Spaceborne dual-channel angle tracking calibration system and method
A technology of calibration system and calibration method, which is applied in radio wave measurement system, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve the problems of channel phase inconsistency, no amplitude inconsistency, real-time calibration, etc., to improve The effect of measurement accuracy, high real-time performance, and fast calculation method
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[0042] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0043] 1. Systematic review
[0044] Such as figure 1 Shown is a system block diagram in the present invention, the system in the present invention includes: antenna device, duplexer, synthesis network device, sum receiver, differential receiver, transmitter, digital signal processor and calibration device, The calibration device includes a radio frequency switch, a magic T and two calibration couplers. The connection relationship of each component can be seen from the figure. Wherein, the sum receiver forms a sum receive channel; the differential receiver forms a differential receive channel.
[0045] In each cycle, the system can firstly measure the errors of the two channels in the current cycle, and obtain amplitude compensation value and phase compensation value respectively. Then detect the target angle, obtain the angle error signal and then u...
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