水下目标辐射平方频率动态耦合信号增强新算法  

A special method for retrieving underwater moving target-radiated square frequency dynamic coupling signals

作　　者：郭业才[1] 赵俊渭[2] 

机构地区：[1]安徽理工大学,安徽淮南232001 [2]西北工业大学,陕西西安710072

出　　处：《舰船科学技术》2003年第5期45-48,共4页Ship Science and Technology

基　　金：安徽省教育厅自然科学基金资助 (2 0 0 3KJ0 92 )

摘　　要：针对二次频率 (相位 )耦合的正弦随相信号的三阶累积量不为零值的特点 ,提出了用三阶累积量不同切片来增强水下运动目标辐射平方频率动态耦合信号的新算法并进行了仿真研究。结果表明 :该算法能从高斯噪声环境中有效地增强参加动态耦合的频率分量和动态耦合产生的频率分量 ;是提取频率动态耦合信号的有效手段。因此 。According to the feature that third-order cumualnt of sine random phase signal of quadratic phase coupling is nonzero,the conception of square phase dynamic coupling signals is defined and employing third-order cumulant slices can effectively enhance the underwater moving target-radiated square phase dynamic coupling signals. The simulation tests are dynamically carried out by the underwater moving target-radiated square phase dynamic coupling signals. The results show that the proposed algorithm is especially fit for retrieving underwater moving target-radiated square phase dynamic coupling signals in Gaussian noise.

关 键 词：水中目标 三阶累积量切片 平方相位动态耦合信号 直接自适应 增强算法 

分 类 号：TN911.6[电子电信—通信与信息系统]