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GNSS-R EARTH SURFACE SURVEY DEVICE AND METHOD
GNSS-R EARTH SURFACE SURVEY DEVICE AND METHOD
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机译：GNSS-R地球表面测量装置和方法
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摘要
The present disclosure discloses an GNSS-R earth surface survey device and method. By configuring a GNSS signal receiving antenna capable of receiving signals at respective frequencies corresponding to different GNSS systems, and at the same time, acquiring, during an intermediate frequency extraction stage and through independent channels, direct signals and reflected signals of respective different frequencies so as to obtain digital intermediate frequency signals; selecting, based on a user setting or a signal strength, a GNSS system to be used to process data; and obtaining, by analyzing a Doppler frequency shift and a time delay of the digital intermediate frequency signal, a difference of the GNSS reflected signal with respect to the GNSS direct signal, thereby obtaining earth surface data through inversion on the basis of the same. In this way, the present disclosure enables compatibility with different GNSS system signals at the same time for earth surface survey.
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