Submitted on: 03 January 2012.
Revised on: 06 March 2012.
Accepted on: 17 March 2012.
___________________JOURNAL OF SURVEYING ENGINEERING
http://reply.papertrans.cn/2/195/19483/19483-32.png
Submitted on: 23 August 2013.
Revised on: 09 October 2013.
Accepted on: 14 November 2013.
___________________JOURNAL OF SURVEYING ENGINEERING
http://reply.papertrans.cn/2/195/19483/19483-34.png
http://reply.papertrans.cn/2/195/19483/19483-35.png
Submitted on: 14 August 2016.
Revised on: 01 October 2016.
Accepted on: 14 November 2016.
___________________JOURNAL OF SURVEYING ENGINEERING