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介绍了一种对互补码对分别采样,并对互补码对采样进行时间调整补偿的新方法。通过该方法对径向高速度运动目标进行多卜勒相移补偿。当目标径向速在1.75~3M范围时,利用该方法平均主旁瓣比由原来的16dB提高到24dB。在不同的补偿时间上,对上述速度范围内的径向运动目标最恶劣的主旁瓣比也可达到22dB,该方法对低多卜勒频移目标探测性能没有丝毫影响,并易于硬件实现。
A new method of sampling the complementary code pairs separately and compensating for the time adjustment of the complementary code pairs is introduced. Doppler phase shift compensation is carried out on this radial high-speed moving target by this method. When the target radial velocity in the range of 1.75 ~ 3M, using the average primary sidelobe ratio increased from the original 16dB to 24dB. At different compensation times, the worst mainlobe ratio of radial moving targets in the above speed range can reach 22dB. This method has no influence on low Doppler frequency shift target detection performance and is easy to realize in hardware.