%0 Journal Article
%T STUDY OF PSEUDOLITES OPTIMIZATION MODEL IN GNSS/PSEUDOLITES NAVIGATION AND POSITIONING<br>GNSS/Pseudolites导航定位中的伪卫星优化模型研究
%A Jiang Kun
%A Wang Jian
%A Liu Chao
%A <br>姜昆
%A 王坚
%A 刘超
%J 大地测量与地球动力学
%D 2012
%I 
%X 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.
%K internal reliability
%K PDOP(position dilution of precision)
%K GNSS/PLs combination system
%K network optimization
%K comprehensive evaluation system<br>内部可靠性
%K 绝对定位精度因子
%K GNSS/PLs组合定位
%K 网形优化
%K 综合评价体系
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=DA72A78627FE64EAA572951EA05D274A&jid=73A1A428591E600EF664B596512A2997&aid=28538CA98C3000781096D1A0A2581802&yid=99E9153A83D4CB11&vid=9971A5E270697F23&iid=0B39A22176CE99FB&sid=03A030BB0C519C60&eid=09E495F616948E78&journal_id=1671-5942&journal_name=大地测量与地球动力学&referenced_num=0&reference_num=0