Results 241 to 250 of about 1,449,604 (285)
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Spread spectrum signals with low probability of chip rate detection
IEEE Journal on Selected Areas in Communications, 1989Spread spectrum signals are considered which use spreading codes chosen to give a low probability of chip rate detection. Pulse shaping and pseudorandom amplitude weighting are used to defeat the interceptor who uses a nonlinear circuit to generate a tone at the chip rate. It is shown that a combination of these techniques can, ideally, defeat any such
David E. Reed, Mark A. Wickert
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MILCOM 2013 - 2013 IEEE Military Communications Conference, 2013
Using radiometric detection, the detection threshold for a wideband radiometer (WR) to detect bursty signals e.g., transmission with duty cycle in frequency hopped systems is discussed in the paper. For this detector, the detection threshold is characterized by the probabilities of false alarm and detection, hopping bandwidth, duration of transmission,
Lan K. Nguyen +2 more
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Using radiometric detection, the detection threshold for a wideband radiometer (WR) to detect bursty signals e.g., transmission with duty cycle in frequency hopped systems is discussed in the paper. For this detector, the detection threshold is characterized by the probabilities of false alarm and detection, hopping bandwidth, duration of transmission,
Lan K. Nguyen +2 more
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Detection of low probability of intercept signals in low SNR using multichannel sensor arrays
2014 22nd Signal Processing and Communications Applications Conference (SIU), 2014In this paper, a method is proposed for the detection of low probability of intercept, LPI signals in high noise without prior knowledge and assumption using spatially distributed multichannel wideband sensor array. The proposed detection method uses eigenvalue ratios (EVR) of wideband spatial covariance matrix as test statistic.
Can Uysal, Tansu Filik
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A method and metric for quantitatively defining low probability of detection
IEEE Military Communications Conference. Proceedings. MILCOM 98 (Cat. No.98CH36201), 2002The lack of a low probability of detection (LPD) waveform is often cited as one of the criteria against the use of commercial off-the-shelf (COTS) communications systems in the tactical military environment. However, there is rarely any quantitative evidence given to support this understandable qualitative assertion.
G.D. Weeks +2 more
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Detection of multiple access low-probability-of-intercept networks
Proceedings of TCC'94 - Tactical Communications Conference, 2002Increased demands for highly connective, yet covert, communications in the tactical battlefield have fueled the development of so-called multiple access low-probability-of-intercept (MALPI) networks. Although there have been a number of research efforts regarding the design of MALPI networks, detectability analyses are typically carried out for a ...
R.F. Mills, G.E. Prescott
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Bounds for Low Probability of Detection for Underwater Acoustic Communication
IEEE Journal of Oceanic Engineering, 2016Most military underwater activities require stealth operations, and hydroacoustic transmissions might temper the mission. For this reason, military underwater acoustic transmission aims for low probability of detection (LPD). LPD communication systems are characterized by low transmission power and reception at low signal-to-noise power ratio (SNPR ...
Roee Diamant, Lutz Lampe, Emmett Gamroth
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Covert/Stealth/Low Probability of Detection Communications and QKD
2019This chapter is devoted to covert communications, also known as low probability of detection/intercept, as well as stealth communications, and how they can improve secret-key rate for QKD applications. The chapter starts with brief introduction to covert communications, followed by the description of their differences with respect to steganography. One
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Performance Analysis of Signal Pattern Reducing Techniques for Low Probability of Detection
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall), 2019Ad-hoc flexibly deployable networks destined for tactical military or civilian applications often suffer from poor synchronization which may lead to unreliable communication. Quasi-Synchronous (QS) CDMA employing Loosely Synchronous (LS) codes allows weak synchronization due to the Zero-Correlation Zone of the code's correlation functions.
Chryssalenia Koumpouzi +2 more
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Probability hypothesis density filter with low detection probability
IET Conference Proceedings, 2021M. Wu +5 more
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Opportunistic Power Control for Low Probability of Detection Communication
MILCOM 2022 - 2022 IEEE Military Communications Conference (MILCOM), 2022Kennedy A. Lee, John R. Barry
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