基于对称交互熵的ISAR干扰效果评估方法

Journal of Systems Engineering and Electronics ›› 2010, Vol. 32 ›› Issue (1): 119-121.

基于对称交互熵的ISAR干扰效果评估方法

史军军1，薛磊1,2，毕大平1,2

（1. 合肥电子工程学院，安徽合肥 230037；2. 安徽省电子制约技术重点实验室，安徽合肥 230037）

出版日期:2010-01-23 发布日期:2010-01-03

Evaluation method of jamming effects on ISAR based on symmetric cross entropy

SHI Jun-jun1，XUE Lei1,2，BI Da-ping1,2

(1. Hefei Electronic Engineering Inst., Hefei 230037, China; 2. Key Lab. of Electronic Restriction Technology of Anhui Province, Hefei 230037, China)

Online:2010-01-23 Published:2010-01-03

摘要/Abstract

摘要：

从信息论的角度出发，将交互熵引入到ISAR干扰效果评估中。针对其不满足对称性的不足，提出了对称交互熵的概念，并从理论上证明了对称交互熵是一种距离测度，从而建立了以对称交互熵为指标的评估模型。最后，针对射频噪声干扰和噪声调频干扰两种典型的压制性干扰样式进行了干扰仿真，并应用对称交互熵从定量的角度对ISAR压制性干扰效果进行了评估。得出的结论与定性评估一致，表明了该方法的有效性和可行性。

Abstract:

The cross entropy theory is utilized to evaluate the jamming effects on ISAR. The concept of symmetric cross entropy is presented to compensate the shortcoming of the cross entropy in meeting symmetry, and it is a kind of distance measure proved theoretically. Then, a new evaluation model is founded by using the symmetric cross entropy as an evaluation index. In the end, two typical noise blanket jamming modes, RF noise jamming and FM noise jamming, are employed in the jamming simulation of interference with ISAR, and the symmetric cross entropy is used to quantitatively evaluate jamming effects, and the result is consistent with that of qualitative evaluation. The result also shows that the proposed method is effective and feasible.

史军军1，薛磊1,2，毕大平1,2. 基于对称交互熵的ISAR干扰效果评估方法[J]. Journal of Systems Engineering and Electronics, 2010, 32(1): 119-121.

SHI Jun-jun1，XUE Lei1,2，BI Da-ping1,2. Evaluation method of jamming effects on ISAR based on symmetric cross entropy[J]. Journal of Systems Engineering and Electronics, 2010, 32(1): 119-121.