Multi-channel microwave radiometer system control device and control method

Abstract

The invention provides a multi-channel microwave radiometer system control device and a control method. The control device comprises an FPGA development board part, a data acquisition circuit part, an automatic gain control (AGC) circuit part, a system switch control circuit part and a level switching circuit part, wherein the FPGA development board part receives an instruction packet of a remotecomputer through a serial bus, determines a system working mode according to an injection instruction, simultaneously provides corresponding time sequences for the data acquisition circuit part, the AGC circuit part and the system switch control circuit part, sends a control instruction to the system, controls a plurality of channels of a microwave radiometer to acquire scientific data and temperature data, and is responsible for downloading the acquired scientific data packet to the remote computer. In the invention, the control method of combining the existing FPGA development board with other control circuits is adopted, thus the multi-channel microwave radiometer system control device has the advantages of reduced cost, shortened development cycle, better flexibility and expandabilityand wider application range.

Description

technical field [0001] The invention relates to a radiometer system control device, in particular to a system control device for a multi-channel microwave radiometer based on an FPGA development board and a control method thereof. Background technique [0002] Microwave radiometer is a passive microwave remote sensor, which is used for all-day and all-weather observation of global atmospheric temperature and humidity, water vapor content, rainfall and other space weather data. It has played an important role in the research of environment and sea state detection, agricultural and forestry disease and insect pest detection, and disastrous weather forecast and detection. Because the microwave radiometer is a passive remote sensor, its sensitivity requirement is very high; at the same time, because the design of today's remote sensing instruments tends to be more and more high functional density and miniaturization, therefore, for the system control device of the multi-channel ...

AI Technical Summary

Problems solved by technology

The advantage is that the power consumption is reduced, and the light and small size of the equipment is realized, thereby improving the above-mentioned deficiencies of the system control device using the 80C31 single-chip microcomputer as the core; but the obvious defect of this design is that it cannot be fixed with the remote computer data exchange bus, and it can be transplanted Poor performance, long development and debugging cycle, low scalability and adaptability, and high cost

Images