分析了Ｉ、Ｑ幅相误差对系统的影响，介绍了低中频采样、数字正交化技术的几种方法，并给出了仿真结果。结合现代机载火控雷达的特点，讨论了其可行性及局限性，提出了两种实现方法

The effects of I,Q amplitude phase errors on systems are analyzed in this paper. Several methods of LIF signal sampling and digital quadrature techniques are introduced, and simulation results are given out.According to features of airborne fire control radars, its availability and limitation are discussed, and two schemes are proposed.

TN959.73 TN957.51