Results 91 to 100 of about 2,705,955 (242)

Joint waveform design and resource allocation strategy for cognitive radar target situation awareness

open access: yesIET Radar, Sonar &Navigation, Volume 18, Issue 8, Page 1364-1380, August 2024.
Based on the utilisation of the interacting multiple model algorithm, the manuscript aims to achieve target situation awareness. It analyses the attitude information of the target under different states to obtain the Radar Cross Section (RCS) at different time instants.
Yuxiao Song   +4 more
wiley   +1 more source

Non-Cooperative Detection of Frequency-Hopped GMSK Signals [PDF]

open access: yes, 2006
Many current and emerging communication signals use Gaussian Minimum Shift Keyed (GMSK), Frequency-Hopped (FH) waveforms to reduce adjacent-channel interference while maintaining Low Probability of Intercept (LPI) characteristics.
Sikes, Clint R.
core   +1 more source

Hiding Information in Noise: Fundamental Limits of Covert Wireless Communication [PDF]

open access: yesIEEE Communications Magazine 53.12 (2015), 2015
Widely-deployed encryption-based security prevents unauthorized decoding, but does not ensure undetectability of communication. However, covert, or low probability of detection/intercept (LPD/LPI) communication is crucial in many scenarios ranging from covert military operations and the organization of social unrest, to privacy protection for users of ...
arxiv  

Energy-Delay Tradeoff and Dynamic Sleep Switching for Bluetooth-Like Body-Area Sensor Networks

open access: yes, 2012
Wireless technology enables novel approaches to healthcare, in particular the remote monitoring of vital signs and other parameters indicative of people's health.
Caire, Giuseppe   +2 more
core   +1 more source

Implementation of a coherent real‐time noise radar system

open access: yesIET Radar, Sonar &Navigation, Volume 18, Issue 7, Page 1002-1013, July 2024.
A real‐time noise radar system is implemented, and relevant hardware and system aspects of noise radar implementation are presented. The constructed system processes data continuously with 100 % duty cycle, and it can do so indefinitely while operating with 200 MHz bandwidth, processing a range of up to 8.5 km, and integrating each coherent processing ...
Martin Ankel   +4 more
wiley   +1 more source

Willow Abundance and Condition Mapping in Rocky Mountain National Park [PDF]

open access: yes, 2023
Riparian and wetland willow species have undergone serious declines in Rocky Mountain National Park as a consequence of a variety of environmental changes and, most recently, damage resulting from moose overpopulation.
Nielsen, Eric M
core   +1 more source

Artificial Intelligence applications in Noise Radar Technology

open access: yesIET Radar, Sonar &Navigation, Volume 18, Issue 7, Page 986-1001, July 2024.
Abstract Radar systems are a topic of great interest, especially due to their extensive range of applications and ability to operate in all weather conditions. Modern radars have high requirements such as its resolution, accuracy and robustness, depending on the application.
Afonso L. Sénica   +2 more
wiley   +1 more source

A Real Orthogonal Space-Time Coded UWB Scheme for Wireless Secure Communications

open access: yesEURASIP Journal on Wireless Communications and Networking, 2009
Recent research reveals that information security and information-hiding capabilities can be enhanced by proper exploitation of space-time techniques. Meanwhile, intrinsic properties of ultra-wideband (UWB) signals make it an outstanding candidate for ...
Zhang Yanbing, Dai Huaiyu
doaj   +2 more sources

Adaptive Jamming Waveform Design for Distributed Multiple‐Radar Architectures Based on Low Probability of Intercept

open access: yesRadio Science, 2019
This paper investigates the problem of low probability of intercept (LPI)‐based adaptive jamming waveform design for distributed multiple‐radar architectures. Such a smart jammer system adopts a multibeam working mode, where multiple simultaneous jamming
C. Shi, F. Wang, S. Salous, J. J. Zhou
semanticscholar   +1 more source

Policies for Transmit Power Control in the Conditions of Jamming in Clustered Wireless System [PDF]

open access: yes, 2020
This article presents a consistent solution of Transmit Power Control in centralized (clustered) wireless network with and without jamming. Depending on the policy assumed, solutions are applied to minimize the power used in a system or to satisfy ...
Michalak, Jarosław Tadeusz
core   +4 more sources

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