Pulse or digital communications – Receivers – Angle modulation
Patent
1997-11-28
2000-10-24
Chin, Stephen
Pulse or digital communications
Receivers
Angle modulation
375272, 342450, 455456, H03D 300
Patent
active
061378429
ABSTRACT:
A system determines the time difference of arrival of a frequency shift kd signal (FSK) source at two separate receiver sites. The system includes a first receiver located at a first site for generating a first series of signal samples in response to detecting an FSK signal from a FSK signal source. A second receiver located at a second site generates a second series of signal samples in response to detecting the FSK signal. A first computer estimates first frequency shift times of the FSK signal in response to receiving the first series of signal samples and a time reference signal, and generates a first output signal representing the first frequency shift times. A second computer estimates second frequency shift times of the FSK signal using the second series of signal samples and time reference signal, and determines the path difference between the FSK signal source and each of the first and second receivers using the first output signal containing the first frequency shift times, and the second frequency shift times. The invention obviates the need for providing a replica of the first signal samples to the second computer.
REFERENCES:
patent: 3846708 (1974-11-01), Franco
patent: 4087816 (1978-05-01), Barszczewski et al.
patent: 4433422 (1984-02-01), Kurth
patent: 4445118 (1984-04-01), Taylor et al.
patent: 4631543 (1986-12-01), Brodeur
patent: 4694453 (1987-09-01), Kobayashi et al.
patent: 4860001 (1989-08-01), Yamanaka et al.
patent: 5025457 (1991-06-01), Ahmed
patent: 5361398 (1994-11-01), Christian et al.
patent: 5633895 (1997-05-01), Powell, II et al.
patent: 5724047 (1998-03-01), Lioio et al.
patent: 5781588 (1998-07-01), Abe et al.
patent: 5835530 (1998-11-01), Hawkes
Chin Stephen
Fan Chieh M.
Fendelman Harvey
Kagan Michael A.
Lipovsky Peter A.
LandOfFree
System and method for determining the time difference of arrival does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for determining the time difference of arrival, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for determining the time difference of arrival will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1972680