条件匹配滤波器与雷达抗寻呼信号干扰

在某些特定频率点的增益为零的条件下,使滤波器的输出信噪比最大,我们称其为条件匹配波波器.本文讨论了条件匹配滤波器的基本原理和性能,与最佳滤波器相比,条件匹配滤波器既不需要多个数据样本用于形成协方差矩阵,也不需要求逆运算来得到权系数矢量.仿真和实测数据验证了条件匹配滤波器用于抑制寻呼信号干扰的可行性.

Constrained Matched Filter and its Application to Rejection of Radio Paging Signals

The filter is called constrained matched filter which cancels out signals at some special frequencyes and maximizes the signal to noise ratio for a desired signal. It is proposed in this paper that the constrained matched filter can be ultilized for rejection of radio paging signals which interference the radars operating at the same frequency band. Comparing with the optimum matched filter the constrained filter requires neither of multiple Snapshots for covariance matrix, nor matrix inversion, The simulations and experiment results are given.