摘要
为了提高无线传感器网络中稀疏事件的检测概率,利用压缩感知技术,提出了一种改进的下降迭代检测算法.该算法通过动态调节参数,改变迭代权值,加快了算法收敛速度.实验结果表明:在相同条件下,改进算法的成功检测概率比贝叶斯算法平均提高了13%.
In the wireless sensor networks,to improve detection probability,a modified descent iterative algorithm is proposed based on compressive sensing,which could adjust the parameter dynamically,and then change the value of weight.As a result,the speed of algorithm′s convergence can be accelerated.Experimental results show that,other things being equal,comparing with the bayesion algorithm,the detection probability of modified descent iterative algorithm is improved averagely by 13%.
出处
《中南民族大学学报(自然科学版)》
CAS
2011年第1期80-83,共4页
Journal of South-Central University for Nationalities:Natural Science Edition
基金
国家自然科学基金资助项目(61072075)
关键词
压缩感知
稀疏事件检测
无线传感器网络
compressive sensing
sparse event detection
wireless sensor networks