倒车雷达测距算法的研究

Research on Ranging Algorithm of Reverse Sensors

在泊车中通常有多个障碍物或外形特殊的障碍物,而采用传统倒车雷达的单发单收直线计算方法时测距误差很大,且不能确定障碍物方位。本文针对该问题提出一种单发多收联合三角函数算法的测距方法,通过此方法得到障碍物到车尾的垂直距离,明显提高了探测精准度。同时提出建立点坐标矩阵数据库、通过查表方式快速定位,大大减少运算量,提高雷达响应灵敏度。同时可以确定障碍物的水平方位,实现障碍物虚拟可视化。

Multiple obstacles or special shape obstacles exists in the parking, while the traditional single shot single receive linear distance calculation method is inaccurate and can not probe the position. This paper presents a distance measurement method that combine single shot multiple receive with trigonometric to get the target distance. And it improves the detection accuracy obviously. Besides, the paper proposed the establishment of a dot matrix database, which can quickly locate by querying forms, and reduce the calculation to enhance response sensitivity. Also it can probe horizontal orientation of the obstacle, and to realize virtual visual obstructions.