Results 171 to 180 of about 470,004 (218)

Low power FSK detection at low probability bit- errors

2008 International Conference on Electronic Design, 2008
For portable deep space communications applications where low power is a key requirement At the receiver, non coherent FSK quadrature detectors is suitable that enable to develop novel design and digitally implemented as VLSI circuits An important consideration in an FSK low power receiver is whether to use coherent detection or non coherent detection.
Hamood shehab, Widad Ismail, Mandeep Singh   +2 more
openaire   +1 more source

Low probability of detection for underwater acoustic communication

2014 Oceans - St. John's, 2014
The ability to avoid detection of a communication signal in the underwater acoustic channel is extremely important for underwater acoustic communication (UWAC) systems when used for military-related applications. Furthermore, low probability of detection (LPD) may reduce environmental impact of UWAC as communication signals can be transmitted at lower ...
Roee Diamant, Lutz Lampe, Emmett Gamroth
openaire   +1 more source

Optimal Detection Considerations for Low Probability of Intercept

MILCOM 1982 - IEEE Military Communications Conference - Progress in Spread Spectrum Communications, 1982
A variety of receivers which can be used to detect the presence of a wideband (spread) signal in additive white Gaussian noise (AWGN) is explored. The optimality of these receivers is founded upon the knowledge (or lack thereof) of certain key signal parameters.
A. Polydoros, C. L. Weber
openaire   +1 more source

Chaos for low probability of detection communications

Chaos, Solitons & Fractals, 2017
Abstract Many methods for using chaos as a communications signal have been suggested, but all suffer from the difficulty in synchronizing the transmitter and receiver. Chaotic signals are broad band and unpredictable, making them potentially useful when the goal is low interference communications or even low probability of detection (LPD ...
openaire   +1 more source

Spread spectrum signals with low probability of chip rate detection

IEEE Journal on Selected Areas in Communications, 1989
Spread 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
openaire   +1 more source

On the Sensitivity of Wideband Radiometric Detection for Low Probability of Intercept and Probability of Detection (LPI/LPD) in Frequency Hopped Systems

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, Mario A. Blanco, Louis J. Sparace   +2 more
openaire   +1 more source

Detection of low probability of intercept signals in low SNR using multichannel sensor arrays

2014 22nd Signal Processing and Communications Applications Conference (SIU), 2014
In 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
openaire   +2 more sources

A method and metric for quantitatively defining low probability of detection

IEEE Military Communications Conference. Proceedings. MILCOM 98 (Cat. No.98CH36201), 2002
The 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, J.K. Townsend, J.A. Freebersyer   +2 more
openaire   +1 more source

Detection of multiple access low-probability-of-intercept networks

Proceedings of TCC'94 - Tactical Communications Conference, 2002
Increased 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, 2016
Most 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
openaire   +1 more source