Results 61 to 70 of about 37,267,212 (171)

Improving estimation performance of compressive sensing‐based multiple‐input multiple‐output radar using electronic beamsteering

IET Radar, Sonar &Navigation, Volume 18, Issue 6, Page 891-903, June 2024.
The authors deal with direction‐of‐arrival (DoA) estimation of obstacles in the field‐of‐view (FoV) using compressive sensing (CS) and compares multiple‐input multiple‐output (MIMO) radar signal processing with a codebook‐based electronic beamsteering approach for compact radar sensors in future urban air mobility.
Max Schurwanz, Jan Mietzner, Peter Adam Hoeher   +2 more
wiley   +1 more source

Urban traffic congestion alleviation system based on millimeter wave radar and improved probabilistic neural network

IET Radar, Sonar &Navigation, Volume 18, Issue 2, Page 327-343, February 2024.
The authors propose an urban traffic congestion alleviation system based on millimeter wave radar and improved probabilistic neural network. And actual traffic light control case is provided to verify the performance of the proposed radar system. Abstract The millimeter‐wave radar sensor is widely used for urban traffic surveillance because of its ...
Bo Yang, Hua Zhang, Mengxin Du, Anna Wang, Kai Xiong   +4 more
wiley   +1 more source

Analysis and Design of a Multiplex, Delay‐and‐Sum (MDAS) Beamformer Architecture to Implement a Fixed‐Focus Receive Beamformer for Portable Ultrasound Imaging Systems

Journal of Electrical and Computer Engineering, Volume 2024, Issue 1, 2024.
A multiplex, delay‐and‐sum (MDAS) architecture is proposed to implement a fixed‐focus receive beamformer such as the first stage of the synthetic aperture sequential beamforming (P‐SASB) and synthetic transmit beams combined with the P‐SASB (STB‐P‐SASB) beamforming methods.
Sadegh Dashti, Omid Shoaei, Andrea Tani
wiley   +1 more source

A Low‐Cost Wideband Digital Array Antenna Based on Stretch Processing Technique

International Journal of Antennas and Propagation, Volume 2024, Issue 1, 2024.
Wideband digital phased array radar offers the advantages of high range resolution, which improves the recognition ability for multiple targets, group targets, and high‐speed targets. Traditional wideband phased arrays use true time delay to compensate for aperture fill time; however, the cost increases significantly.
Daqun Yu, Zhangcheng Hao, Lei Yang, Yang Wang, Lei Sun, Jianjun Mao, Trushit Upadhyaya   +6 more
wiley   +1 more source

A Spaceborne Ka‐Band Earth‐Coverage Phased Array Antenna Based on DBF‐Shared Subarray for LEO Communications

International Journal of RF and Microwave Computer-Aided Engineering, Volume 2024, Issue 1, 2024.
A spaceborne Earth‐coverage phased array (ECPA) antenna at Ka‐band is proposed for low‐Earth orbit (LEO) satellite applications, which is based on digital beamforming (DBF) partially shared subarray architecture to implement two stages of DBF. By taking into account the effects of mutual coupling in active element pattern optimization, a new method to ...
Muren Cai, Wentao Li, Xiaowei Shi, Qiaoshan Zhang, Heng Liu, Hu Liu, Yan Li, Buning Tian, Piotr Gas   +8 more
wiley   +1 more source

A Novel Multi-Beam SAR Two-Dimensional Ambiguity Suppression Method Based on Azimuth Phase Coding

Remote Sensing
In order to address the problems of range ambiguity and azimuth ambiguity in the wide-swath imaging of synthetic aperture radar (SAR), this paper proposes a multi-beam SAR two-dimensional ambiguity suppression method based on azimuth phase coding (APC ...
Yihao Xu, Fubo Zhang, Wenjie Li, Yangliang Wan, Longyong Chen, Tao Jiang   +5 more
doaj   +1 more source

Investigation on Beamspace Multiple-Input Multiple-Output Synthetic Aperture Radar Data Imaging

International Journal of Antennas and Propagation, 2016
The multiple-input multiple-output (MIMO) technique can improve the high-resolution wide-swath imaging capacity of synthetic aperture radar (SAR) systems.
Hongbo Mo, Wei Xu, Zhimin Zeng
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, Gebert, Nicolas, Krieger, Gerhard   +2 more
core  

Single RF Channel Digital Beamforming Array Antenna Based on Compressed Sensing for Large-Scale Antenna Applications

IEEE Access, 2018
A single radio frequency (RF) channel digital beamforming (DBF) array antenna based on compressed sensing (CS) was proposed to reduce the hardware costs, power consumption, and the design complexity of large-scale DBF systems.
Duo Zhang, Jin-dong Zhang, Can Cui, Wen Wu, Da-gang Fang   +4 more
doaj   +1 more source

A Channel Calibration Algorithm Based on Isolated Scatterers for Multi-Channel HRWS-SAR

IEEE Access, 2019
Multi-channel receiving technique has been proved to be a promising approach for synthetic aperture radar (SAR) to achieve simultaneous high-resolution and wide-swath (HRWS) imaging. With the support of digital beamforming (DBF) technique, ambiguity-free
Di Wu, Yudong Zhang, Daiyin Zhu, Shuihua Wang, Mingwei Shen   +4 more
doaj   +1 more source