Results 41 to 50 of about 270,830 (185)
HAWC Upgrade for Multi-TeV {\gamma}-ray Detection
, 2016 The High Altitude Water Cherenkov (HAWC) high-energy {\gamma}-ray observatory was completed in march 2015 in central Mexico. The detector, consisting of 300 water tanks, is currently being upgraded to improve its performance at Multi-TeV energies, with a
Jardin-Blicq, Armelle, Joshi, Vikas
core +1 more source
Mutual coupling error modeling and correction of shared aperture interleaved sparse array antennas
Dianxin kexue, 2018 The shared aperture interleaved sparse array antenna is an effective way to implement a multi-function array antenna.The existing parameterized mutual coupling elimination methods are all developed for uniform array antennas.The mutual coupling matrix ...
Junming ZHUANG, Longjun LI
doaj +2 more sources
Sparse Sensing with Semi-Coprime Arrays
, 2018 A semi-coprime array (SCA) interleaves two undersampled uniform linear arrays (ULAs) and a $Q$ element standard ULA. The undersampling factors of the first two arrays are $QM$ and $QN$ respectively where $M$ and $N$ are coprime. The resulting non-uniform
Adhikari, Kaushallya
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Evaluating Spatial Resolution and Channel Capacity of Sparse Cylindrical Arrays for Massive MIMO
IEEE Access, 2017 How to design antenna arrays plays an important role in wireless communications, especially when there are hundreds of antennas. In massive multiple-input and multiple-output (MIMO), if the number of antennas and RF chains are increasing, the channel ...
Na Wu, Fangqi Zhu, Qilian Liang
doaj +1 more source
Latest results of the Tunka Radio Extension (ISVHECRI2016) [PDF]
, 2017 The Tunka Radio Extension (Tunka-Rex) is an antenna array consisting of 63 antennas at the location of the TAIGA facility (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) in Eastern Siberia, nearby Lake Baikal.
Bezyazeekov, P. A. +27 more
core +3 more sources
IET Radar, Sonar & Navigation, 2022 Frequency diverse array‐multiple input multiple output (FDA‐MIMO) radar not only has the advantage of waveform diversity but also can realise azimuth‐range correlation map, so it can realise high precision azimuth‐range joint estimation and has the ...
Hongzhen Wang +3 more
doaj +1 more source
HAWC High Energy Upgrade with a Sparse Array [PDF]
, 2017 The High Altitude Water Cherenkov (HAWC) gamma-ray observatory has been fully operational since March 2015. To improve its sensitivity at the highest energies, it is being upgraded with an additional sparse array called outrigger array.
Joshi, Vikas
core +2 more sources
The Real-Valued Sparse Direction of Arrival (DOA) Estimation Based on the Khatri-Rao Product
Sensors, 2016 There is a problem that complex operation which leads to a heavy calculation burden is required when the direction of arrival (DOA) of a sparse signal is estimated by using the array covariance matrix.
Tao Chen, Huanxin Wu, Zhongkai Zhao
doaj +1 more source
, 2016 In this paper, we propose a new type of array antenna, termed the Random Frequency Diverse Array (RFDA), for an uncoupled indication of target direction and range with low system complexity.
Liu, Yimin +3 more
core +1 more source