Theory and performance of a matched-filter doppler direction-finding system
Abstract
A new radio direction-finding (DF) technique which applies matched-filter theory to the DF problem is presented. The new technique, called Matched-Filter Doppler Direction Finding (MFD DF) is based on the doppler DF principle in which a rotating antenna, or its equivalent, superimposes periodic frequency modulation on the received carrier. The phase of the induced modulation contains information on the angle of arrival. It is shown that a bandpass filtering operation, which satisfies the phase-matching requirement of a matched filter, converts the frequency-modulated signal to an amplitude-modulated signal whose envelope is a periodic narrow pulse with no sidelobes. The relative time of occurrence of the pulse is a measure of angle of arrival. Included is the description of and results obtained with an experimental system used to confirm the analytical results, to study the effects of noise, and to explore alternatives available in the design of an operating system. Encouraging results were obtained using this same experimental system with a conventional operating doppler DF set. (Author)
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.NPS Report Number
NPS-52MV70091ARelated items
Showing items related by title, author, creator and subject.
-
Comparing human target detection with multidimensional matched filtering methods
Krebs, W.K.; Scribner, D.A.; McCarley, J.S.; Ogawa, J.S.; Sinai, M.J. (RTO MP-45, 1999-06);Recent technological advances in sensor manufacturing enable the use of separate spectral bands; e.g., MWIR and LWIR, to generate spatially registered imagery. Human factors experiments can be used to test whether a ... -
Open architecture as an enabler for FORCEnet
Deering, Viviane; Grates, Patrick; Hedge, Tom; Kung, Sein; Martinez, Maria; Mcarthy, Percival; Pugh, Kevin; Radojkovic, Sasha (Monterey, California. Naval Postgraduate School, 2006-09); NPS-SE-06-002This project concentrates on implementing network centric military operations with specific threat engagement scenarios using legacy and future warfare systems based on open architecture concepts. These systems may be ... -
A comparison of high-latitude ionosphere propagation predicitions from AMBCOM with measured data
Wilson, David J. (Monterey, California. Naval Postgraduate School, 1991-03);This thesis examines the performance of SRI's Ambient Communications (AMBCOM) model for high latitude propagation prediction. It is one in a series of studies, conducted at the Naval Postgraduate School, to establish the ...