论文部分内容阅读
分析了使用自相关和反向预测技术从被噪声淹没的信号中检测出信噪比 ,以判定有无雷达信号存在的方法。分析了利用接收到的雷达直接辐射信号找出由目标反射的雷达信号的延迟时间 ,以及反射信号能量的互相关方法。最后 ,以仿真例子验证了分析结果的正确性 ,进而说明了这两种技术在低截获概率雷达侦察和仿多基地雷达机制的被动定位方面的应用前景。
The method of detecting signal to noise ratio (SNR) from noise submerged signal by using autocorrelation and backward prediction techniques is analyzed to determine the existence of radar signal. The delay time of the radar signal reflected by the target and the cross-correlation method of the reflected signal energy are analyzed by using the received direct radiation signal of the radar. Finally, the simulation results verify the correctness of the analysis results, and then illustrate the application prospects of these two technologies in the passive intercept of low-probability-of-arrival radar reconnaissance and multi-base-based radar systems.