发明授权
US5600706A Method and system for determining the position of a mobile receiver
失效
用于确定移动接收机的位置的方法和系统
- 专利标题: Method and system for determining the position of a mobile receiver
- 专利标题(中): 用于确定移动接收机的位置的方法和系统
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申请号: US240070申请日: 1994-05-09
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公开(公告)号: US5600706A公开(公告)日: 1997-02-04
- 发明人: Michael J. Dunn , Don H. Atherly , Douglas O. J. Reudink , Martin J. Feuerstein , Ronald E. Foerster , Ching Chuang , Dino J. Vendetti
- 申请人: Michael J. Dunn , Don H. Atherly , Douglas O. J. Reudink , Martin J. Feuerstein , Ronald E. Foerster , Ching Chuang , Dino J. Vendetti
- 申请人地址: CO Englewood
- 专利权人: U S West, Inc.
- 当前专利权人: U S West, Inc.
- 当前专利权人地址: CO Englewood
- 主分类号: G01S5/10
- IPC分类号: G01S5/10 ; G01S5/14 ; G01S19/48 ; H04W4/02 ; H04W4/24 ; H04W60/00 ; H04W64/00 ; H04M11/00 ; G01S3/02 ; H04B7/185
摘要:
A position system and method utilizes a plurality of range transceivers located at known fixed locations and which are adapted to transmit approximately synchronized digital range signals for receipt by both a primary receiver and a supplemental receiver, the former disposed at a known location and the latter disposed at an unknown location. The range transceivers are adapted to transmit pulse sequences which include an error portion corresponding to the approximate synchronization error of each range signal. This error portion is constantly updated in accordance with the last determined synchronization errors of the corresponding range signals received by a secondary transceiver. In an alternative embodiment employing Code Division Multiple Access (CDMA) technology, the range transceiver time stamp on transmitted range signals may be adjusted to account for the measured timing error for a given range transceiver. The supplemental receiver receives the range signals and uses the same in accordance with known time of arrival or time difference of arrival calculation techniques to determine the position of the supplemental receiver.
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