The effect of amplitude and phaseerror on the performance of receiver is discussed in this paper, and a method of digital correction based on FIR filter is proposed.
本文仔细分析了幅相误差对接收机性能的影响，提出了基于FIR滤波的一种数字域校正的方法。
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The results show that the phaseerror of the vector measurement is zero, and amplitude errors can be eliminated, and high measurement accuracy can be obtained by using low bit D/A converter.
A method of digital calibration in the amplitude and phase imbalances of sum and difference channels, and of angle error normalization processing is provided.