L
Lawrence Cohen
Researcher at United States Naval Research Laboratory
Publications - 47
Citations - 1007
Lawrence Cohen is an academic researcher from United States Naval Research Laboratory. The author has contributed to research in topics: Radar & Radar engineering details. The author has an hindex of 11, co-authored 47 publications receiving 817 citations. Previous affiliations of Lawrence Cohen include Baylor University.
Papers
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Journal ArticleDOI
Radar Spectrum Engineering and Management: Technical and Regulatory Issues
Hugh Griffiths,Lawrence Cohen,Simon Watts,Eric L. Mokole,Christopher J. Baker,Michael C. Wicks,Shannon D. Blunt +6 more
TL;DR: A number of possible approaches to the nature of the spectrum congestion problem from a radar perspective are described, and these include improved transmitter spectral purity, passive radar, and intelligent, cognitive approaches that dynamically optimize spectrum use.
Proceedings ArticleDOI
Challenge problems in spectrum engineering and waveform diversity
TL;DR: Some of the current challenges facing radar that result from continued spectral encroachment are described, which necessitating enhanced robustness to interference, agile waveform-diverse operation, and greater synergy between the signal processing and the physical radar/environment.
Journal ArticleDOI
Solving the Spectrum Crisis: Intelligent, Reconfigurable Microwave Transmitter Amplifiers for Cognitive Radar
TL;DR: In this paper, the authors discuss the spectrum sharing between radar and communications in the future and propose a spectrum sharing protocol for the future spectrum users, which is based on dynamic spectrum access (DSA).
Proceedings ArticleDOI
Electromagnetic interference to radar receivers due to in-band OFDM communications systems
TL;DR: In this paper, the performance degradation of radar system receivers from OFDM communication signals such as WiMAX and LTE was examined using a simulated S-Band long range weather radar and compared with the effectiveness of first order interference mitigation techniques, such as notch filtering.
Proceedings Article
Designing transmitters for spectral conformity: power amplifier design issues and strategies
Charles Baylis,Loria Wang,Matthew Moldovan,Joshua Martin,Hunter Miller,Lawrence Cohen,J. de Graaf +6 more
TL;DR: The methods of predistortion, feedforward, envelope tracking, Doherty and `linear amplification using non-linear components` are discussed and trade-offs and challenges inherent in these design approaches are surveyed.