时间误差对预警机协同制导导弹的影响

Effects of Time Errors on Cooperative Guidance of AWACS

分析了预警机引导战斗机发射导弹并进行协同制导的过程及其中的时间同步误差和各环节的时间延迟特性;研究了时间误差造成的中制导段末端导弹散布误差、目标位置误差以及导引头指向误差,通过弹道仿真得到不同时间误差的弹目相对位置,计算不同时间误差条件下的导引头截获概率。计算结果表明,若目标未发现威胁并保持匀速运动,时间误差小于4 s时可使截获概率大于95%,满足顺利转入末制导的要求;若目标转弯或加速机动,时间误差需分别限制在3 s和0. 2 s,从而确定预警机协同交战时的时间精度要求。

The process of guiding the fighter to launch the missile and conducting the cooperative guidance of the AWACS was introduced,and the time synchronization error and time delay characteristics of each step were analyzed.The missile position error at the end of the mid-course guidance,the target position error and the resulting seeker pointing error were analyzed.The relative positions of missile and target with different time errors were obtained through trajectory simulation,and the seeker acquisition probability was calculated with different time errors.The results show that if the enemy aircraft does not detect the threat,the time error of 4 s can make the seeker acquisition probability greater than 95%,meeting the requirements of the handover from midcourse guidance to terminal guidance.If the target turns or maneuvers with a large acceleration,the time error needs to be limited to 3 s and 0.2 s respectively,which can provide time precision requirements for the cooperation engagement of the AWACS.