Satellite-borne synchronous transceiving device and signal processing method

Abstract

The embodiment of the invention discloses a satellite-borne synchronous transceiving device, which comprises a power amplifier circuit, a low-noise amplification circuit and a circulator respectivelyconnected with the power amplifier circuit and the low-noise amplification circuit, the circulator is also connected with a microwave switch circuit through a coupler, and the microwave switch circuitis also connected with a synchronous antenna; the power amplifier circuit, the circulator, the coupler and the microwave switch circuit form a transmitting link; and the microwave switch circuit, thecoupler, the circulator and the low-noise amplification circuit form a receiving link. Through the design of the satellite-borne synchronous transceiving device, satellite-borne synchronous transceiver single-machine equipment is successfully developed, a double-base satellite-borne InSAR phase synchronization function is realized, the design realization of a double-satellite phase synchronization system is ensured, the phase error of the double-satellite synchronization system is reduced, and the double-satellite synchronization precision is improved.

Description

technical field [0001] The invention relates to the field of microwave remote sensing technology, in particular to a satellite-borne synchronous transceiver device and a signal processing method thereof. Background technique [0002] In the prior art, the distributed spaceborne SAR system is a special mode of synthetic aperture radar, and the radar receiver and transmitter are located on different platforms. This feature of sending and receiving separation brings many advantages, such as flexible baseline configuration, Various receiving modes can provide finer classification information of ground features, etc., but the characteristics of separate sending and receiving also bring many new technical challenges. Among them, the problem of dual-star phase synchronization is particularly prominent, which cannot meet the needs of dual-base satellites in the field of microwave remote sensing technology. The performance requirements of spaceborne interferometric SAR (InSAR) phase ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the distributed spaceborne SAR system is a special mode of synthetic aperture radar, and the radar receiver and transmitter are located on different platforms. This feature of sending and receiving separation brings many advantages, such as flexible baseline configuration, Various receiving modes can provide finer classification information of ground features, etc., but the characteristics of separate sending and receiving also bring many new technical challenges. Among them, the problem of dual-star phase synchronization is particularly prominent, which cannot meet the needs of dual-base satellites in the field of microwave remote sensing technology. The performance requirements of space-borne interferometric SAR (InSAR) phase synchronization, and the dual-base space-borne InSAR system is currently in the research and development stage, and does not involve the stand-alone design of the synchronous transceiver

Images