Results 51 to 60 of about 35,288,445 (167)
IET Radar, Sonar &Navigation, Volume 18, Issue 9, Page 1474-1480, September 2024.The spatial sensitivity of a machine‐learning‐based coding digital receiving array (ML‐CDRA) is studied which describes the spatial accumulation gain in different directions. It is demonstrated that spatial sensitivity is determined by the encoding network, decoding network, and beamforming criterion.
Lei Xiao, Yubing Han, Shurui Zhang
wiley +1 more source
Digital Beamforming on Receive: Techniques and Optimization Strategies for High-Resolution Wide-Swath SAR Imaging [PDF]
, 2009 Synthetic Aperture Radar (SAR) is a well-proven imaging technique for remote sensing of the earth. However, conventional SAR systems are not capable to fulfill the increasing demands for im-proved spatial resolution and wider swath coverage.
Alberto Moreira +5 more
core
Description and Performance of an L-Band Radiometer with Digital Beamforming
Remote Sensing, 2010 This paper presents the description and performance tests of an L-band microwave radiometer with Digital Beamforming (DBF), developed for the Passive Advanced Unit (PAU) for ocean monitoring project.
Juan F. Marchan-Hernandez +5 more
doaj +1 more source
Digital Beamforming Techniques for Spaceborne Radar Remote Sensing [PDF]
, 2006 This paper introduces the innovative concept of multidimensional waveform encoding for spaceborne synthetic aperture radar. The combination of this technique with digital beamforming on receive enables a new generation of SAR systems with improved ...
Moreira, Alberto +2 more
core
Performance Evaluation of Distributed-Antenna Communications Systems Using Beam-Hopping
, 2005 Digital beamforming (DBF) techniques are capable of improving the performance of communications systems significantly. However, if the transmitted signals are conflicted with strong interference, especially, in the direction of the transmitted beams ...
Yang, L.-L., Zhu, J., Hu, H.
core +1 more source
Alexandria Engineering Journal, 2022 Spectrum sensing (SS) is substantial demand for enabling cognitive radio (CR) systems. In recent years, digital beamforming (DBF) is exploited for performance enhancement of multiple antenna elements or uniform linear array (ULA) based spectrum sensing ...
Hager S. Fouda +2 more
doaj +1 more source
International Journal of Satellite Communications and Networking, Volume 42, Issue 4, Page 286-312, July/August 2024.This paper presents solution techniques that find beam patterns and frequency allocation for GEO high‐throughput satellites and maximize the total demand met across all users. An integer program is used to select an optimal set of beams from a pool of candidate beams generated by our new algorithms.
Ryan Li, Angus Gaudry, Vicky Mak‐Hau
wiley +1 more source
Distributed MIMO Radar Monopulse Angular Estimation
Leida xuebao, 2014 The linear zone of the S-curve, which is formed with the digital beamforming (DBF) method, is extremely narrow for monopulse angle measurements with distributed Multiple-Input and Multiple-Output (MIMO) radar.
Jin Zhen, Xie Liang-gui, Wen Shu-liang
doaj +1 more source
Artificial Intelligence applications in Noise Radar Technology
IET Radar, Sonar &Navigation, Volume 18, Issue 7, Page 986-1001, July 2024.Abstract Radar systems are a topic of great interest, especially due to their extensive range of applications and ability to operate in all weather conditions. Modern radars have high requirements such as its resolution, accuracy and robustness, depending on the application.
Afonso L. Sénica +2 more
wiley +1 more source
Digital beamforming and multidimensional waveform encoding for sapceborne radar remote sensing [PDF]
, 2007 This paper introduces the innovative concept of multidimensional waveform encoding for space-borne synthetic aperture radar (SAR). The combination of this technique with digital beamforming on receive enables a new generation of SAR systems with ...
Moreira, Alberto +2 more
core