非合作目标动态RCS特性的实时估计方法

A Real-time Estimation Method for Dynamic RCS Characteristics of Non-cooperative Targets

针对作战场景下非合作目标实时态势感知和目标识别的问题,提出了一种以雷达测量的目标航迹和信号强度信息为基准,实时估计和预测非合作目标飞行姿态的方法。通过计算雷达视线在目标坐标系内入射角度,结合定标的雷达状态参数,估计目标雷达截面(RCS)序列,形成与姿态相关的非合作目标动态RCS特性。利用飞行试验数据验证了算法的有效性,并分析了姿态估计存在滞后效应的原因。该方法可适用于所有雷达平台,应用于非合作目标的多维RCS特征样本库构建、目标识别和态势评估。

For the real-time situational awareness and target identification problem of non-cooperative targets in combat scenarios,this paper proposes a real-time estimation and prediction method of the target flight attitudes based on the target track and signal strength information measured by radar,evaluates the target radar cross section(RCS)sequence and achieves the dynamic RCS characteristics of non-cooperative targets related with the attitude through calculating the incidence angle of radar sight line in the target coordinate system and combining with the calibrated radar state parameters,uses flight test data to validate the algorithm effectiveness,and analyzes the reason that there is lag effect in attitude estimation.The method can be adapted to all radar platforms,and can be applied to a multi-dimensional RCS feature database construction,target recognition and situation assessment of non-cooperative targets.