一种新型中断连续波雷达波形设计研究

A new waveform design of QCW radar

分析了伪码调相连续波雷达存在电磁泄露的不足,提出了一种基于单频伪码调相信号混合的中断连续波雷达波形设计方式。这种设计方法是应用单频信号对多普勒调制不敏感的特性,预先粗测目标信号的多普勒频率,构造多普勒补偿信号,然后将信号送入到匹配滤波进行脉压处理。处理后相位编码信号不再是多普勒敏感信号,主旁瓣也不受多普勒频率的影响。仿真结果验证了该方法的正确性。

The problem that the PRC CW radar has the disadvantage of the electromagnetic leak is analyzed,and a new method is put forward which is mixed the single frequency pulse signal with the Pseudo random code signal for designing the quasi-continuous wave radar's waveform.The method utilizes the characteristic of the single frequency pulse signal to measure the target Doppler frequency firstly,and creates the new signal,which is not influenced by the Doppler frequency.Then the new signal is delivered into the matched filter,and the result will not has the relation of the Doppler frequency.At the same time,the main lobe and the sibe lobe will also have not being influence of the Doppler frequency.The simulation results prove the method is effective.