Results 31 to 40 of about 4,347 (213)

LPI Optimization Framework for Target Tracking in Radar Network Architectures Using Information-Theoretic Criteria

International Journal of Antennas and Propagation, 2014
Widely distributed radar network architectures can provide significant performance improvement for target detection and localization. For a fixed radar network, the achievable target detection performance may go beyond a predetermined threshold with full
Chenguang Shi, Fei Wang, Mathini Sellathurai, Jianjiang Zhou   +3 more
doaj   +1 more source

Unveiling the Evolutionary Lineages and Habitat Dynamics of the Monotypic Crowned River Turtle <i>Hardella thurjii</i> (Gray, 1831) (Testudines: Geoemydidae): Strategic Conservation Insights for an Endangered Freshwater Turtle From Southern Asia. [PDF]

Ecol Evol
This study provides the first complete mitochondrial genome of the monotypic H. thurjii , sequenced using next‐generation technologies. Additionally, it employs ensemble species distribution modeling to evaluate habitat suitability and shape geometry under both current and projected climatic scenarios.
Abedin I, Singh A, Purakayastha J, Singh S, Das KC, Kim HW, Kang HE, Kundu S.   +7 more
europepmc   +2 more sources

Research on radar task scheduling with power constraint

The Journal of Engineering, 2019
Aiming at the task-scheduling problem of phased array radar subject to low probability of intercept (LPI), the radar radiation power constraint and power agility features are analysed.
Yong-Kun Wang, Shi-You Zheng
doaj   +1 more source

Counter-Interception and Counter-Exploitation Features of Noise Radar Technology

Remote Sensing, 2021
In defense applications, the main features of radars are the Low Probability of Intercept (LPI) and the Low Probability of Exploitation (LPE). The counterpart uses more and more capable intercept receivers and signal processors thanks to the ongoing ...
Gaspare Galati, Gabriele Pavan, Kubilay Savci, Christoph Wasserzier   +3 more
doaj   +1 more source

WISE/NEOWISE Observations of Comet 103P/Hartley 2 [PDF]

, 2011
We report results based on mid-infrared photometry of comet 103P/Hartley 2 taken during 2010 May 4-13 (when the comet was at a heliocentric distance of 2.3 AU, and an observer distance of 2.0 AU) by the Wide-field Infrared Survey Explorer.
A'Hearn, Michael F., Bauer, James M., Blauvelt, Erin K., Collaboration, the WISE, Cutri, Roc M., Dailey, John W., DeBaun, Emily, Fernández, Yan R., Grav, Tommy, Hand, Emma, Lisse, Carey M., Mainzer, A. K., Masci, Frank J., Masiero, Joseph R., McMillan, Robert S., Meech, Karen J., Pittichova, Jana, Scotti, James V., Tholen, David J., Walker, Russell G., Wilkins, Ashlee, Wright, Edward L.   +21 more
core   +3 more sources

LPI Optimization Framework for Radar Network Based on Minimum Mean-Square Error Estimation

Entropy, 2017
This paper presents a novel low probability of intercept (LPI) optimization framework in radar network by minimizing the Schleher intercept factor based on minimum mean-square error (MMSE) estimation.
Ji She, Jianjiang Zhou, Fei Wang, Hailin Li   +3 more
doaj   +1 more source

Digital signal generation for LFM–LPI radars

Electronics Letters, 2003
A new algorithm to generate chirp signals with low computational complexity and very low memory is presented. This algorithm, based on a feedback and time-variant system, can improve the chirp signal generation typically used in LPI radar with lineal FM.
J.E. González, J.M. Pardo, A. Asensio, M. Burgos   +3 more
openaire   +1 more source

Overcoming the Challenges Associated with Image-based Mapping of Small Bodies in Preparation for the OSIRIS-REx Mission to (101955) Bennu [PDF]

, 2018
The OSIRIS-REx Asteroid Sample Return Mission is the third mission in NASA's New Frontiers Program and is the first U.S. mission to return samples from an asteroid to Earth.
Backer, J., Becker, K., Becker, T., Bennett, C. A., Berry, K., Boynton, W. V., Burke, K. N., Campins, H. C., Carcich, B., Chojnacki, M., Clark, B. E., Cook, D. A., Corre, L. Le, Crombie, M. K., d'Aubigny, C. Drouet, de Leon, J., DellaGiustina, D. N., Edmundson, K. L., Enos, H. L., Getzandanner, K., Golish, D. R, Habib, N., Hergenrother, C. W., Kidd Jr., J. N., Kinney-Spano, E. K., Lauretta, D. S., Leonard, J. M., Licandro, J., Mapel, J., Milazzo, M. P., Nolan, M. C., Polit, A. T., Rizk, B., Rizos, J. L., Roper, H., Sides, S., Smith, P. H., Sutton, S. S., Walsh, K. J., Westermann, M. M., Wibben, D. R.   +40 more
core   +2 more sources

Densely-Accumulated Convolutional Network for Accurate LPI Radar Waveform Recognition

2021 IEEE Global Communications Conference (GLOBECOM), 2021
Abstract This paper presents a deep learning-based method to automatically recognize low probability of intercept (LPI) radar waveforms against diversified jamming attacks. Concretely, an efficient convolutional neural network (CNN) architecture, namely Densely-Accumulated Network (DANet), is introduced to learn the time-frequency representation ...
Huynh-The, T. (Thien), Pham, Q.-V. (Quoc-Viet), Nguyen, T.-V. (Toan-Van), Doan, V.-S. (Van-Sang), Nguyen, N. T. (Nhan Thanh), Benevides da Costa, D. (Daniel), Kim, D.-S. (Dong-Seong)   +6 more
openaire   +2 more sources

Low Probability of Intercept-Based Radar Waveform Design for Spectral Coexistence of Distributed Multiple-Radar and Wireless Communication Systems in Clutter

Entropy, 2018
In this paper, the problem of low probability of intercept (LPI)-based radar waveform design for distributed multiple-radar system (DMRS) is studied, which consists of multiple radars coexisting with a wireless communication system in the same frequency ...
Chenguang Shi, Fei Wang, Sana Salous, Jianjiang Zhou   +3 more
doaj   +1 more source