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Use of ECHO-L 3 channels Datalogger for Reflectometry

Use of ECHO-L 3 channels Datalogger for Reflectometry. Joel KORSAKISSOK. Summary. Introduction SILICOM company & Products ECHO Datalogger Portable version Rack version Use of ECHO for REFLECTOMETRY. Key Facts.

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Use of ECHO-L 3 channels Datalogger for Reflectometry

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  1. Use of ECHO-L 3 channelsDatalogger for Reflectometry Joel KORSAKISSOK

  2. Summary • Introduction • SILICOM company & Products • ECHO Datalogger • Portable version • Rack version • Use of ECHO for REFLECTOMETRY Echo-L

  3. Key Facts • SILICOM is a private engineering company based in Paris, Toulouse and Rennes specialized in Computer science, Electromagnetic, GNSS and hard-soft development • Technical skills: Software, RF/Hyper, DSP, Electronics • Application domains: Space, Aeronautics, Defense, Telecom • More than 30 years of existence, 200 Engineers • 2013 Turnover > 13 M€ • Capital 8,05 M€ Echo-L

  4. International network • In France : Paris, Rennes, Toulouse • Worldwide Distribution Network • Ex. : South Korea, USA, UK, Germany, Netherland, Italy, Canada, China, Japan,… • International Partnership for major Invitation to Tenders Echo-L

  5. Activities • Service: specificDevelopment for customers: GNSS, Telecom, Electronics, Software • Product lines: • Nanosatellites • GNSS simulators, Loggers, Receivers • Electromagnetics • Electronic/Acquisition ECHO L

  6. NanosatelliteActivity • SILICOM is a FRENCH nanosatellite manufacturer: Aerospace Valley Label & Support • NADEGE Platform: 3U, 5kg, 30x10x10cm, not oriented, UHF TMTC • ELISE Platform: 6 or 12U, 10 to 20kg, oriented, propulsed, S & X band TM, 0.1deg pointing, >50W available power ECHO L

  7. GNSS Product line Echo-L

  8. Focus on: RTG2 • Real time environment generation • GPS, GALILEO, GLONASS • SBAS • From 16 up to more than 100 channels • From 1 up to 4 frequencies • MMI with remote access to the application • Highly Parametrable (Signal, front-end…) • Various motions • Choice of various model for error simulation • Hardware in the loop for integration inside a System simulator • Specific « Attitude Control » configuration by synchronization of 2 RTG2 at phase level Echo-L

  9. Focus on: SORGA • Real time, fully software (on PC) • 24 channels, GPS L1 C/A, Indoor / Outdoor receiver • MMI with remote access to the application • Parametrable (Acquisition, tracking, PVT algorithm) • Multipath mitigation • Incoming signal (from file or USB front-end or ECHO-L) • SORGA isused as « developmentplatform » for receptionalgorithms. • Can alsobeported to embeddedsystems (smartphone, aircraft, spacecraft…) to make a highly reconfigurable receiver Echo-L

  10. Focus on: TARGET • Twin software • Multipathsimulation + Environment edition • GNSS signal simulation in the 3D scene: direct signals, reflected, refracted, transmitted • Co-proprietary of SILICOM and OKTAL-SE Echo-L

  11. ECHO Platform Echo-L

  12. ECHO Presentation • Multiple GNSS Signal Recorder • 3 channels of 100MHz BW each • Designed specifically for “low power signal” recording (amplification + AGC) • Designed to record GNSS signal in HIGHFIDELITY => necessary to record perturbated environments (multipath, interference, …) • Why 3 channels? • L1, L2, L5 recording • L1 (direct)/L1 (reflectedcircularrighthand)/L1 (reflectedcircularlefthand) recording => Reflectometry • Possibility to add a “player” function ECHO-L

  13. Specifications • ADC 14bitsI/Q • 100Mhzsampling rate (max) • AGC 60db + 70db amplification on 1 or all channels • SSD drive for high data rate transfer • Exists in 2 RF versions: • 3 channels at 3 frequencies • 3 channels at the same frequency with phase synchronization • Available in Portable housing and Rack Echo-L

  14. RF Stage • ECHO is based on SILICOM SiFEn_R_One_By_OneRFStage: 3 independent amplified channels • Input power / sensitivity –160 dBW +/- 20 dB • 100Mhz BW • 14 bits I/Q • Sampling rate: 100Mhz max • Freq setting 1.1 to 1.6Ghz (extendable on query) • Includes a powerful FPGA Board at PCIe standard (2 slots) ECHO-L

  15. RF Stage architecture • 1 synthesizer version • Exists also in 3 synthesizers version ECHO L

  16. Portable version • Portablehardenedautonomousrecorder • 3 channels of 100MHz BW each • Designed specifically for “low power signal” recording (amplification + AGC) • SSD drive for high data rate transfer • Designed to record GNSS signal in HIGH FIDELITY => necessary to record perturbated environments (multipath, interference, …) • Available with battery • Can be used for: • Multifrequency GNSS Signal recording • Reflectometry (2 or 3 antennas at the same freq. with phase synchronization) • Diversity studies • DirectionofArrivaldetermination Echo-L

  17. Rack version • 19inch hardened autonomous recorder: airbornetests • 3 channels of 100MHz BW each • Extractible SSD drive for high data rate transfer • Can be used for: • Multifrequency GNSS Signal recording • Reflectometry (2 or 3 antennas at the same freq. with phase synchronization) • Specific functions: • Poweron/offrecognitionandautomaticstart • Small Battery for “clean” shutdown • Time synchronization over NTP if available Echo-L

  18. Functionalities • Flow and file name selection • 1 to 3 channels • Centerfreq for each Frequency • Samplingfrequency 10..100Mhz • Quantization 1..16 • Duration of recording • Start/Stop • Available: start recording on external trig signal, periodic recording, … Echo-L

  19. ECHO Demonstration • DatalogFileproduced by ECHO can be analyzed by SORGA product (L1C/A Real time receiver, TTF<60sec) in order to analyze the signal characteristics of all 3 channels: • PRN • C/N0 • Skyplot • PVT • PseudoRange ECHO SORGA Echo-L

  20. Use of ECHO in Reflectometrydomain ECHO-L

  21. Example of ECHO users? • UniversitéduLittoral et de la Côted’Opale: completeautonomousReflectometrymeasurement (battery) • ObservatoireMidiPyrénées: altimetry trial at « phare du Cordouan » • Airbus: for signal recordingonly (airborne): 20 hoursrecordingcapability (automaticstart and shutdown, etc). ECHO L

  22. Advantages of ECHO for reflectometry • Available in multiple version (portable or rack, mono or multifrequency) • 3 channelsallowsdirectsignal + 2 reflected (right and left polar) • Phasesychronization + high RF quality and stability=> centimetricprecision for pseudorangebetweenchannel • Highbandwidth + 14bits = High fidelity, highsensitivity, capability to acquire L2C, and even E5 => betterprecision • Ruggerized, airbornecapability • Automaticstart, time synchronization, trigger ECHO-L

  23. SILICOM Offer • COTS Hardware supplier => ECHO, SiFEn_R_One_By_One,… • COTS Software Supplier: SORGA, TARGET • Cooperation on R&D Project for specificdevelopment: acquisition station, signal analysis, reliable short-delaynanosatelliteplatform • Partner in European FP or ESA project • … Positionnement de satellites géostationnaires

  24. Questions ? Echo-L

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