Results 71 to 80 of about 4,347 (213)

Assessing Spatial Accuracy of Lightning Forecasts Over India: Supporting Impact‐Based Forecasting for Vulnerable Regions

Meteorological Applications, Volume 32, Issue 5, September/October 2025.
This study evaluates a high‐resolution (4 km) regional model's performance in forecasting lightning over India (2021–2024) using the MODE tool. Results show reliable predictions of spatial extent, intensity, and shape, with better performance during the monsoon season. MODE effectively identifies high‐risk regions, supporting 3‐day advance impact‐based
Harvir Singh, Anumeha Dube, Raghavendra Ashrit, John P. George, V. S. Prasad   +4 more
wiley   +1 more source

Modeling and Analysis of LPI Radar Signal

IOSR Journal of Electronics and Communication Engineering, 2013
Radar Emitter Signal recognition is one of the key procedures of signal processing in Electronic Warfare (EW) Receiver. As there is an intense growth in the activities of modern Electronic Warfare, advanced radars are increasing and becoming main component of radars gradually. These modern radars called Low Probability of Intercept (LPI), use different
openaire   +1 more source

A European Hail and Lightning Climatology From an 11‐Year Kilometer‐Scale Regional Climate Simulation

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 14, 28 July 2025.
Abstract Hail and lightning, associated with severe convective storms, can cause extensive damage to infrastructure, agriculture, and ecosystems. Because of the small scale of these storms and the complexity of the involved processes, observing and modeling convective storms is challenging.
R. Cui, I. Thurnherr, P. Velasquez, K. P. Brennan, M. Leclair, A. Mazzoleni, T. Schmid, H. Wernli, C. Schär   +8 more
wiley   +1 more source

Digital LPI Radar Detector

, 2001
The function of a Low Probability ofIntercept (LPI) radar is to prevent its interception by an Electronic Support (ES) receiver. This objective is generally achieved through the use of a radar waveform that is mismatched to those waveforms for which an ES receiver is tuned.
Ong, Peng Ghee, Teng, Haw Kiad
openaire   +1 more source

Notional Geological Traverses, Station Activities, and Sample Collection on Mons Malapert, Lunar South Polar Region

Journal of Geophysical Research: Planets, Volume 130, Issue 7, July 2025.
Abstract The geology of a potential Artemis landing site on Mons Malapert is examined using remote sensing techniques and lessons learned from Apollo missions to the lunar surface. Orthomosaics, digital terrain models, illumination models, thermal conditions, crater size‐frequency distribution analyses, geomorphological mapping, spectral and ...
David A. Kring, Amy L. Fagan, Valentin T. Bickel, Ariel N. Deutsch, Lisa R. Gaddis, Juliane Gross, Harald Hiesinger, Therese M. Huning, José M. Hurtado Jr., Wajiha Iqbal, Katherine H. Joy, Laszlo Keszthelyi, Myriam Lemelin, Chris A. Looper, José M. Martínez‐Camacho, Gordon R. Osinski, Eloy Peña‐Asensio, Nico Schmedemann, Matthew A. Siegler, Sonia M. Tikoo, Carolyn H. van der Bogert, Kris Zacny   +21 more
wiley   +1 more source

A radar-echo model for Mars [PDF]

Researchers developed a radar-echo model for Mars based on 12.6 cm continuous wave radio transmissions backscattered from the planet. The model broadly matches the variations in depolarized and polarized total radar cross sections with longitude observed
Moore, H. J., Thompson, T. W.
core   +1 more source

1D Convolutional Neural Networks Versus Automatic Classifiers for Known LPI Radar Signals Under White Gaussian Noise

IEEE Access, 2020
In this study we analyze the signal classification performances of various classifiers for deterministic signals under the additive White Gaussian Noise (WGN) in a wide range of signal to noise ratio (SNR) levels (-40dB to +20dB).
Alper Yildirim, Serkan Kiranyaz
doaj   +1 more source

Scientific Results of the Nasa-sponsored Study Project on Mars: Evolution of Its Climate and Atmosphere [PDF]

The scientific highlights of the Mars: Evolution of its Climate and Atmosphere (MECA) study project are reviewed and some of the important issues in Martian climate research that remain unresolved are ...
Clifford, Stephen M., Greeley, Ronald, Haberle, Robert M.   +2 more
core   +1 more source

Lightning Prediction in the Tehran Region Using the WRF Model With Multiple Physical Parameterizations and an Ensemble Approach

Earth and Space Science, Volume 12, Issue 6, June 2025.
Abstract This study aims to predict the lightning (thunderstorm) potential in the Tehran region using data from meteorological synoptic stations and the Earth Networks Total Lightning Network (ENTLN). We employed the Weather Research and Forecasting (WRF) model to simulate lightning, focusing on the innermost domain, which spans between 34.5 and 36.5°N,
Sakineh Khansalari, Maryam Gharaylou
wiley   +1 more source

Joint Design of LPI Transmit Waveform and Receive Beamforming Based on Neural Networks for FDA-MIMO

Leida xuebao
Traditional Low Probability of Intercept (LPI) array radars that use phased array or Multiple-Input Multiple-Output (MIMO) systems face limitations in terms of controlling radiation energy only at specific angles and cannot achieve energy control over ...
Deshun LIU, Deping XIA, Lu CHEN, Yanfeng MA   +3 more
doaj   +1 more source