Results 81 to 90 of about 17,836 (241)

Airborne Radar Reveals Area‐Wide Decadal Increase of Surface Mass Balance on the Plateau in Dronning Maud Land, East Antarctica

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Projections of Antarctica's sea‐level contribution depend on future changes in surface mass balance (SMB), yet it remains uncertain whether climate change has already impacted SMB on the East Antarctic Plateau, given diverging trends in prior studies.
Alexandra M. Zuhr, Steven Franke, Olaf Eisen, Daniel Steinhage, Veit Helm, Maria Hörhold, Johannes Freitag, Reinhard Drews   +7 more
wiley   +1 more source

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

Using high‐resolution imagery to map Scots pine regeneration in the Scottish uplands

Ecological Solutions and Evidence, Volume 7, Issue 2, April/June 2026.
This study utilizes high‐resolution imagery to map over 90,000 naturally regenerating Scots pines across a 3360‐ha area in the Scottish Uplands. Our approach demonstrates that remote sensing can accurately quantify landscape‐scale forest expansion, identifying nearly 85% of saplings over 2 m tall.
Ben Damien Spracklen, Dominick Vincent Spracklen   +1 more
wiley   +1 more source

A Deep Reinforcement Learning Method with a Low Intercept Probability in a Netted Synthetic Aperture Radar

Remote Sensing
A deep reinforcement learning (DRL)-based power allocation method is proposed to achieve a low probability of intercept (LPI) in a netted synthetic aperture radar (SAR).
Longhao Xie, Ziyang Cheng, Ming Li, Huiyong Li   +3 more
doaj   +1 more source

Empirical fitting of forward backscattering models for multitemporal retrieval of soil moisture from radar data at L-band [PDF]

, 2017
A multitemporal algorithm, originally conceived for the C-band radar aboard the Sentinel-1 satellite, has been updated to retrieve soil moisture from L-band radar data, such as those provided by the National Aeronautics and Space Administration Soil ...
Fascetti, Fabio, Pierdicca, Nazzareno, Pulvirenti, Luca   +2 more
core   +2 more sources

Between Risk and Refuge: Anthropogenic Linear Features Serve as Barriers, Corridors, and Habitat for Eastern Copperheads (Agkistrodon contortrix)

Ecology and Evolution, Volume 16, Issue 4, April 2026.
Urbanization introduces linear anthropogenic features which have potential to hinder or facilitate wildlife movement. Using 6 years of radiotelemetry (1950 relocations) on a population of eastern copperheads in an urban nature park, we found snakes consistently avoided road crossings, yet selected for roadside habitat, trail crossings, and powerline ...
Ethan J. Kessler, Shelly N. Colatskie, Brittany I. Neier, Benjamin C. Jellen   +3 more
wiley   +1 more source

LPI Sequences Optimization Method against Summation Detector Based on FFT Filter Bank

Remote Sensing
Waveform design is a crucial factor in electronic surveillance (ES) systems. In this paper, we introduce an algorithm that designs a low probability of intercept (LPI) radar waveform. Our approach directly minimizes the detection probability of summation
Qiang Liu, Fucheng Guo, Kunlai Xiong, Zhangmeng Liu, Weidong Hu   +4 more
doaj   +1 more source

Long Term Assimilation of Directional Wave Data From CFOSAT in the Wave Prediction Model MFWAM

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract Recently, satellite wave observations have stepped forward with the innovative measurements from the wave scatterometer SWIM of the CFOSAT mission which provides both the significant wave height (SWH) along‐track at nadir look and the directional wave spectra on off‐nadir incidence angle.
E. Bedossa, L. Aouf, D. Hauser, A. Dalphinet, H. Giordani, F. Collard   +5 more
wiley   +1 more source

Efficient channelized technology based on filter banks

Journal of Measurement Science and Instrumentation, 2016
With the appearance of novel radar signal with low intercept probability,the bandwidth of radar receiver is wider and wider.Wideband digital receiver becomes a research hotspot in the field of communication,radar and electronic reconnaissance,etc.As one ...
ZHANG Di, HAN Zheng, ZHANG Li-ping
doaj  

Automatic LPI Radar Signal Sensing Method Using Visibility Graphs

IEEE Access, 2020
The issue of the low probability of intercept (LPI) radar signal sensing has received considerable attention. Furthermore, the development of military technology further increased demand for it in future electronic warfare (EW).
Tao Wan, Kaili Jiang, Yanli Tang, Ying Xiong, Bin Tang   +4 more
doaj   +1 more source