FPGA (field programmable gate array) based control device and FPGA based control method for satellite-borne microwave radiometer

Abstract

The invention provides an FPGA (field programmable gate array) based control system and an FPGA based control method for a satellite-borne microwave radiometer. The system comprises a 1553 communication module, a data collection module, an AGC (automatic gain control) module and an antenna control module. The 1553 communication module is responsible for transmitting ground commands to each module and controlling the state of the whole satellite-borne microwave radiometer, the scanning mode of an antenna and AGC settings. The data collection module is responsible for collecting auxiliary data such as scientific data and temperatures of the satellite-borne microwave radiometer in a data collection circuit and transmitting the data to the 1553 communication module. The 1553 communication module packages and transmits the data to a satellite control center and then transmits the data to the ground. The AGC module is responsible for executing AGC setting commands of the ground. The antenna control module executes antenna scanning mode commands of the ground and transmits the state and an angle value of the antenna to the 1553 communication module. The 1553 communication module transmits the state and the angle value of the antenna to the satellite control center and to the ground sequentially.

Description

technical field [0001] The present invention relates to a control device of a space-borne microwave radiometer, that is, the present invention relates to a control device and method of an FPGA-based space-borne microwave radiometer. Background technique [0002] In the previous design of satellite-borne microwave remote sensors in China, there are two methods for designing the digital processing part. One is to use the 80C31 device as the center to design, and the peripheral circuit is composed of discrete digital circuit chips. The advantage of using this method for design is that the technology is mature, the technical risk is small, and there are many resources that can be used. Due to the limitations of the microprocessor chip and peripheral circuits, the traditional solution has the disadvantages of large volume and high power consumption. Another method is based on the SRAM FPGA chip design. Although this method meets the requirements of system miniaturization, the hi...

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Problems solved by technology

Due to the limitations of the microprocessor chip and peripheral circuits, the traditional solution has the disadvantages of large volume and high power consumption.

Another method is based on the SRAM FPGA chip design. Although this method meets the requirements of system miniaturization, the high-energy neutrons naturally produced in the earth's atmosphere cause the data stored in the SRAM to flip.

Moreover, these two methods are based on processor technology. The program controls the time-sharing work of each peripheral device according to the pipeline flow. When the peripheral modules need to be controlled at the same time, the defect of this control method is reflected.

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