激光角度欺骗假目标干扰空域评估技术研究

针对目前激光角度欺骗干扰效果评估中存在的实时性差、可视化程度不高等问题，构建了激光角度欺骗假目标干扰空域评估系统。首先依据透视投影原理求解漫反射板假目标的距离及姿态参数，然后通过分析漫反射板假目标的干扰机理，以干扰距离为基础，推导出了漫反射板假目标干扰空域评估模型，最后依托系统设计了相关实验。实验中，分别对相对设备0°、120°和240°三个方向上布设的漫反射板用不同功率激光进行照射，然后用评估系统设备对三个漫反射板进行参数测量，最终得到系统接收的能量密度平均值分别2.70×10?13 J/mm2, 2.17×10?13 J/mm2和4.08×10?13 J/mm2，通过假目标干扰空域评估模型计算出在45°威胁角下的干扰最大距离分别为2045.6 m、1860.4 m和2470.0 m。最终分析了干扰空域大小与武器威胁角的关系，得到在20°、45°和70°威胁角下的假目标干扰空域的态势图。实验结果表明:在实验条件下，漫反射板假目标的干扰空域范围随系统接收能量增大而增大；武器来袭方向与漫反射板法线方向夹角越小，漫反射板假目标的干扰空域越大。以干扰距离作为评价指标，对漫反射板假目标干扰空域进行评估，可为假目标干扰效果评估提供技术支持。

Research on the technique of interference airspace evaluation of laser angle deception false targets

Aiming at the problems of lack of instantaneity and low visualization in laser angle deception interference evaluation, the evaluation system for the airspace interference of false targets of laser angle deception interference was constructed. Firstly, the distance and attitude parameters of the false target of the diffuse reflector were calculated according to the principle of perspective projection, and then the interference mechanism of the false target of the diffuse reflector was analyzed and based on the interference distance, the airspace evaluation model of the false target interference of the diffuse reflector was derived. Finally, experiments were designed relied on the system. In the experiment, the diffuse reflector installed in the direction of 0°, 120° and 240° of the equipment was irradiated by lasers with different powers. Then the evaluation system equipment was used to measure the parameters of the three diffuse reflectors, and the average energy density received by the system were 2.70×10?13 J/mm2, 2.17×10?13 J/mm2 and 4.08×10?13 J/mm2 respectively. The maximum interference distance under 45° threat angle were 2045.6 m, 1860.4 m and 2470.0 m, respectively. Finally, the relationship between the size of the jamming airspace and the threat angle of the weapon was analyzed, and the situation maps of the interference airspace of the false target under the threat angles of 20°, 45° and 70° were obtained. The experimental results show that, under the experimental conditions, the interference airspace range of the false target increases with the increase of the energy received by the system. The smaller the angle between the attack direction of the weapon and the normal direction of the diffuse reflector, the greater the interference airspace. Taking the interference distance as the evaluation index, the interference airspace of the diffuse reflector false target is evaluated, which can provide technical support for the interference effect evaluation of false target.