基于时域对消的抗噪声调频干扰算法仿真分析

为提高雷达的抗干扰能力，首先论述了噪声调频干扰的数学模型与主要参数，采用了基于时域对消的算法抗噪声调频干扰，给出了算法的数学推导过程．该算法通过对数变换，分别由信号的实部与虚部估计出干扰信号的瞬时幅度与瞬时频率，以此对干扰信号进行重构，最后再利用时域对消的方法抑制掉了干扰信号分量．最后进行了仿真验证，证明了该算法的有效性．

Simulation Analysis of Anti-noise FM Jamming Algorithm Based on Time-domain Cancellation

For boosting the radars＇ anti-jamming capability, a math model of noise FM jamming and its main parameters are discussed, and an algorithm of anti-noise FM jamming and its mathematical derivation are given based on time domain cancellation in this paper. In this algorithm, the instantaneous amplitude and frequency of jamming signals are estimated respectively by the real part and imaginary part of signals through logarithm conversion, based on which, the jamming signals can be reconstructed, and the jamming signal components are rejected by using the method of time-domain cancellation. Finally, simulation and tests are performed for proving the feasibility of this proposed algorithm.