A simplified correlation technique for position location using earth satellites.To derive range to a moving vehicle for surveillance and navigation purposes, the phase delays in sets of sinusoidal tones may be measured using synchronous satellites for signal relay. When the number of users is large, problems of rapid acquisition and measurement occur in multiple-access systems. This paper describes the selection and processing of an orthogonal tone set which has several useful features. The paper also presents a simulation of a simplified digital technique for the noise-free case, as well as for a composite signal buried in wideband noise. The digital simulation is also modified to include the proposed 'hard limiting' or clipping technique.
Document ID
19720043709
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Martin, S. C.
Davies, W. D. T. (Bell Aerospace Co. Buffalo, N.Y., United States)
Date Acquired
August 6, 2013
Publication Date
April 1, 1972
Subject Category
Navigation
Report/Patent Number
AIAA PAPER 72-564
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Communications Satellite Systems Conference
Location: Washington, DC
Start Date: April 24, 1972
End Date: April 26, 1972
Sponsors: American Institute of Aeronautics and Astronautics