First spaceborne observation of an Earth-reflected GPS signal
نویسندگان
چکیده
منابع مشابه
First Spaceborne Observation of an Earth-Reflected GPS Signal
We present the first spaceborne observation of a Global Positioning System (GPS) signal reflected from the Earth’s surface, specifically from the Pacific Ocean. This result is scaled to obtain the expected voltage signal-to-noise ratio (SNR) and altimetric accuracy for a generic GPS-reflections altimetry mission, and the current SAC-C and CHAMP missions. Cross-correlating a three-parameter phas...
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With the recent completion of the Global Positioning System constellation and the appearance of increasingly affordable spaceborne receivers, GPS is moving rapidly into the world of space flight projects. Indeed, owing to the great utility and convenience of autonomous onboard positioning, timing, and attitude determination, basic navigation receivers are coming to be seen as almost indispensab...
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An analysis of spaceborne Global Positioning System reflectometry (GPS-R) data from the TechDemoSat-1 (TDS-1) satellite is carried out to image the ocean sea surface height (SSH). An SSH estimation algorithm is applied to GPS-R delay waveforms over two regions in the South Atlantic and the North Pacific. Estimatesmade fromTDS-1 overpasses during a 6month period are aggregated to produce SSHmaps...
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A reflected GPS signal is normally considered as noise (multipath). However, we believe that a reflected signal contains information about the reflecting object. Though, this information may not be useful for accurate position computation, it may help us to identify the reflecting object itself, which is a type of remote sensing. Besides, by measuring the time delay of the reflected signal, it ...
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The Global Navigation Satellite Systems (GNSS) transmit L-band signals (see the Reference [1]). The GNSS receivers, as its main objective, measure the time elapsed from the transmission to the reception of L Band signals to infer the distance transmitter-receiver and to derive the three coordinates and time status of the receiver. The same signals could be recorded after its reflection on the E...
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ژورنال
عنوان ژورنال: Radio Science
سال: 2002
ISSN: 0048-6604
DOI: 10.1029/2000rs002539