Aerostat-based occultation detection system and method

Abstract

Embodiments of the invention disclose an aerostat-based occultation detection system and method. The system comprises a GNSS occultation antenna array, a GNSS through antenna, a radio frequency signalprocessing circuit, a digital signal processing circuit, an anti-fuse FPGA and a FLASH memory; the GNSS occultation antenna array is connected with the radio frequency signal processing circuit; theGNSS through antenna is connected with the radio frequency signal processing circuit; the radio frequency signal processing circuit is connected with the digital signal processing circuit; the digitalsignal processing circuit is connected with the anti-fuse FPGA; the anti-fuse FPGA is connected with the FLASH memory; and the FLASH memory is used for storing a bit stream file. According to the technical scheme provided by the embodiment of the invention, the bit stream files with different functions are loaded to an SOC processor by analyzing the telemetering instructions, an ionized layer mask occultation function and an atmospheric occultation detection function are rapidly switched, and key observation is carried out on the key region.

Description

technical field [0001] Embodiments of the present invention relate to space detection technology, in particular to an aerostat-based occultation detection system and method. Background technique [0002] In recent years, GNSS (Global Navigation Satellite System, Global Navigation Satellite System) has developed rapidly in countries all over the world. Among them, the aerospace industry has entered the process of commercialization in many fields, and the application of GNSS remote sensing technology has made breakthrough progress. GNSS remote sensing technology uses radio waves to propagate in the earth's atmosphere, or changes in signal amplitude, phase and other physical quantities after being reflected by ground objects, to invert meteorological elements such as the earth's atmosphere, ocean and soil. The retrieval products of GNSS occultation detection are ionosphere and atmospheric parameters. Ionospheric inversion products include ionospheric electron density profile a...

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Problems solved by technology

[0003] In the process of realizing the present invention, the inventor found that the existing technology has the disadvantages of less allocation of occultation channels, heavy weight, high launch cost, and failure to realize key observations in key areas. Domestically, GNSS occultation detection is lightweight, low-cost, and Multi-purpose research is still in the preliminary research stage, with less relevant information, far behind the research level of NASA (National Aeronautics and Space Administration, National Aeronautics and Space Administration) and ESA (European Space Agency, European Space Agency)

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