Interference Characterization of Ground Radar by Low-Orbit SAR Satellites at 35.5-36 GHz in Ka Band
Research has been carried out on the potential interference of low-Earth orbit(LEO)satellites using Ka-band Synthetic Aperture Radar(SAR)with China's terrestrial radar system.On the basis of sorting out the International Telecommunication Union's recommendations and Radio Regulations,the interference problem of a specific SAR-carrying LEO satellite on the ground-based meteorological radar during a complete cycle is analyzed and calculated by means of theoretical analysis and interference simulation.The results of the study show that in the frequency bands where there is an overlap between SAR satellites and ground-based meteorological radars,the satellites will not cause serious interference to radars,taking into account the deployment characteristics of the radars and the orbit characteristics of the satellites.The analytical process and results provide reference for satellite-terrestrial frequency compatibility analysis of similar scenarios and are of guiding significance for the engineering pre-study and application of Ka-band radar and SAR.
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