Jammer mitigation with adaptive waveforms and use of EM-simulated targets in cognitive radar for target classification
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Authors
Tan, Qinling Jeanette Olivia
Subjects
cognitive radar
cognitive automotive radar
electronic warfare
waveform design
matched waveform
jammer
eigenwaveform
mutual information
target recognition
target detection
cognitive automotive radar
electronic warfare
waveform design
matched waveform
jammer
eigenwaveform
mutual information
target recognition
target detection
Advisors
Romero, Ric
Date of Issue
2019-03
Date
March 2019
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
Cognitive radar (CRr) is a knowledge-aided dynamic radar architecture where the operation of the receiver and transmitter is controlled adaptively through provision for feedback about the electromagnetic (EM) environment. Consequently, transmit waveform design using feedback from the CRr interactions with the environment is crucial to a closed-loop system’s performance. This work is divided into three sections. First, we investigate the classification performance of adaptive waveforms in CRr for deterministic and stochastic land or ground vehicle target response recognition. High-fidelity EM-simulated target responses are generated and utilized in our simulations. Second, we consider an aircraft target recognition problem in the presence of noise jammers and apply the CRr framework in an electronic warfare scenario. Jammer nulling transmit-adaptive waveforms are introduced as countermeasures to various types of noise jammers. Lastly, we propose a dual matched-filter discriminator (DMFD) scheme for coherent jammer suppression in an aircraft target detection scenario. The DMFD is also incorporated into a closed-loop CRr framework for integrated extended moving target detection and identification in an environment where false targets are produced by coherent jammers.
Type
Thesis
Description
Approved for public release; distribution is unlimited.
Series/Report No
Organization
Identifiers
NPS Report Number
Sponsors
Funder
RE239
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
Copyright is reserved by the copyright owner.