DocumentCode :
1375967
Title :
Performance Characteristics and Metrics for Intra-Pulse Radar-Embedded Communication
Author :
Blunt, Shannon D. ; Metcalf, Justin G. ; Biggs, Casey R. ; Perrins, Erik
Author_Institution :
Electr. Eng. & Comput. Sci. Dept., Univ. of Kansas, Lawrence, KS, USA
Volume :
29
Issue :
10
fYear :
2011
fDate :
12/1/2011 12:00:00 AM
Firstpage :
2057
Lastpage :
2066
Abstract :
Low probability of intercept (LPI) communication generally relies on the presence of noise to obfuscate a covert signal through the use of spectral spreading or hopping. In contrast, this paper addresses the use of ambient interference from other man-made emissions as a means to mask the presence of covert communication. Specifically, the high power, wide bandwidth, and repeating structure of pulsed radar systems provide an advantageous framework within which to embed a communication signal. The operating paradigm considered here is that of an RF tag/transponder that is illuminated by the radar and intends to covertly communicate with the radar or some other desired receiver while being masked by the ambient radar backscatter to avoid detection by an intercept receiver. Communication takes place on an intra-pulse (or individual pulse) basis to maximize the data rate. The impact of multipath, and its exploitation using time reversal to achieve spatio-temporal focusing, is considered. The processing gain for the destination receiver and intercept receiver are derived analytically and subsequently used to optimize the parameterization of communication symbol design.
Keywords :
backscatter; radar; RF tag/transponder; communication signal; communication symbol design; covert communication; covert signal; intra-pulse radar-embedded communication; performance characteristics; pulsed radar systems; radar backscatter; spectral hopping; spectral spreading; Lighting; Military communication; Noise measurement; Radar scattering; Receivers; RFID tags; detectors; interference cancellation; military communication; radar clutter; spread spectrum communication; transponders;
fLanguage :
English
Journal_Title :
Selected Areas in Communications, IEEE Journal on
Publisher :
ieee
ISSN :
0733-8716
Type :
jour
DOI :
10.1109/JSAC.2011.111215
Filename :
6081358
Link To Document :
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