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Remote Sensing with Signals of Opportunity

Remote Sensing with Signals of Opportunity. James L Garrison School of Aeronautics and Astronautics School of Electrical and Computer Engineering (by courtesy) Division of Environmental and Ecological Engineering .

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Remote Sensing with Signals of Opportunity

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  1. Remote Sensing with Signals of Opportunity James L Garrison School of Aeronautics and Astronautics School of Electrical and Computer Engineering (by courtesy) Division of Environmental and Ecological Engineering

  2. Objective: Demonstrate land and ocean remote sensing using communication satellite signals • Heritage – demonstration using navigation (GNSS) signals in L-band • Recent results – ocean wind sensing with XM radio (S-band signals) • Future/Ongoing: Direct Broadcast (Ku-band) for high-resolution ocean winds, UHF for deep-penetration soil moisture

  3. Remote sensing with GNSS Reflections • PT • PRa GPT • Vegetation canopy • Soil Tg

  4. Remote sensing with GNSS Reflections This phenomenon can easily be observed at sunset: (water is calm inside the red ellipse) Fundamental Physics: Rougher surface = larger distribution in path delays Receiver glistening zone (From Chapron and Ruffini, GNSS-R workshop, Barcelona. Photo taken at Le Conquet, Brittany) glistening zone

  5. XM Radio Bistatic Radar • Ambiguity function – key feature to perform “range-Doppler mapping”

  6. Spring 2011 Goal • Research UHF satellite availability and antenna options • Collect raw samples of Ku-band and UHF signals • Generate ambiguity function from raw data – demonstrating ability to detect and process reflected signal.

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