Target location accuracy analysis on loitering missile platform北大核心CSCD

不同于普通弹药，巡飞弹能够在目标上空进行“巡弋飞行”，获取目标位置信息，并传送至指挥中心，用于战场态势分析及火力布局。受限于巡飞弹载机负载能力和成本要求，巡飞弹光电系统目标定位能力无法与大型无人机媲美。为提高巡飞弹目标定位精度，从巡飞弹目标定位的原理和流程出发，分析影响目标定位精度的误差源。在典型工况下，研究了卫星定位系统经度和纬度误差、惯性导航系统（INS）航向误差、测角误差和测距机测量误差等主要影响因素对目标定位精度的影响程度，可作为提升目标定位精度的设计依据。针对卫星定位系统经度和纬度误差对目标定位精度的影响结果，进行外场试验，验证上述分析结论。试验结果表明:当卫星定位系统经度和纬度精度由5 m提升至1 m时，目标定位的圆概率误差（CEP）下降约31.5%，与理论分析基本吻合。

Target location accuracy analysis on loitering missile platform

Different from the common missile, the loitering missile can cruise over the target to obtain the target location information and transmit it to the command center, which is used for battle-field situation analysis and optimum assignment of firepower. Limited by the load capacity and cost requirements, the target location ability of the loitering missile is not comparable to that of large unmanned aerial vehicle (UAV). In order to promote the target location accuracy of loitering missile, the error sources were analyzed from the principle and process of the target location of loitering missile. Under typical working condition, the influence degree of primary factors such as longitude and latitude errors of global positioning system, course errors of inertial navigation system (INS), angle measurement errors and ranging errors of rangefinder on target location accuracy were studied, which could be used as the design basis to promote the target location accuracy. According to the influence of longitude and latitude errors of global positioning system on target location accuracy, the outfield test was carried out to verify the above analysis conclusions. The results show that as the longitude and latitude accuracy of the global positioning system varies from 5 m to 1 m, the circular probable error (CEP) of target location reduces by about 31.5%, which is consistent with the theoretical analysis. © 2022 Editorial office of Journal of Applied Optics. All rights reserved.