Ambiguities in 3D target estimation for general radar measurements
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Authors
Garren, David Alan
Subjects
Advisors
Date of Issue
2017
Date
Publisher
Institution of Engineering and Technology
Language
Abstract
A recent analysis reveals that any attempt to estimate the underlying two-dimensional (2D) motion of a surface target via general bistatic synthetic aperture radar yields ambiguities, so that alternate target
trajectories can give the same measurement data. These ambiguities are of a continuous nature and
are fundamentally distinct from the discrete ambiguities that arise in pulse-Doppler moving target
indication radar. The current investigation relaxes the constraint that the mobile target lies on the surface of a ground plane, so that air targets with general 3D motion are considered. Specifically, the current paper develops methods for constructing alternate fictitious 3D target trajectory and speed profiles in time which yield identical radar measurements as that obtained from the true 3D target motion. These ambiguities are shown to remain even with the inclusion of bistatic range rate or Doppler measurements. Thus, the energy patterns of the radar transmission and reception beams determine the ability to localise and estimate the 3D target trajectory and speed profiles for general bistatic radar collections.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.1049/iet-rsn.2017.0063
Series/Report No
Department
Electrical and Computer Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Air Force Research Laboratory (AFRL)
Funder
Format
7 p.
Citation
D.A. Garren, "Ambiguities in 3D target motion estimation for general radar measurement," IET Radar, Sonar & Navigation, v. 11, iss. 10, (2017), pp. 1523-1529
Distribution Statement
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.