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空中目标的运动模式与自身姿态紧密相关,进而与目标特征信号也存在相关性.首先分析不同运动模式下目标姿态角变化率,然后推导姿态敏感雷达特征信号表示,包括雷达散射截面(RCS)、角闪烁线偏差与横向分辨多普勒像,接着以两散射点组成的简单目标为例,推导得到了上述特征信号与目标姿态角变化率之间的关系式,从而建立了目标特征信号与运动模式之间的联系,最后通过对多散射点复杂目标特征信号的仿真验证了理论分析的正确性,结果表明利用雷达特征信号区分目标不同运动模式是可行的,所得结论对基于特征信号的运动模式辨识、机动检测以及机动目标跟踪和拦截等研究具有重要意义.
The motion pattern of airborne target is closely related to its own attitude and further to the target feature signal.Firstly, the rate of change of target attitude angle under different motion modes is analyzed, and then the signal characteristics of attitude-sensitive radar signature are derived, including radar cross section (RCS) Angular flicker line deviation and transverse resolution Doppler image, and then taking the simple target consisting of two scattering points as an example, the relation between the characteristic signal and the rate of change of the target attitude angle is deduced, so that the target characteristic signal and the movement Finally, the correctness of the theoretical analysis is verified by simulating the multi-scatterers complex target signals. The results show that it is feasible to distinguish the target’s different motion modes by using the radar signal, and the conclusions are valid for the motion patterns based on the feature signals Identification, maneuvering detection and maneuvering target tracking and interception are of great significance.