| 多次观测信号检测的最优量化 |
| |
| 引用本文： | 王瑛,邹芳,王飞雪,孙广富. 多次观测信号检测的最优量化[J]. 电子学报, 2008, 36(3): 575-580 |
| |
| 作者姓名： | 王瑛 邹芳 王飞雪 孙广富 |
| |
| 作者单位： | 国防科技大学电子科学与工程学院,湖南长沙,410073;西安武警工程学院通信工程系,陕西西安,710086 |
| |
| 基金项目： | 新世纪优秀人才支持计划(No.NCET-04-0995) |
| |
| 摘 要： | 信号检测的最优量化是降低实现复杂度的重要手段.在有限精度量化前提下,本文推导了多次观测信号检测的检测性能(检测概率和虚警概率),并证明了实际信号环境中多次观测积累值是最佳统计量.文中进一步提出了基于遗传算法的最优量化设计方法,可方便地优化等效检测能力因子等各种检测性能指标,离线设计最优量化参数.以红外弱小目标检测多帧图像预积累为例,最优量化设计可将量化比特数由通常的8~14比特减少到2~4比特,有效降低图像处理实现复杂度.
|
| 关 键 词： | 信号检测 最优量化 积累 遗传算法 |
| 文章编号： | 0372-2112(2008)03-0575-06 |
| 修稿时间： | 2006-07-11 |
Optimum Quantization for Multi-Observation Signal Detection |
| |
| WANG Ying,ZOU Fang,WANG Fei-xue,SUN Guang-fu. Optimum Quantization for Multi-Observation Signal Detection[J]. Acta Electronica Sinica, 2008, 36(3): 575-580 |
| |
| Authors: | WANG Ying ZOU Fang WANG Fei-xue SUN Guang-fu |
| |
| Affiliation: | 1. School of Electronic Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China;2. Department of Communication Engineering,College of Armed Police Force,Xi’an,Shaanxi 710086,China |
| |
| Abstract: | Optimum quantization for signal detection can effectively reduce the complexity of realization.Considering finite precision quantization,we analyze the performance of multi-observation signal detection,and prove that multi-observation accumulation is the optimum statistic in real-world signal environments.Furthermore,we propose a novel approach based on genetic algorithm to design optimum quantizers offline,which optimize figures of merit for signal detection such as the equivalent detectability factor.The ... |
| |
| Keywords: | signal detection optimum quantization accumulation genetic algorithm |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子学报》浏览原始摘要信息 |
|
点击此处可从《电子学报》下载免费的PDF全文 |
|
