雷达目标特征信号与运动模式的相关性研究  

Relationship between radar target signatures and motion modes

作　　者：祝依龙[1] 范红旗[1] 付强[1] 郭桂蓉[1] 

机构地区：[1]国防科学技术大学ATR重点实验室,长沙410073

出　　处：《中国科学：信息科学》2012年第7期907-922,共16页Scientia Sinica(Informationis)

基　　金：国家自然科学基金(批准号:61101186);国防科技重点实验室基金(批准号:9140C08005011009)资助项目

摘　　要：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.Aerial and ground targets motion modes have a close relationship with their pose angles, hence with radar signatures. An analysis on target pose angular rates under different motion modes is performed firstly. Expressions of radar signatures are then derived, including radar cross section （RCS）, angular glint errors, and high resolution Doppler profile. By taking a two-scatterer simple target as an example, we explore the relationship between the above signatures and target pose angular rates. The relationship between radar signatures and motion modes are then developed. Finally, the simulation results of radar signatures for multiple-scatterer complex target validate the theoretical analysis, and show that it is feasible to identify different motion modes based on radar signatures. The conclusions are significant for the research of motion mode identification, maneuver detection, and maneuvering target tracking and interception using radar signatures.

关 键 词：相关理论 特征信号 运动模式 姿态角 雷达散射截面 角闪烁线偏差 横向多普勒像雷达跟踪 机动性 

分 类 号：TN957.51[电子电信—信号与信息处理]