Results 51 to 60 of about 37,267,212 (171)
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
Design of digital beamforming for 5G access point applications
, 2023 International audienceAbstract Since the software‐defined radio digital beamforming (DBF) system is the newest tendency in fifth‐generation (5G) development and based on its flexibility applied to antenna arrays, this research paper presents a smart ...
Gharsallah, Ali +7 more
core +1 more source
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
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
Multidimensional Waveform Encoding for Synthetic Aperture Radar Remote Sensing [PDF]
, 2007 This paper introduces and analyses the innovative concept of multidimensional waveform encoding for spaceborne synthetic aperture radar (SAR). The combination of this technique with digital beamforming on receive enables a new class of highly ...
Moreira, Alberto +5 more
core +1 more source
IET Radar, Sonar &Navigation, Volume 18, Issue 7, Page 1132-1144, July 2024.A new narrow beam method based on the generalised oblique projection is proposed. The method proposed has the characteristics of a narrow beam width and big side lobe suppression ratio and is applicable to practical applications with a limited array aperture.
Xingpeng Mao +4 more
wiley +1 more source
A Novel Real-Time Multi-Channel Error Calibration Architecture for DBF-SAR
Remote SensingDigital Beamforming SAR (DBF-SAR) provides high-resolution wide-swath imaging capability, yet it is affected by inter-channel amplitude, phase and time-delay errors induced by temperature variations and random error factors.
Jinsong Qiu +8 more
doaj +1 more source