http://reply.papertrans.cn/2/118/11787/11787-31.png
http://reply.papertrans.cn/2/118/11787/11787-32.png
http://reply.papertrans.cn/2/118/11787/11787-33.png
Submitted on: 18 June 2011.
Revised on: 30 August 2011.
Accepted on: 16 October 2011.
___________________IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE
http://reply.papertrans.cn/2/118/11787/11787-35.png
Submitted on: 29 January 2000.
Revised on: 25 May 2000.
Accepted on: 22 July 2000.
___________________IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE