大地测量与地球动力学2012，Vol.32Issue(2)：134-138,142,6.
GNSS/Pseudolites导航定位中的伪卫星优化模型研究
STUDY OF PSEUDOLITES OPTIMIZATION MODEL IN GNSS/PSEUDOLITES NAVIGATION AND POSITIONING
摘要
Abstract
Aiming at optimal construction of pseudolites in GNSS/Pseudolites(PLs) combined system, this paper pointed out the necessity of PLs' joining in GNSS,and built a four-dimensional(4-D) model based on azimuth angel, elevation angel and observed epochs. Then, an experiment was taken to test the model, and the results show that the increasing number of visible satellites and the changing information of low-elevation satellites can enhance the reliability of the system and improve positioning accuracy. Panorama shows that variations of the PDOP value and the reliability value within the optimal region are similar but the distributions are different. The weight constrained by the PDOP, internal reliability, cost and other factors can be effective coordinate indexes for selecting optimal system and provide reliable basis for effectively solving the problem of locating PLs for GNSS/PLs optimization.关键词
内部可靠性/绝对定位精度因子/GNSS/PLs组合定位/网形优化/综合评价体系Key words
internal reliability/ PDOP ( position dilution of precision) / GNSS/PLs combination system/ network optimization/ comprehensive evaluation system分类
天文与地球科学引用本文复制引用
姜昆,王坚,刘超..GNSS/Pseudolites导航定位中的伪卫星优化模型研究[J].大地测量与地球动力学,2012,32(2):134-138,142,6.基金项目
国家自然科学基金青年基金(40904004) （40904004）
教育部博士点基金(新教师)(200802901516) （新教师）
教育部博士点基金(200802900501) （200802900501）
江苏省自然科学基金(BK2009099) （BK2009099）
江苏省普通高校研究生科研创新计划项目(CXLX11_0321) （CXLX11_0321）
江苏省"青蓝工程"资助项目 （）
江苏高校优势学科建设工程资助项目 （）
