论文部分内容阅读
研制的激光雷达电视跟踪系统,采用脉冲激光测距结合圆光栅测角的方法,测定下落目标相对于测试点的斜距离、水平角和俯仰角的时间序列值;采用同步电视跟踪技术记录对应时刻的目标图像,根据目标图像相对于视场中心的位置,对光栅码盘的水平角和俯仰角读数进行中心修正,并对缺失的距离数据用插值方法弥补,最后,通过最小二乘拟合方法可获得目标的运动轨迹方程,从而给出目标在运动过程中任意时刻的下落速度。该激光雷达电视跟踪系统已多次应用于野外空间非定域物体的落速测量,实现的速度测量精度优于0.5m/s,在标准天候条件下对典型目标的作用距离不小于8km。
The developed laser radar television tracking system uses the pulse laser ranging combined with the method of round grating angle measurement to determine the time series value of the falling target, horizontal angle and pitch angle of the falling target relative to the test point. The synchronous television tracking technology is used to record the corresponding time Of the target image, centering on the horizontal and the elevation readings of the grating coder according to the position of the target image with respect to the center of the field, and compensating for the missing distance data by the interpolation method. Finally, the least square fitting method Can get the goal of the trajectory equation, which gives the target at any time during the movement speed. The Lidar TV tracking system has been applied to the drop velocity measurement of unsteady objects in the field for many times. The accuracy of velocity measurement is better than 0.5m / s, and the range of the typical target is not less than 8km under standard weather conditions.