一种用于LFMCW雷达距离跟踪的新方法

A New Method for Range Tracking in LFMCW Radar

线性调频连续波(LFMCW)雷达在理论上有很高的测距精度,可用于对目标的距离跟踪。然而,传统的距离跟踪方法分裂波门法和距离分段处理技术对硬件都有很高的要求,往往很难实现较高的测距精度。该文针对线性调频连续波回波信号的特点,对目标回波进行加窗FFT处理,再对多散射中心进行内插,对结果进行滤波变换,从而利用信号处理的方法实现了LFMCW雷达的距离跟踪算法,具有测距精度高、抗干扰能力强等优点。文中通过仿真验证了该方法的有效性。

The Linear Frequency Modulated Continuous Wave （LFMCW） Radar has high theoretical range precision and can be used for range tracking. However, the traditional methods for range tracking, such as split-gate range tracking method and range-segments processing technique, have some high requirements for hardware, which are difficult to accomplish. This paper designs and simulates the range tracking of the LFMCW radar with a new method of signal processing.