巴克码信号处理的计算机仿真

巴克码信号是二相编码信号的一种,在PD雷达中得到了广泛应用。对巴克码信号进行匹配滤波处理可使输出信噪比达到最大。介绍了匹配滤波器的设计原理,给出白噪声匹配滤波器的传递函数模型。在Matlab/Simulink平台上,建立雷达发射信号为巴克码信号时匹配滤波器的仿真模型。计算机仿真表明,巴克码信号经匹配滤波器后脉冲宽度被压缩,信噪比得到了显著提高。该滤波器的脉冲压缩功能,解决了一般脉冲雷达通过增加脉冲宽提高作用距离与距离分辨力下降的矛盾。

Computer Simulation of Signal Processing of Barker Code

Barker code signal,one of the two-phase code signal,is used widely in PD radar.Matched filter processing can make the output SNR reach the maximum.The design principle of matched filter is introduced,and the model of transfer function of matched filter for white noise is given.Based on Matlab/Simulink,the simulation model of matched filter for Baker code signal is setup.The simulation show that the pulse width is pressed when the Baker code signal through a matched filter,and the SNR is enhanced evidently.This matched filter solved the conflict between the raising of detection range and the falling of the range resolution in common pulse radar by pulse pressing.