论文部分内容阅读
本文给出了一种新的准最优制导规律,它采用有相位超前补偿的比例导引法。制导增益、相位超前和最大相位超前量出现时的频率是根据导弹和目标的动态延迟来确定的。准最优制导规律的实现除了需要视线速率外不需要其它任何信息。为了验证准最优制导规律的性能是良好的,采用了线性寻的系统和真实的非线性寻的系统进行了仿真研究,将准最优制导规律的性能与古典比例导引法的性能做了比较,获得了如下的一些结果:1) 在线性寻的系统中当存在发射误差或目标做等加速运动时,为使脱靶量达到设计要求,准最优制导规律的最小剩余时间与比例导引法相比可以减小一半。2) 准最优制导规律产生的加速度值小于或等于比例导引法的加速度值。3) 准最优制导规律由于采用相位超前补偿,它对测量噪声的敏感性要比比例导引法高。因此设计者根据测量噪声情况必须精心设计噪声滤波器。4) 真实的非线性寻的系统仿真结果与线性的寻的系统伤真结果性能是相同的。通过结果比较可以得出结论,准最优制导规律用于对付高机动目标是一种很有效的制导规律。
In this paper, a new quasi-optimal guidance law is given, which uses proportional guidance with phase lead compensation. The frequencies at which the guidance gain, phase lead, and maximum phase lead occur are based on the dynamic delays of the missile and the target. The realization of the quasi-optimal guidance law does not need any other information besides the line-of-sight rate. In order to verify the performance of the quasi-optimal guidance law is good, the system of linear search and the real nonlinear searching system are used to simulate the performance of the quasi-optimal guidance law and the performance of the classical proportional guidance method The results are as follows: 1) In the system of linear search, when there is emission error or the target is accelerating, in order to make the miss distance meet the design requirements, the minimum residual time and proportional guidance of the quasi-optimal guidance law Compared to the law can be reduced by half. 2) The value of the acceleration generated by the quasi-optimal guidance law is less than or equal to the acceleration of the proportional guidance method. 3) Quasi-optimal guidance law Because of the phase advance compensation, it is more sensitive to measurement noise than the proportional guidance method. Therefore, the designer must carefully design the noise filter according to the measurement noise situation. 4) The real non-linear system simulation results are the same as the linear system performance test results. Through the comparison of the results, it can be concluded that the quasi-optimal guidance law is a very effective guidance law for dealing with high maneuvering targets.