发明申请
- 专利标题： System and method for the mitigation of cdma cross-corrlation artifacts and the improvement of signal-to-noise ratios in tdma location networks
- 专利标题（中）： 用于减轻cdma交叉伪影的系统和方法以及tdma位置网络中信噪比的改善
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申请号： US10565874申请日： 2004-08-03
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公开(公告)号： US20070058591A1公开(公告)日： 2007-03-15
- 发明人: James Lamance , David Small
- 申请人： James Lamance , David Small
- 优先权： AU2003904045 20030804
- 国际申请： PCT/AU04/01025 WO 20040803
- 主分类号： H04B7/216
- IPC分类号： H04B7/216 ; H04B7/212
摘要：
A correlation system for Time Division Multiple Access (TDMA) positioning systems is disclosed, whereby a position receiver acquires, tracks, and demodulates a plurality of Code Division Multiple Access (CDMA) modulated positioning signals are pulsed in a Time Division Multiple Access (TDMA) scheme. A specialized correlation processor within the position receiver is configured to internally generate pseudo-random number (PRN) code signal replicas of Code Division Multiple Access (CDMA) positioning signals in synchronicity with their respectively received Time Division Multiple Access (TDMA) positioning signals. This correlation system provides the position receiver with range measurements free from the deleterious effects of Code Division Multiple Access (CDMA) cross-correlation artifacts and degraded signal-to-noise ratios, therefore allowing the computation of high accuracy position solutions.
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