传感技术学报
傳感技術學報
전감기술학보
Journal of Transduction Technology
2013年
10期
1446-1452
,共7页
吕方旭%张金成%石洪君%王泉%王钰
呂方旭%張金成%石洪君%王泉%王鈺
려방욱%장금성%석홍군%왕천%왕옥
无线传感器网络%压缩感知%随机压缩采样%分布式压缩感知
無線傳感器網絡%壓縮感知%隨機壓縮採樣%分佈式壓縮感知
무선전감기망락%압축감지%수궤압축채양%분포식압축감지
wireless sensor network%compressive sensing%randomly compressive sampling%distributed compressive
为了解决传统的压缩感知算法在无线传感器网络中实现的难题,首先研究了用定时器控制ADC进行随机压缩采样的压缩感知技术,实验表明,该方法有效可行。在此基础上提出了基于无线传感器网络的分布式压缩感知算法。该算法通过对随机压缩采样序列的拆分实现分布式压缩采样,最后利用合并后的采样值和CoSaMP算法完成对信号的重构。仿真和实验表明,该方法能够在星型网络拓扑中实现以1/10的标准采样频率下实现信号的重构。
為瞭解決傳統的壓縮感知算法在無線傳感器網絡中實現的難題,首先研究瞭用定時器控製ADC進行隨機壓縮採樣的壓縮感知技術,實驗錶明,該方法有效可行。在此基礎上提齣瞭基于無線傳感器網絡的分佈式壓縮感知算法。該算法通過對隨機壓縮採樣序列的拆分實現分佈式壓縮採樣,最後利用閤併後的採樣值和CoSaMP算法完成對信號的重構。倣真和實驗錶明,該方法能夠在星型網絡拓撲中實現以1/10的標準採樣頻率下實現信號的重構。
위료해결전통적압축감지산법재무선전감기망락중실현적난제,수선연구료용정시기공제ADC진행수궤압축채양적압축감지기술,실험표명,해방법유효가행。재차기출상제출료기우무선전감기망락적분포식압축감지산법。해산법통과대수궤압축채양서렬적탁분실현분포식압축채양,최후이용합병후적채양치화CoSaMP산법완성대신호적중구。방진화실험표명,해방법능구재성형망락탁복중실현이1/10적표준채양빈솔하실현신호적중구。
In order to solve the problem of sampling with Compressive Sensing ( CS ) in Wireless Sensor Network ( WSN) ,the method of Randomly Compressive Sampling is studied,which uses Timer to control Analogy to Digital Converter. The experimental results show that the method is effective and feasible. On the basis of this, a new algorithm of Distributed Compressive Sensing in WSN is proposed, which realizes Distributed Compressive Sampling through distributing the random sequence. Then the algorithm of CoSaMP was used to reconstruct original signal with the joined sampling values. Simulation and experiment show that the proposed method can achieve analogy signal collection with a sampling frequency below 1/10 percentage of standard sampling frequency in a star network topology.