公开(公告)号：US06195042B1

公开(公告)日：2001-02-27

申请号：US09138658

申请日：1998-08-24

申请人： François Durnez ,  Jacques Bousquet

发明人： François Durnez ,  Jacques Bousquet

IPC分类号： G01B502

CPC分类号： G01S5/12 ,  G01S5/0018

摘要： A method of locating a fixed terminal of a telecommunication system comprising a constellation of satellites, a plurality of gateway stations and a plurality of fixed terminals includes “coarse”, “intermediate” and “fine” location phases. During the “intermediate” location phase, the terminal calculates at least three hyperboloids and their intersection, assuming a “coarse” estimated position of the terminal is known. Each hyperboloid can be written: Hi,j:dj−di=(tj′−tj).c−(ti′−ti).c where: di is the distance between the terminal and the position pi of the ith active satellite at time ti, dj is the distance between the terminal and the position pj of the jth active satellite at time tj, ti and tj are the ith and jth times of transmission by the ith and jth satellites, respectively, of ith and jth information relating to ti and di and to tj and dj, respectively, ti′ and tj′ are the ith and jth times of reception by the terminal of the ith and jth information, and c is the speed of light.

摘要翻译： 一种定位包括卫星星座，多个网关站和多个固定终端的电信系统的固定终端的方法包括“粗”，“中间”和“精细”定位阶段。在“中间”定位阶段 假设终端的“粗略”估计位置是已知的，终端计算出至少三个双曲面及其交点。 每个双曲面可以写成：其中：di是时间ti处第i个有效卫星的终端和位置pi之间的距离，dj是在时间tj，ti处的第j个活动卫星的终端和位置pj之间的距离， tj分别是第i和第j个卫星分别与ti和di以及tj和dj相关的第i和第j个信息的第i和第j个时间，ti'和tj'是第i和第j个接收时间 第i和第j个信息的终端，andc是光的速度。