Results 31 to 40 of about 1,464,347 (286)

Ultra-Low Sidelobe Waveforms Design for LPI Radar Based on Joint Complementary Phase-Coding and Optimized Discrete Frequency-Coding

Remote Sensing, 2022
In this paper, in order to reduce the probability of the radar waveform intercepted by the passive detection system, the time-bandwidth product of the radar waveform is increased, and the detection probability of the radar waveform to the target is ...
Yuxiao Song, Yu Wang, Jingyang Xie, Yiming Yang, Biao Tian, Shiyou Xu   +5 more
doaj   +1 more source

Detectability models for multiple access low-probability-of-intercept networks [PDF]

IEEE Transactions on Aerospace and Electronic Systems, 2000
Increased demands for communications in the tactical battlefield have driven the development of multiple access low-probability-of-intercept (LPI) networks. Most detectability studies of LPI networks focus on the individual links of the network, in which the intercept and detectability calculations are conducted for a single network transmitter.
Prescott, Glenn Eugene, Mills, Robert F.
openaire   +2 more sources

Influence of dense macrophyte vegetation and total gas saturation on the performance of acoustic telemetry

Animal Biotelemetry, 2022
Background Acoustic telemetry is widely used as a method for high resolution monitoring of aquatic animal movement to investigate relationships between individual animals and their environment.
Kirstine Thiemer, Robert J. Lennox, Thrond Oddvar Haugen   +2 more
doaj   +1 more source

Spectrum sensing algorithm based on stochastic resonance and non-central F-distribution

Dianxin kexue, 2023
To solve the problem that the detection probability of the spectrum sensing algorithm is low and the number of samples required for detection is large at low signal-to-noise ratio (SNR), a spectrum sensing algorithm based on stochastic resonance and non ...
Yuanmeng FAN, Shunlan LIU
doaj   +2 more sources

A target guided subband filter for acoustic event detection in noisy environments using wavelet packets [PDF]

, 2014
This paper deals with acoustic event detection (AED), such as screams, gunshots, and explosions, in noisy environments. The main aim is to improve the detection performance under adverse conditions with a very low signal-to-noise ratio (SNR).
Feng, Zu-Ren, Jiang, Ping, Yang, Xue-Wen, Zhang, Jun, Zhou, Qing   +4 more
core   +1 more source

Information divergence-based low probability of intercept waveform detection for multi-antenna intercept receivers

The Journal of Engineering, 2019
Based on the asymptotic spectral distribution of sample covariance matrix, a new low probability of interception (LPI) signal detection method for multi-antenna intercept receiver is proposed via reforming the noise sequence into a Wishart matrix.
Jun Chen, Fei Wang, Jianjiang Zhou, Chenguang Shi   +3 more
doaj   +1 more source

Improved probability hypothesis density filter for multi‐target tracking of non‐cooperative bistatic radar

IET Radar, Sonar & Navigation, 2022
Non‐cooperative bistatic radar refers to the passive bistatic radar using a non‐cooperative radar as the illuminator of opportunity. Limited by the non‐cooperation and bistatic configuration, multi‐target tracking of the non‐cooperative bistatic radar is
Sen Wang, Qinglong Bao, Jiameng Pan
doaj   +1 more source

Assessing Population Trends of Species with Imperfect Detection: Double Count Analyses and Simulations Confirm Reliable Estimates in Brown Frogs

Animals, 2022
Most animal species are detected imperfectly and overlooking individuals can result in a biased inference of the abundance patterns and underlying processes.
Mattia Falaschi, Chiara Gibertini, Elia Lo Parrino, Martina Muraro, Benedetta Barzaghi, Raoul Manenti, Gentile Francesco Ficetola   +6 more
doaj   +1 more source

A Time-Varying Chaotic Multitone Communication Method Based on OFDM for Low Detection Probability of Eavesdroppers

IEEE Access, 2021
Due to the rapid development of modern communication technology and the substantial improvement of the processing capacity of communication equipment, it has become a challenging and meaningful research direction to realize the covert transmission of ...
Shengnan Guo, Yongqing Fu
doaj   +1 more source

Detection Probability of a Low-Mass Planet for Triple Lens Events: Implication of Properties of Binary-Lens Superposition

, 2010
In view of the assumption that any planetary system is likely to be composed of more than one planet, and the multiple planet system with a large mass planet has more chance of detailed follow-up observations, the multiple planet system may be an ...
Beaulieu, Bennett, Bennett, Bennett, Bond, Bond, Charbonneau, Chauvin, Chung, Dong, Gaudi, Gaudi, Gaudi, Gould, Gould, Griest, Han, Han, Han, Han, Han, Han, Heon-Young Chang, Ida, Janczak, Kayser, Kennedy, Kubas, Laughlin, Mao, Mayor, Mayor, Mayor, Myeong-Gu Park, Paczyński, Rattenbury, Rhie, Rivera, Schneider, Sumi, Udalski, Wambsganss, Witt, Wolszczan, Yee, Yoo, Yoon-Hyun Ryu   +46 more
core   +1 more source