【摘 要】
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The full constellation of Chinese Global Navigation Satellite System (GNSS) BeiDou-3 has been deployed completely and started fully operational service.In addition to providing global Positioning,Navigation and Timing (PNT) services,the BeiDou-3 satellite
【机 构】
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Institute of Space Sciences (ICE,CSIC),Barcelona 08193,Spain;Institut d’Estudis Espacials de Catalun
论文部分内容阅读
The full constellation of Chinese Global Navigation Satellite System (GNSS) BeiDou-3 has been deployed completely and started fully operational service.In addition to providing global Positioning,Navigation and Timing (PNT) services,the BeiDou-3 satellites transmissions can also be used as the sources of illumination for Earth Observation (EO) with a bistatic radar configura-tion.This innovative EO concept,known as GNSS reflectometry (GNSS-R),allows to measure the Earth surface characteristics at high resolution via the reflected L-band radar signals collected by a constellation of small,low cost and low Earth orbiting satellites.For the first time in orbit,earth reflected BeiDou-3 signal has been detected from the limited sets of raw data collected by the NASA\'s Cyclone GNSS (CYGNSS) constellation.The feasibility of spaceborne BeiDou-3 reflec-tions on two typical applications,including sea surface wind and flooding inundation detection,has been demonstrated.The methodology and results give new strength to the prospect of new spaceborne GNSS-R instruments and missions,which can make multi-GNSS reflectometry obser-vations available to better capture rapidly changing weather systems at better spatio-temporal scales.
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