基于压缩感知的农田温度信息处理Field Temperature Information Processing Based on Compressed Sensing
焦俊;王强;范国华;王超;古冉;辜丽川;
摘要(Abstract):
由于农田温度信息在离散余弦基(DCT)下的近似稀疏性,采用压缩感知(CS)技术对每块农田温度信息进行压缩和重构,即将温度信息投影到随机高斯观测矩阵,在接收端通过OMP算法重构出每块农田的温度信息。仿真试验结果表明,在较为稳定的网络环境中,CS算法能够以较少的观测值实现对原始信号的精确重建,降低节点能耗,延长网络生命周期。
关键词(KeyWords): 压缩感知;离散余弦变换;正交匹配追踪算法;农田温度
基金项目(Foundation): 安徽省教育厅自然基金资助项目(KJ2014A074);安徽省教育厅质量工程项目(2014tszy090,2014jyxm091);; 安徽农业大学博士启动基金资助项目
作者(Author): 焦俊;王强;范国华;王超;古冉;辜丽川;
Email:
DOI: 10.13989/j.cnki.0517-6611.2015.29.119
参考文献(References):
- [1]JIAO J,MA H M,QIAO Y,et al.Design of farm environmental monitoring system based on the internet of things[J].Advance journal of food science and technology,2014,6(3):368-373.
- [2]焦俊,张水明,杜玉林,等.物联网技术在农田环境监测中的应用[J].中国农学通报,2014,30(20):290-295.
- [3]焦俊,操俊,潘中,等.基于物联网的农田环境在线监测系统[J].农业工程,2014,4(6):18-23.
- [4]QUER G,MASIERO R,PILLONETTO G,et al.Sensing,compression and recovery for WSNs:Sparse signal modeling and monitoring framework[J].IEEE transactions on wireless communications,2012,11(10):3447-3461.
- [5]FORNASIER M,RAUHUT H.Compressive sensing[M]//Chapter in Part2 of the Handbook of Mathematical Methods in Imaging Springer,2011.
- [6]CANTLES E,TAO T.Near-optimal signal recovery from random projections and universal encoding strategies[J].IEEE transactions on information theory,2006,52(12):5406-5425.
- [7]张金成,吕方旭,王针,等.WSNs中的分簇式压缩感知[J].仪器仪表学报,2014,35(1):169-177.
- [8]PATWARIi N,WILSON J.Rf sensor networks for device-free localization:Measurements,models,and algorithms[J].Proceedings of the IEEE,2010,98(11):1961-1973.
- [9]SIGG S,SCHOL M.Rf-sensing of activities from non-cooperative subjects in device-free recognition systems using ambient and local signals[J].IEEE transactions on mobile computing,2014,13(4):907-920.
- [10]CANDES E,ROMBERG T,TAO T.Stable signal recovery from incomplete and inaccurate measurements[J].Communications on pure and applied mathematics,2006,5998:1207-12233.
- [11]BARANIUK R.Compressive sensing[J].IEEE signal processing magazine,2007,24(4):118-121.
- [12]ABOUTORAB N,HARDJAWANA W,VUCCTIC B.Application of compressive sensing to channel estimation of high mobility OFDM systems[C]//ICC 2013.Budapest,Hungary,IEEE,2013:4946-4950.