一种基于预滤波降噪处理的雷达距离超分辨新方法  

A Novel Method Based on Prefiltering for Super-Resolution in Radar Range

作　　者：刘晟[1] 向敬成[1] 

机构地区：[1]电子科技大学电子工程学院

出　　处：《信号处理》1999年第1期19-22,27,共5页Journal of Signal Processing

摘　　要：距离超分辨是指突破常规相关处理带宽限制的距离维高分辨技术，其实质归结为宽带源重叠回波时延高分辨问题。本文针对大时带积（ＴＢ）线性／非线性调频（ＬＦＭ ／ＮＬＦＭ）脉压信号，提出了一种有效的预滤波降噪处理新方法，并针对降噪残留噪声的统计特性，提出了有效的雷达距离超分辨处理方法。计算机模拟表明该方法可大大降低距离超分辨处理的信噪比（ＳＮＲ）门限．An novel denoising algorithm based on prefiltering for Linear Frequeency Modulation (LFM) signals with large time-bandwidth product(TB) is presented. Statistical characteristic of the rsidual noise is invstigated and an efficient method is suggested to achieve the range super-resolution estimation even at very low SNR Monte-Carlo experimnts illustrate the improved performance achieved by the proposed method.

关 键 词：距离超分辨 预滤 降噪处理 信号处理 雷达 

分 类 号：TN957.51[电子电信—信号与信息处理]