用于混响中信号检测的空时预白化处理器  

Reverberation suppression via space time adaptive prewhiteners

作　　者：李维[1,2] 马晓川[1] 侯朝焕[1] 蔡宇[1] 杨晓光[1] 

机构地区：[1]中国科学院声学研究所,北京100190 [2]哈工大深圳研究生院,深圳518055

出　　处：《声学学报》2010年第1期53-58,共6页Acta Acustica

摘　　要：提出了一种新型的空时预白化处理器用于抑制混响,它是基于二维自回归模型的。这种处理器将接收到的数据从空间和时间上联合进行处理,进而分离目标回波和混响。这种方法较传统的从空间和时间上分别进行处理的方法能够更有效的抑制混响。通过与传统的一维自回归预白化处理器相比较,使用空时预白化处理器后的检测效果提高了约9～11 dB。This paper presents a novel space time adaptive prewhitener for reverberation based on a two-dimensional autoregressive model. The space time adaptive prewhitener jointly processes received data in angle and Doppler to improve the separation of a target from reverberation. It is more effective than the traditional methods which process data in angle and Doppler separately. The detector using the space time adaptive prewhitener is shown to yield a gain of 9 ～11 dB in detection than previously one dimension autoregressive prewhitener when operating in a reverberation background containing target echoes.

关 键 词：信号检测 处理器 预白化 混响 空时 自回归模型 目标回波 行处理 

分 类 号：TN911.23[电子电信—通信与信息系统]