公开(公告)号：US20030052817A1

公开(公告)日：2003-03-20

申请号：US10190745

申请日：2002-07-08

申请人： Global Locate, Inc.

发明人： Frank van Diggelen

IPC分类号： G01S005/14

CPC分类号： G01S19/42 ,  G01S5/0018 ,  G01S5/0036 ,  G01S19/09 ,  G01S19/11 ,  G01S19/256 ,  G01S19/258 ,  G01S2205/008

摘要： A method and apparatus for computing GPS receiver position without using absolute time information transmitted by the satellite or by an alternative source of timing available at the GPS receiver. The GPS receiver is contained in an integrated receiver that also includes a wireless communication transceiver, but does not have access to an accurate source of absolute time information. The wireless transceiver communicates through a wireless network to a server. The GPS receiver measures satellite pseudoranges and uses the wireless communication transceiver to send the pseudoranges to the server. The server fits the pseudoranges to a mathematical model in which the GPS receiver position and the absolute time are unknown parameters. The server then computes a position and absolute time that best fit the model, thus yielding the correct position for the GPS receiver, and the absolute time at which the pseudorange measurements were made.

摘要翻译： 一种用于计算GPS接收器位置的方法和装置，而不使用由卫星发送的绝对时间信息或GPS接收器可用的替代定时源。 GPS接收机包含在还包括无线通信收发器的集成接收机中，但是无法访问绝对时间信息的准确源。 无线收发器通过无线网络与服务器进行通信。 GPS接收机测量卫星伪距，并使用无线通信收发器将伪距发送到服务器。 服务器将伪距适配到数学模型，其中GPS接收机位置和绝对时间是未知参数。 然后，服务器计算最适合模型的位置和绝对时间，从而产生GPS接收机的正确位置，以及进行伪距测量的绝对时间。