Title:
弱信号の位置検出のための可変コヒーレンス統合
Document Type and Number:
Japanese Patent JP2012500387
Kind Code:
A
Abstract:
In a network-based Wireless Location System (WLS), geographically distributed Location Measurement Units (LMUs) must be able to detect and use reverse channel (mobile to network) signals across multiple BTS coverage areas. By using Matched Replica correlation processing with the local and reference signals subdivided into discrete segments prior to correlation, the effects of mobile clock drift and Doppler shifts can be mitigated allowing for increased processing gain.
Inventors:
Referer, ronald
Mia, Rashidus S
Anderson, Robert Jay
Mia, Rashidus S
Anderson, Robert Jay
Application Number:
JP2011523057A
Publication Date:
January 05, 2012
Filing Date:
August 07, 2009
Export Citation:
Assignee:
True Position Incorporated
International Classes:
G01S5/04
Domestic Patent References:
| JP2009505463A | 2009-02-05 | |||
| JPH0545449A | 1993-02-23 |
Foreign References:
| WO2007017421A1 | 2007-02-15 |
Attorney, Agent or Firm:
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Motoharu Nakanishi
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Motoharu Nakanishi