针对高速微弱目标检测,传统包络移动补偿算法存在频谱泄漏,不利于在多目标环境下弱信号的检出。文中在分析高速目标回波包络走动及非整数采样误差对频谱泄漏影响的基础上,提出了一种改进的包络移动算法,利用采样误差补偿因子对发射信号进行相位补偿,然后利用频谱泄漏补偿速度周期对搜索速度进行分组,并完成包络移位对齐。仿真分析表明该方法克服了频谱泄漏,适合对多目标进行检测。

For high-speed weak targets, the traditional envelope migration compensation algorithm is not qualified for detection of weak signals in multi-target environment as spectrum leakage exists. An improved envelopment migration algorithm was presented in this paper, after analyzing the impact of echo envelope migration and non-integer sampling error for spectrum leakage, the phase of transmit signals was compensated by sampling error compensation factor. The velocity compensation cycle of spectrum leakage was used to group the compensation velocity and complete the envelope migration alignment. The simulation results show that this method is suitable for multi-target detection as it can overcome spectrum leakage.