Abstract:

In an electro-optical countermeasure system， an infrared warning device is generally used to implement target guidance for the acquisition and tracking device. To scientifically evaluate the guidance capability of the equipment， this study initially establishes the transformation models of the target’s azimuth and elevation in the infrared warning coordinate system and the acquisition and tracking coordinate system. The calculation model of guidance error is determined by utilizing the law of error propagation. The calculation methods for the coordinate transformation parameters necessary for guidance error calculation are provided. Secondly， warning， guiding， and tracking information at multiple positions are set and generated. Subsequently， this information is utilized to solve the calculation parameters of guidance error， and the guidance errors at different airspace positions are calculated. Finally， the accuracy of the calculation results is analyzed， and the guidance capability is evaluated. The simulation results indicate that this method can analyze the guidance error of the target airspace through information from multiple positions， and the difference between the simulated error and the original error is less than 0.1°. This approach offers a feasible means for comprehensively evaluating the guidance capability of the equipment in different airspace ranges.

Key words: electro-optical countermeasure, infrared warning, target guidance, guidance error, guidance capability, coordinate transformation

摘要：

在光电对抗系统中，一般会用红外告警设备对捕获跟踪设备进行目标引导。为了科学评价装备的引导能力，建立目标方位、俯仰在红外告警坐标系及捕获跟踪坐标系统中的变换模型，利用误差传递规律确定引导误差计算模型；给出了引导误差计算所需坐标变换参数的计算方法。设置生成了多个位置上的告警、引导和跟踪信息，继而利用这些信息解算引导误差计算参数，仿真计算了不同空域位置上的引导误差，分析了计算结果的准确性，并评估引导能力。仿真结果表明，该方法可以通过多个位置的信息来分析目标空域的引导误差，误差仿真计算结果与原误差的差异小于0.1°。这种方法为全面评估装备在不同空域范围的引导能力提供了一种可行的手段。

关键词: 光电对抗, 红外告警, 目标引导, 引导误差, 引导能力, 坐标系变换