NDLI: Evaluation of the covertness of time-hopping impulse radio using a multi-radiometer detection

Content Provider	IEEE Xplore Digital Library
Author	Bharadwaj, A. Townsend, J.K.
Copyright Year	2001
Description	Author affiliation: Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA (Bharadwaj, A.; Townsend, J.K.)
Abstract	Covert operation is an important requirement for military communications systems. Impulse radio is a promising ultra-wideband technique for tactical military communications. Using a simple, sub-optimal radiometer detection system, impulse radio has been shown previously to exhibit low probability of detection (LPD) compared to alternative systems. In this paper we quantitatively evaluate the covertness of impulse radio using a more complex radiometer detection scheme ideally suited for detection of time-hopping impulse radio signals. The more complex detection system that we consider utilizes multiple, wideband radiometers with outputs that are ORed and compared to a threshold. This "multi-radiometer" detection system is used to quantify covertness for single and multiple user configurations. We also evaluate covertness for cases where the detector incorporates varying amounts of prior knowledge about the impulse radio signals. The "average covertness" of impulse radio for a specified number of users is determined and then compared to DS-CDMA schemes with equivalent number of users.
Sponsorship	IEEE ComSoc AFCEA
Starting Page	128
Ending Page	134
File Size	1140306
Page Count	7
File Format	PDF
ISBN	0780372255
DOI	10.1109/MILCOM.2001.985776
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Radiometry Military communication Multiaccess communication Ultra wideband technology Receivers Statistics Contracts Narrowband Lapping
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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