Spaceborne distributed type synthetic aperture microwave radiometer system and design method

Abstract

The invention provides a spaceborne distributed type synthetic aperture microwave radiometer system and a design method. The system is formed by a plurality of small synthetic aperture microwave radiometer systems arranged according to a certain distributed structure, the space resolution of the whole system is determined by a maximum physical dimension of a whole distributed arrangement antenna array, hardware structures of all the small synthetic aperture microwave radiometer systems are completely the same, each small synthetic aperture microwave radiometer system comprises an antenna array, a receiver channel array, a signal acquisition subsystem, a sub-band division subsystem, a related processing subsystem, a brightness temperature inversion subsystem, and an inter-satellite communication subsystem etc. The whole system adopts the distributed structure, the system is advantaged by maneuverability, flexibility, and high redundant fault capability; besides, the manufacturing difficulty of the system is reduced, batch production is facilitated, and the cost of the single system can be reduced.

Description

technical field [0001] The invention relates to a space-borne distributed synthetic aperture microwave radiometer system and a design method, and belongs to the technical field of space microwave remote sensing. Background technique [0002] The microwave radiometer system is an important payload of spaceborne passive microwave remote sensing, which can mainly obtain important global physical parameters, such as soil moisture, ocean salinity, atmospheric temperature and humidity, etc. At present, microwave radiometer systems mainly include real aperture microwave radiometer system, phased array microwave radiometer system, synthetic aperture microwave radiometer system, etc. However, because the microwave radiometer system of the existing system is limited in obtaining high-spatial-resolution passive microwave remote sensing images, further improving the spatial resolution of space-borne passive microwave remote sensing has always been an important issue in passive microwave...

AI Technical Summary

Problems solved by technology

For large-scale synthetic aperture microwave radiometers, due to the large number of antenna units and channel units, the system hardware structure and signal processing will be very complicated. Factors such as increased weight and antenna deformation caused by large array antennas restrict The scale of the system limits its further improvement of spatial resolution

[0007] To sum up, the spaceborne microwave radiometer system of the existing system is limited by factors such as large array antenna, heavy scanning platform or complex system hardware structure and signal processing to further improve the spatial resolution.

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