Satellite-borne GNSS-R multi-beam phased array antenna beam control unit

Abstract

The invention discloses a satellite-borne GNSS-R multi-beam phased array antenna beam control unit. The satellite-borne GNSS-R multi-beam phased array antenna wave beam control unit comprises a first beam controller and a second beam controller, wherein the first beam controller and the second beam controller are used for conducting calculation and beam control on beam control codes of a multi-beam phased array antenna to the sky and beam control codes of a multi-beam phased array antenna to the ground respectively. Each of the first beam controller and the second beam controller comprises an FPGA phase matching module, a DSP information processing module and a phase matching interface circuit module. Each FPGA phase matching module receives a beam control instruction from a superior instruction unit through the time sequence design of an FPGA; each DSP information processing module is connected with the corresponding FPGA phase matching module, calculates the beam control codes according to the corresponding beam control instruction, conducts various kinds of compensation and splicing operation on the beam control codes and calculation of a check code at the same time, returns a processing result to the corresponding FPGA phase matching module, and conducts movement direction distribution on the beam control codes which are obtained through calculation; each phase matching interface circuit module is connected with the corresponding FPGA phase matching module and a plurality of exciters, and transmits the beam control codes which are processed through movement direction distribution to the corresponding exciters, so that a corresponding phased array antenna unit is controlled.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a beam control unit of a spaceborne GNSS-R multi-beam phased array antenna. Background technique [0002] Microwave remote sensing technology uses the L-band signal of navigation satellites as the transmission source, receives and processes ocean, land or target reflection signals through GNSS-R microwave remote sensing devices on shore-based, aviation, space-borne or other platforms, and realizes feature extraction or target detection. detection technology. Today, GNSS-R technology is a brand-new ocean remote sensing technology, and it is one of the research hotspots in the field of remote sensing and navigation technology at home and abroad. It uses the reflected signals of GNSS navigation satellites to remote sense the ocean and land. Significant wave height, seawater salinity detection, sea surface height measurement, tsunami detection and early warning research, land soi...

AI Technical Summary

Problems solved by technology

[0003] Although the GNSS-R microwave remote sensing technology adopts the phased array antenna to cover a large area and has obvious advantages, the double-sided multi-beam phased array antenna is used, and the multiple beams of the ground / sky phased array antenna can work in time-sharing or Work at the same time, there is no similar invention and report

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