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基于小波变换的OTSDF滤波器优化设计

Optimization Design of OTSDF Filter Based on Wavelet Transform

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摘要

提出基于小波变换的优化折中综合鉴别函数(OTSDF)滤波器(W_OTSDF)算法,对其进行优化设计,利用小波变换的多尺度与带通滤波特性,提高平面集成2f光学相关器的相关输出峰值强度和信噪比(SNR)。利用Matlab搭建系统的仿真模型,获取W_OTSDF滤波器的优化算法。仿真结果表明,在平面集成2f系统中对旋转、缩放以及旋转缩放同时存在的畸变目标进行识别时,优化设计的W_OTSDF滤波器较OTSDF滤波器在峰值相关能量比(PCE)、峰值旁瓣比(PSR)、SNR等整体性能指标方面均有较大提高。理论分析与仿真结果均表明W_OTSDF滤波器较OTSDF滤波器具有更好的识别效果。

Abstract

In this paper, the algorithm of the optimal trade-off synthetic discrimination function (OTSDF) filter based on wavelet transform(W_OTSDF) is proposed. And the optimization design is carried out. The advantages of multi-scale analysis and the band-pass filtering features of wavelet transform are taken to improve the correlation output peak intensity and signal-to-noise ratio (SNR) in planar integrated 2f optical correlator. Using Matlab to build the simulation model of the system and get the optimization algorithm of W_OTSDF filter. The simulation results show that in planar integrated 2f system, when the distortion target with rotation, scaling or both of them are recognized, the performance indexes of peak to correlation energy (PCE), peak side-lobe ratio (PSR), and SNR of optimized W_OTSDF filter are all improved greatly, which is compared with OTSDF filter. The theoretical analysis and simulation results all demonstrate that the W_OTSDF filter has better recognition effect than OTSDF filter.

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中图分类号:TN201

DOI:10.3788/AOS201737.1123001

所属栏目:光学器件

基金项目:国家自然科学基金(61275167)、深圳市基础研究计划(JCYJ20140418095735591,JCYJ20130329103020637,JC200903120023A)

收稿日期:2017-05-10

修改稿日期:2017-06-01

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作者单位    点击查看

喻 珺:深圳大学电子科学与技术学院, 广东 深圳 518060深圳大学微纳光电子技术研究所, 广东 深圳 518060
徐 平:深圳大学电子科学与技术学院, 广东 深圳 518060深圳大学微纳光电子技术研究所, 广东 深圳 518060
杨 拓:深圳大学电子科学与技术学院, 广东 深圳 518060深圳大学微纳光电子技术研究所, 广东 深圳 518060
李雄超:深圳大学电子科学与技术学院, 广东 深圳 518060深圳大学微纳光电子技术研究所, 广东 深圳 518060
黄海漩:深圳大学电子科学与技术学院, 广东 深圳 518060深圳大学微纳光电子技术研究所, 广东 深圳 518060
程冠晓:深圳大学电子科学与技术学院, 广东 深圳 518060深圳大学微纳光电子技术研究所, 广东 深圳 518060

联系人作者:徐平(xuping@szu.edu.cn)

备注:喻 珺(1991-),女,硕士研究生,主要从事微纳光电子方面的研究。

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引用该论文

Yu Jun,Xu Ping,Yang Tuo,Li Xiongchao,Huang Haixuan,Cheng Guanxiao. Optimization Design of OTSDF Filter Based on Wavelet Transform[J]. Acta Optica Sinica, 2017, 37(11): 1123001

喻 珺,徐 平,杨 拓,李雄超,黄海漩,程冠晓. 基于小波变换的OTSDF滤波器优化设计[J]. 光学学报, 2017, 37(11): 1123001

被引情况

【1】张盼,张为. 多级离散小波变换的高效超大规模集成架构. 光学学报, 2019, 39(4): 412004--1

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