| 基金项目： | Projects（40974006, 40774003） supported by the National Natural Science Foundation of China; Project（NCET-08-0570） supported by the Program for New Century Excellent Talents in Chinese Universities; Projects（2011JQ001, 2009QZZD004） supported by the Fundamental Research Funds for the Central Universities in China; Projects（09K005, 09K006） supported by the Key Laboratory for Precise Engineering Surveying ＆ Hazard Monitoring of Hunan Province, China; Project（1343-74334000023） supported by the Graduate Degree Thesis Innovation Foundation of Central South University, China |
