to Ground Unidirectional Laser-Comm. Terminal for High Resolution Sensors
Aircraft to Ground Unidirectional Laser-Comm. Terminal for High Resolution Sensors Joachim Horwath, Christian Fuchs German Aerospace Centre (DLR), Institute of Communications and Navigation, Weßling, Germany.
More informationSHF Communication Technologies AG
SHF Communication Technologies AG Wilhelm-von-Siemens-Str. 23 Aufgang D 12277 Berlin Marienfelde Germany Phone ++49 30 / 772 05 10 Fax ++49 30 / 753 10 78 E-Mail: sales@shf.biz Web: http://www.shf.biz
More informationSpaceDataHighway. Commercial Data Relay Service and its Evolution
SpaceDataHighway Commercial Data Relay Service and its Evolution 23rd Ka-Band Broadband - Optical Technology and Systems Panel Trieste, 17 th October 2017 Mr. Hughes Boulnois Airbus SpaceDataHighway TM
More informationSpace Frequency Coordination Group
Space Frequency Coordination Group Report SFCG 38-1 POTENTIAL RFI TO EESS (ACTIVE) CLOUD PROFILE RADARS IN 94.0-94.1 GHZ FREQUENCY BAND FROM OTHER SERVICES Abstract This new SFCG report analyzes potential
More informationAntennas & Propagation. CSG 250 Fall 2007 Rajmohan Rajaraman
Antennas & Propagation CSG 250 Fall 2007 Rajmohan Rajaraman Introduction An antenna is an electrical conductor or system of conductors o Transmission - radiates electromagnetic energy into space o Reception
More informationOmni-directional Free Space Optical Laser Communication MERIT Kenneth Tukei. University of Maryland, College Park. Maryland Optics Group
Omni-directional Free Space Optical Laser Communication MERIT 2007 Kenneth Tukei University of Maryland, College Park Dr. Christopher Davis Faculty Advisor Navik Agrawal Graduate Student Advisor Maryland
More informationData and Computer Communications. Tenth Edition by William Stallings
Data and Computer Communications Tenth Edition by William Stallings Data and Computer Communications, Tenth Edition by William Stallings, (c) Pearson Education - Prentice Hall, 2013 Wireless Transmission
More informationComparison of Polarization Shift Keying and Amplitude Shift Keying Modulation Techniques in FSO
Comparison of Polarization Shift Keying and Amplitude Shift Keying Modulation Techniques in FSO Jeema P. 1, Vidya Raj 2 PG Student [OEC], Dept. of ECE, TKM Institute of Technology, Kollam, Kerala, India
More informationSimulative Analysis of 10 Gbps High Speed Free Space Optical Communication Link
, pp. 139-144 http://dx.doi.org/10.14257/ijfgcn.2016.9.3.13 Simulative Analysis of 10 Gbps High Speed Free Space Optical Communication Link Mehtab Singh ECE Department Satyam Institute of Engineering and
More informationUsing Variable Coding and Modulation to Increase Remote Sensing Downlink Capacity
Using Variable Coding and Modulation to Increase Remote Sensing Downlink Capacity Item Type text; Proceedings Authors Sinyard, David Publisher International Foundation for Telemetering Journal International
More informationLow Cost Earth Sensor based on Oxygen Airglow
Assessment Executive Summary Date : 16.06.2008 Page: 1 of 7 Low Cost Earth Sensor based on Oxygen Airglow Executive Summary Prepared by: H. Shea EPFL LMTS herbert.shea@epfl.ch EPFL Lausanne Switzerland
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 informationTSEK02: Radio Electronics Lecture 6: Propagation and Noise. Ted Johansson, EKS, ISY
TSEK02: Radio Electronics Lecture 6: Propagation and Noise Ted Johansson, EKS, ISY 2 Propagation and Noise - Channel and antenna: not in the Razavi book - Noise: 2.3 The wireless channel The antenna Signal
More informationOptiva OTS-2 18 GHz Amplified Microwave Band Fiber Optic Links
MHz to 18 GHz Amplified Microwave Transport System The Optiva OTS-2 18 GHz Microwave Band transmitter and receiver are ideal to construct transparent fiber optic links in the MHz to 18 GHz frequency range
More informationEye-Diagram-Based Evaluation of RZ and NRZ Modulation Methods in a 10-Gb/s Single-Channel and a 160-Gb/s WDM Optical Networks
International Journal of Optics and Applications 2017, 7(2): 31-36 DOI: 10.5923/j.optics.20170702.01 Eye-Diagram-Based Evaluation of RZ and NRZ Modulation Methods in a 10-Gb/s Single-Channel and a 160-Gb/s
More informationOptical Communications Group (332-D): Deep-space Optical Terminal (DOT) and Active Isolation Steering Element (AISE) design
Optical Communications Group (332-D): Deep-space Optical Terminal (DOT) and Active Isolation Steering Element (AISE) design I. Abstract Derek Wells (1), Dr. Martin Regehr (2) California State University,
More information(SDR) Based Communication Downlinks for CubeSats
Software Defined Radio (SDR) Based Communication Downlinks for CubeSats Nestor Voronka, Tyrel Newton, Alan Chandler, Peter Gagnon Tethers Unlimited, Inc. 11711 N. Creek Pkwy S., Suite D113 Bothell, WA
More informationTechnician Licensing Class
Technician Licensing Class Talk to Outer Presented Space by Amateur Radio Technician Class Element 2 Course Presentation ELEMENT 2 SUB-ELEMENTS (Groupings) About Ham Radio Call Signs Control Mind the Rules
More informationImplementing of High Capacity Tbps DWDM System Optical Network
, pp. 211-218 http://dx.doi.org/10.14257/ijfgcn.2016.9.6.20 Implementing of High Capacity Tbps DWDM System Optical Network Daleep Singh Sekhon *, Harmandar Kaur Deptt.of ECE, GNDU Regional Campus, Jalandhar,Punjab,India
More informationPROCEEDINGS OF SPIE. Inter-satellite omnidirectional optical communicator for remote sensing
PROCEEDINGS OF SPIE SPIEDigitalLibrary.org/conference-proceedings-of-spie Inter-satellite omnidirectional optical communicator for remote sensing Jose E. Velazco, Joseph Griffin, Danny Wernicke, John Huleis,
More informationA modular solution for routine optical satellite-toground communications on small spacecrafts
A modular solution for routine optical satellite-toground communications on small spacecrafts M. Bacher, T. Dreischer, M.Mosberger, B.Thieme RUAG Space, Opto-Electronics & Instruments Department RUAG Schweiz
More informationRanging and Optical Communication R&D for Deep Space Missions
National Institute of Information and Communications Technology 14th BroadSky Workshop Ranging and Optical Communication R&D for Deep Space Missions October 18, 2016 Hiroo Kunimori *1) and Hayabusa2 LIDAR
More informationPerformance analysis of terrestrial WDM-FSO Link under Different Weather Channel
Available online at www.worldscientificnews.com WSN 56 (2016) 33-44 EISSN 2392-2192 Performance analysis of terrestrial WDM-FSO Link under Different Weather Channel ABSTRACT Mazin Ali A. Ali Department
More informationThe NASA Optical Communication and Sensor Demonstration Program: An Update
SSC14-VI-1 The NASA Optical Communication and Sensor Demonstration Program: An Update Siegfried W. Janson and Richard P. Welle The Aerospace Corporation August 5, 2014 2014 The Aerospace Corporation AeroCube-OCSD
More informationSPATIAL DIVERSITY TECHNIQUES IN MIMO WITH FREE SPACE OPTICAL COMMUNICATION
SPATIAL DIVERSITY TECHNIQUES IN MIMO WITH FREE SPACE OPTICAL COMMUNICATION Ruchi Modi 1, Vineeta Dubey 2, Deepak Garg 3 ABESEC Ghaziabad India, IPEC Ghaziabad India, ABESEC,Gahziabad (India) ABSTRACT In
More informationExploring Trends in Technology and Testing in Satellite Communications
Exploring Trends in Technology and Testing in Satellite Communications Aerospace Defense Symposium Giuseppe Savoia Keysight Technologies Agenda Page 2 Evolving military and commercial satellite communications
More informationDATA RATE ANALYSIS AND COMPARING THE EFFECT OF FOG AND SNOW FOR FREE SPACE OPTICAL COMMUNICATION SYSTEM
Vol. 1, Spl. Issue 2 (May, 2014) e-issn: 1694-2310 p-issn: 1694-2426 GV/ICRTEDC/12 DATA RATE ANALYSIS AND COMPARING THE EFFECT OF FOG AND SNOW FOR FREE SPACE OPTICAL COMMUNICATION SYSTEM 1 Er. Sagar, 2
More informationANALYSIS OF FOG ATTENUATION MODELS FOR MULTITRANSCEIVER FSO SYSTEM FOR DIFFERENT FREQUENCIES
ANALYSIS OF FOG ATTENUATION MODELS FOR MULTITRANSCEIVER FSO SYSTEM FOR DIFFERENT FREQUENCIES Dheeraj duvey 1, Er. Ritu gupta 2 1 M.Tech student R.B.I.E.B.T., 2 Asstt. Prof. R.B.I.E.B.T. ABSTRACT Multiple
More informationDOCOMAS Deep Space Optical Communications Architecture Study. Executive Summary. ESOC Contract No /12/F/MOS
Deep Space Optical Communications Architecture Study Executive Summary ESOC Contract No. 4000106720/12/F/MOS -Issue 1 March 2016 1 of 11 1 INTRODUCTION Satellite based optical communications in space is
More informationSpace Systems Engineering
Space Systems Engineering This course studies the space systems engineering referring to spacecraft examples. It covers the mission analysis and design, system design approach, systems engineering process
More informationBeamforming for 4.9G/5G Networks
Beamforming for 4.9G/5G Networks Exploiting Massive MIMO and Active Antenna Technologies White Paper Contents 1. Executive summary 3 2. Introduction 3 3. Beamforming benefits below 6 GHz 5 4. Field performance
More informationBroadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX)
Broadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX) Joachim Horwath 1, Markus Knapek, Bernhard Epple, Martin Brechtelsbauer German Aerospace
More informationSATELLIT COMMUNICATION
QUESTION BANK FOR SATELLITE COMMUNICATION UNIT I 1) Explain Kepler s laws. What are the fords that give rise to these laws? 2) Explain how a satellite is located with respect to earth. 3) Describe antenna
More informationTSEK02: Radio Electronics Lecture 6: Propagation and Noise. Ted Johansson, EKS, ISY
TSEK02: Radio Electronics Lecture 6: Propagation and Noise Ted Johansson, EKS, ISY 2 Propagation and Noise - Channel and antenna: not in the Razavi book - Noise: 2.3 The wireless channel The antenna Signal
More information