m序列在激光测距雷达中的应用

Application of M-sequence in Laser Range Measuring Radar

针对激光远程测距中的微弱信号检测 ,提出了一种基于m序列的激光测距方法 ,并给出了基于高速数字信号处理器的激光测距雷达数字信号处理系统的实现方案。利用m序列良好的相关特性以及相关检测和相干积累技术 ,有效地提高了激光测距雷达的性能。还提出了 3点插值算法并将其用于目标距离估计 ,进一步提高激光雷达的测距精度。在外场试验中 ,得到良好的试验结果。

For the problem of weak signal detection in range measuring laser radar, a new method using m-sequence is proposed in this paper. The scheme of the radar signal process system based on high speed DSP is presented also. Using the excellent correlation property of m-sequence, correlative detection and accumulation algorithms, this method can effectively improve the performance of the laser radar. A technique named 3-point interpolation is proposed to enhance the range accuracy further. Finally, experimental results are provided to show validity of the method.