基于去卷积距离超分辨方法的机理及限制条件.pdfVIP

22 3 Systems Engineering and Electronics Vol22,No3 2000 :1001506X( 2000 倪晋麟 储晓彬 林幼权 南京电子技术研究所, 210013 从频谱均衡的角度解释了去卷积方法能获得距离超 辨性能的原理结果表明超 辨的原理在于 利用了3d 带宽以外的频率 量经过均衡以后,3d 带宽以外的所有频谱 量的幅度将会相同, 即信号的带宽得 到了外推, 从而 辨率得到提高 析了实际系统对该方法性能所产生的可能限制去卷积方法能否在系统中应 用需视系统的具体情况而定, 如采样率噪声模型及多普勒频移等 距离测量 辨率 性能 析 + 去卷积 :TN95751 The Principle and Limitation of the Range Super- Resolution Algorithms Based on Deconvolution Ni Jinlin Chu Xiaobin Lin Youquan Nanj ing Research Institute of Electronics Technology, 210013 Abstract From the spectrum equalization point of view, thiswork explains the principle of the range super- resolution algo rithms based on deconvolution andgives the limitation of the algorithms. The principle of super- resolution based on deconvolution is to utilize the spectral componentsbeyond 3d bandwidth. After equlization is applied, all the spectral components have the same am plitutes and the bandwidth is extrapolated. It depends onmany factorswhether the algorithmsare efficient, such assampling rate, re ceiver noise model, Doppler frequency shift etc. Keywords Deconvolution Super- resolution Performance limitation M s( t) = f p ( t 2t ) 1 n n n= 1 x ct , n n [1] c! !! , , , ,, 20 60 , ,