| 应用于超宽带呼吸检测的压缩感知算法研究 |
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| 引用本文： | 许会,任建,李邦宇,周春源,郭莹. 应用于超宽带呼吸检测的压缩感知算法研究[J]. 仪器仪表学报, 2015, 36(1) |
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| 作者姓名： | 许会 任建 李邦宇 周春源 郭莹 |
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| 作者单位： | 1. 沈阳工业大学先进在线检测技术省重点实验室 沈阳 110870
2. 沈阳新松机器人自动化股份有限公司 沈阳 110168 |
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| 基金项目： | 国家863计划，国家自然科学基金，辽宁省教育厅一般项目 |
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| 摘 要： | 超宽带雷达是最近生命探测采用的主要形式,绝对带宽不小于500 MHz的带宽对前端AD采样速率要求较高。针对超宽带系统硬件成本很高有时甚至不能实现的系统搭建问题,论文提出自适应的压缩感知(CS)呼吸检测算法。根据压缩感知欠采样的特点,首次将CS原理应用在微多普勒呼吸频率检测中,对OMP和GPSR两种恢复算法进行了测试,最终采用了OMP检测算法,并设计了自适应观测字典。应用本方法采样率可以达到0.66,大大降低了前端采样压力,节约硬件实现成本,并提高了检测效率。
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| 关 键 词： | 超宽带步进变频雷达 呼吸检测 压缩感知 自适应检测矩阵 |
Research on compressed sensing applied to UWB respiratory detection |
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| Xu Hui,Ren Jian,Li Bangyu,Zhou Chunyuan,Guo Ying. Research on compressed sensing applied to UWB respiratory detection[J]. Chinese Journal of Scientific Instrument, 2015, 36(1) |
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| Authors: | Xu Hui Ren Jian Li Bangyu Zhou Chunyuan Guo Ying |
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| Abstract: | Ultra-wideband (UWB) radar is the main form of the recently adopted life detection, but AD of fore-end absolute bandwidth of not less than 500 MHz requires a higher sampling rate. Self-adaptive compressed sensing (CS) breath detection algorithm is proposed to address the high UWB hardware cost and failure of implement sometimes. According to the characteristics of under-sampling of compressed sensing, CS principle is firstly applied in the micro-Doppler respiratory frequency detection. OMP and GPSR recovery algorithms are tested and the OMP is finally chosen with the design of self-adaptive observation dictionary. The sampling rate is reduced to 0.66 with the method, which can greatly reduce the fore-end sampling pressure, save hardware cost of implement, and improve detection efficiency. |
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| Keywords: | ultra-wide bandwidth stepped frequency radar respiratory detection compressed sensing adaptive detection matrix |
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