关于射频目标跟踪半实物仿真系统设计

Design of Hardware-in-Loop Simulation System for Radio Frequency Target Tracking

在雷达精确制导中,需要通过精确控制自动地把导弹引向目标。在研发测试过程中一般使用射频目标跟踪半实物仿真系统,通过控制天线阵馈电方案模拟目标位置,使三轴模拟转台控制导引头指向目标位置来测量精度。但是磨损等原因使得三轴模拟转台产生的机械误差和在天线阵设计过程中产生的计算误差都会对测试精度产生影响。根据以上提出了估算转台机械误差和天线阵计算误差对于制导系统精度影响的方法。转台误差的影响分析利用了多种坐标系转换,在计算误差的分析过程中使用了误差圆的概念,给出了计算误差对制导系统精度影响的分析方法。仿真结果表明,上述方法能够对使半实物仿真系统的测试精度进行较好优化,最终提高雷达制导精度。

In radar precision guidance system,it is necessary to put the missile towards the target automatically by precise control.Among the researches and developments,radio frequency hardware-in-loop simulation system（RFSS） is the preferred solution.This paper presented a way to estimate the error of calculation for precision guidance system impact.Transformation of coordinate systems was used to analyze the error of turntable,and the error circle concept was used in analyzing the error of calculation.By this way,a method of estimating the effect of the error of calculation was given.The simulation results show that the proposed method can improve the accuracy of the semiphysical simulation system of radar-guided test,and ultimately also improve the accuracy of radar guidance.