降低多路徑效應對GPS定位精度增益之研究

• Main Author: 黃德昌
• Other Authors: Jenn-Taur Lee
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/27282346035046706619

碩士 === 國防大學中正理工學院 === 軍事工程研究所 === 91 === In recent years, GPS positioning techniques have been greatly improved, but the positioning accuracy is however limited because of the related errors. For short baselines, the key problems may be focused on the multipath effects. In this research, the estimation of this error is expected to reduce its effect for the enhancement of current techniques either static or kinematics. In order to obtain the multipath errors on GPS L1 and L2 pseudorange data, an estimation method in TEQC software is firstly used for the investigation of multipath behavior in various operation environments. Secondly with those higher quality observations after the correcting or deleting process of the multipath estimated, the positioning accuracy is hopefully enhanced eventually. The results of this research have shown that the trials based on a deleting strategy of multipath processing may success, although the multipath estimation of TEQC method has been evaluated to be not so accurate finally. However, a further research of a more accurate method of multipath estimation and its evaluation are necessary in the future.