基于m序列信号的多普勒补偿方法

二相码信号广泛地应用于雷达系统,文中针对其对多普勒频率敏感的问题提出了一种补偿算法。该算法利用相邻回波的多普勒频率基本相等的特性对回波进行对消;其编码信号是伪随机序列,非常适合低截获概率特性的需求;该算法只集中在信号处理,在典型的全波形雷达上实现非常简单,理论上能对任意个数的动目标和任意高的多普勒频率进行精确补偿。

Doppler Compensation Method Based on m-sequence Signal

For binary phase-coded signal sensitive to Doppler frequence,a new compensation algorithm is introduced in this paper. The returns can be cancelled through the algorithm which utilizes the characteristics that neighbouring returns have approximately equal Doppler frequency.The algorithm is based on pseudorandom sequence(m-sequence) and suitable for the requirement of low intercept possibility characteristics.It only focuses on signal processing,so is easily implemented in typical all-waveform radar.Theoretically,an arbitrary number of moving targets and arbitrary Doppler frequency can be compensated accurately in the algorithm.