Results 71 to 80 of about 2,705,955 (242)

Power and Waveform Resource Allocation Method of LPI Netted Radar for Target Search and Tracking

IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.
A new scenario is considered for the low probability of intercept (LPI) netted radar in simultaneous target search and tracking, and a joint power and waveform resource allocation algorithm is proposed through the optimization of the multi‐dimensional resources.
Longhao Xie, Wenxing Ren, Ziyang Cheng, Ming Li, Huiyong Li   +4 more
wiley   +1 more source

Long‐Tailed Distributed Radar Emitter Signal Automatic Modulation Recognition Based on Decoupled Training

IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.
The research on radar emitter recognition under the condition of long tail distribution is proposed for the first time. An automatic modulation recognition method adapted to long‐tail distribution is proposed, which includes feature extraction under unbalanced dataset based on decoupling ResNeXt network design and classifier learning under balanced ...
Gangyin Sun, Shiwen Chen, Li Zhang, Chaopeng Wu, Haikun Fang   +4 more
wiley   +1 more source

Cognitive MIMO Frequency Diverse Array Radar with High LPI Performance

International Journal of Antennas and Propagation, 2016
Frequency diverse array (FDA) has its unique advantage in realizing low probability of intercept (LPI) technology for its dependent beam pattern. In this paper, we proposed a cognitive radar based on the frequency diverse array multiple-input multiple ...
Ling Huang, Kuandong Gao, Zhiming He, Jingye Cai   +3 more
doaj   +1 more source

Discrete Electronic Warfare Signal Processing using Compressed Sensing Based on Random Modulator Pre-Integrator [PDF]

, 2015
Electronic warfare receiver works in the wide electromagnetic spectrum in dense radar signal environment. Current trends in radar systems are ultra wideband and low probability of intercept radar technology.
Mishra, Chandan C., Naik, K. Krishna, Rao, M. Sreenivasa, Reddy, K. Maheshwara   +3 more
core   +3 more sources

Modeling the Impact of Landscape Dynamics on Soil Erosion in Eastern DR Congo: Implications for Sustainable Land Management

Applied and Environmental Soil Science, Volume 2025, Issue 1, 2025.
Human activity and related land‐use/land cover (LULC) changes are the primary causes of accelerated soil erosion during the 21st century. However, there is limited information about the spatiotemporal dynamic of soil erosion under different conditions of LULC changes in mountainous regions of eastern DR Congo.
Jean Nacishali Nteranya, Andrew Kiplagat, Elias K. Ucakuwun, Chantal Kabonyi Nzabandora, Karan Singh   +4 more
wiley   +1 more source

A Synchronization Approach Based on Bidirectional Correlation Search for Aperiodic Chaotic Direct Sequence Spread Spectrum Signals

IEEE Access, 2020
The chaotic direct sequence spread spectrum (CD3S) is one of the distinguished techniques providing physical layer secrecy and low probability of intercept (LPI) in wireless communication.
Guogang Yuan, Zili Chen, Xijun Gao, Jiangyan He, Hongxia Jia   +4 more
doaj   +1 more source

Deciphering the genetic basis of novel traits that discriminate useful and non‐useful biomass to enhance harvest index in wheat

The Plant Genome, Volume 17, Issue 4, December 2024.
Abstract Wheat (Triticum aestivum L.) production must be doubled in the next 25 years to meet the global food demand. Harvest index (HI) is an important indicator of efficient partitioning of photosynthetic assimilates to grains. Reducing competition from alternative sinks, such as stems, and deviating assimilates toward grain increase grain number (GN)
Dipendra Shahi, Jia Guo, Md Ali Babar, Sumit Pradhan, Muhsin Avci, Naeem Khan, Jordan McBreen, Smita Rayamajhi, Zhao Liu, Guihua Bai, Paul St. Amand, Amy Bernardo, Matthew Reynolds, Gemma Molero, Sivakumar Sukumaran, John Foulkes, Jahangir Khan   +16 more
wiley   +1 more source

Superlong GRBs [PDF]

Astron.Lett. 31 (2005) 291, 2005
We searched for anomalously long GRBs (GRBs) in the archival records of the Burst and Transient Sources Experiment (BATSE). Ten obvious superlong (>500 s) GRBs with almost continuous emission episodes were found. Nine of these events are known from the BATSE catalog, but five have no duration estimates; we found one burst for the first time.
arxiv   +1 more source

Netted LPI radars [PDF]

, 2011
A significant number of Low Probability of Intercept (LPI) radars are used in various military applications, from guided weapons (such anti-ship missile), to large platforms (aircrafts, ships), to large systems (Integrated Air Defense Systems - IADS ...
Johns, Scott T.
core  

Improving physical layer security in distributed multiple‐input multiple‐output dual‐function radar‐communication systems

IET Radar, Sonar &Navigation, Volume 18, Issue 10, Page 1710-1723, October 2024.
The secrecy rate is maximised in D‐MIMO DFRC systems by decreasing the eavesdropper data rate as much as possible with a two‐step antenna selection method while maintaining optimal radar performance. In the proposed method, first, a cluster of distributed transmitter antennas is selected based on path fading effects.
Safieh Jebali, Hengameh Keshavarz, Nilufar Hoseini   +2 more
wiley   +1 more source