为增大步进频信号对多普勒效应的容忍度，文中对波形参数进行了优化设计。通过研究认为，对多普勒效应的容忍范围与脉冲重复周期之间存在强耦合关系，为增大容忍范围需要尽可能减小脉冲重复周期。为解决因减小重复周期而可能带来的距离模糊问题，提出了在频率上对发射端和接收端进行异步设置的处理技术，并且为了避免雷达作用范围内的盲区，提出了根据目标所在距离自适应设计信号波形参数的方法，此方法与处理技术特别适用于远程警戒雷达。

The optimal design of the stepped frequency waveform for increasing its Doppler tolerance is focused on. It is concluded that the Doppler tolerance is tightly coupled with the pulse repeating interval (PRI), so it is favorable to decrease the PRI in order to increase the tolerable Doppler shifting. It rearranges transmitting and receiving in frequency for resolving the possible range ambiguity, also it proposes adaptively tuning the waveform parameters according to the target location for avoiding the blind zones within the detectable range. The suggested design and technology can be applied to long distance guarding radar especially.

TN957