Variable coherence integration for the location of weak signals

Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver

Reexamination Certificate

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Details

C455S456600, C455S456100, C455S556100, C342S165000, C342S173000, C340S515000

Reexamination Certificate

active

07924224

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.

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