Method and apparatus for enhancing the detection of the presence

Details Method and apparatus for enhancing the detection of the presence Method and apparatus for enhancing the detection of the presence

1996-11-04

1999-04-13

Urban, Edward F.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

455 63, 455214, H04B 106

Patent

active

058945938

ABSTRACT:
Enhanced detection of an FM signal is provided through the use of a coded pattern signal which is processed at a receiver (120) non-linearly to facilitate pattern detection. The received signal is conditioned to limit signal amplitudes according to a particular noise threshold (530, 540, 550). The conditioned signal is then processed to determine the presence of the coded pattern (560). In this manner, the probability of detecting signals in weak signal conditions can be enhanced, while maintaining a particular detection falsing rate.

REFERENCES:
patent: 5150377 (1992-09-01), Vannuchi
patent: 5448760 (1995-09-01), Frederick
patent: 5513184 (1996-04-01), Vannuchi
patent: 5555551 (1996-09-01), Rudokas et al.
patent: 5649304 (1997-07-01), Cabot
patent: 5706333 (1998-01-01), Grenning et al.

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