基于速度正反馈的船载雷达动态滞后补偿方法

Solution of compensating dynamic lag based-on positive velocity feedback for ship radar

船载雷达跟踪系统中,以复合控制减小跟踪动态滞后误差是一种常用手段,但使用存在限制,需提供跟踪目标的速度信息。本文提出一种基于速度正反馈的船载雷达动态滞后补偿方法。在没有速度信号的情况下,在速度环并联一个带低通滤波器的速度正反馈环节,高频误差分量被低通滤波器过滤,系统开环传递函数对数幅频特性的低频段有明显改善。通过实验验证,速度正反馈补偿法减小了船载雷达跟踪速度和加速度误差,显著提高了海上动态环境下雷达跟踪精度。

Compound control is a common method to reduce the tracking lag error for ship radar.However,the use is limited.The speed information of tracking target needs to provide.A new method of dynamic lag compensation based on positive velocity feedback for ship radar is proposed.In the absence of speed signals,the positive velocity feedback tracking link with low-pass filter is paralleled in the speed loop.The high frequency error component is filtered by the low-pass filter.The low frequency segment of the logarithmic amplitude frequency is improved obviously.Through the experiment,the new method based on positive velocity feedback reduces the speed error and acceleration error,and the radar tracking accuracy under marine dynamic environment is improved significantly.