Results 21 to 30 of about 716,657 (292)

The Anisotropy of Cosmic Ray Arrival Direction around 10^18eV [PDF]

, 1999
Anisotropy in the arrival directions of cosmic rays around 10^{18}eV is studied using data from the Akeno 20 km^2 array and the Akeno Giant Air Shower Array (AGASA), using a total of about 216,000 showers observed over 15 years above 10^{17}eV.
Collaboration, The AGASA, Hayashida, N., Honda, K., Inoue, N., Kadota, K., Kakimoto, F., Kakizawa, S., Kamata, K., Kawaguchi, S., Kawasaki, Y., Kawasumi, N., Kusano, E., Mase, K., Matsubara, Y., Minagawa, T., Murakami, K., Nagano, M., Nishikawa, D., Ohoka, H., Osone, S., Sakaki, N., Sasaki, M., Sasano, M., Shinozaki, K., Takeda, M., Teshima, M., Torii, R., Tsushima, I., Uchihori, Y., Yamamoto, T., Yoshida, S., Yoshii, H.   +31 more
core   +2 more sources

Arrival Directions of the Most Energetic Cosmic Rays [PDF]

Physical Review Letters, 1995
In this Letter we examine the arrival directions of the most energetic cosmic rays (E > 2 * 10^19 eV) detected by several air shower experiments. We find that data taken by different air shower arrays show positive correlations, indicating a non--uniform arrival direction distribution.
Stanev, Todor, Biermann, Peter, Lloyd-Evans, Jeremy, Rachen, Joerg, Watson, Alan   +4 more
openaire   +3 more sources

A Multichannel Spatial Compressed Sensing Approach for Direction of Arrival Estimation [PDF]

, 2010
The final publication is available at http://link.springer.com/chapter/10.1007%2F978-3-642-15995-4_57ESPRC Leadership Fellowship EP/G007144/1EPSRC Platform Grant EP/045235/1EU FET-Open Project FP7-ICT-225913 ...
D. Malioutov, E.J. Candes, E.J. Candes, H. Krim, R. Gribonval, S.G. Mallat, S.S. Chen, Y.C. Eldar   +7 more
core   +4 more sources

Direction of Arrival Estimation Algorithm Based on Coprime Array [PDF]

Hangkong bingqi, 2023
The coprime array has attracted extensive attention because of its flexible antenna placement form and larger array aperture compared with the uniform array, which can obtain higher degrees of freedom and reduce the cost of hardware resources.
Liu Jianing, Si Weijian
doaj   +1 more source

Estimation of the Azimuth Angle of the Arrival Direction for an Ultrasonic Signal by Using Indirect Determination of the Phase Shift

Archives of Acoustics, 2019
The paper presents and discusses a method of azimuth determination of ultrasonic echo arrival in air. The basis of the presented approach is the assumption that the received signal is a narrowband one. In this way, the direction of the signal arrival can
Bogdan KRECZMER
doaj   +1 more source

Infrasound direction of arrival determination using a balloon-borne aeroseismometer [PDF]

JASA Express Letters, 2022
Free-floating balloons are an emerging platform for infrasound recording, but they cannot host arrays sufficiently wide for multi-sensor acoustic direction finding techniques.
Daniel C. Bowman, Jerry W. Rouse, Siddharth Krishnamoorthy, Elizabeth A. Silber   +3 more
doaj   +1 more source

Arrival Directions of Ultrahigh Energy Showers Arrival Directions of Ultrahigh Energy Showers

, 2011
Arrival directions of ultrahigh energy extensive air showers (EAS) by world arrays data are analyzed. It is shown that arrival directions of ultrahigh energy EAS by Yakutsk and P. Auger data are some correlated with pulsars of Local Arm Orion of Galaxy. It is found large amplitude of first harmony of Fourier row by data Yakutsk array.
Kolosov, V. A., Mikhailov, A. A.
openaire   +2 more sources

Some of Problems of Direction Finding of Ground-Based Radars Using Monopulse Location System Installed on Unmanned Aerial Vehicle

Sensors, 2020
Locating active radars in real environmental conditions is a very important and complex task. The efficiency of the direction finding (DF) of ground-based radars and other microwave emitters using unmanned aerial vehicles (UAV) is dependent on the ...
Adam Rutkowski, Adam Kawalec
doaj   +1 more source

Sparse methods for direction-of-arrival estimation [PDF]

, 2018
65 pages, overview ...
Yang, Zai, Li, Jian, Stoica, Petre, Xie, Lihua   +3 more
openaire   +2 more sources

Radar Antenna Selection for Direction-of-Arrival Estimations [PDF]

2021 IEEE Radar Conference (RadarConf21), 2021
Multi-antenna radars exhibit positively correlated detection performance with the number of elements utilized. The feasibility of refining antenna arrays to reduce cost of operation with only marginal loss of performance has attracted significant attention as utilizing a large number of elements may be prohibitively costly in terms of computation and ...
Atalik, Arda, Yılmaz, Mustafa, Arıkan, Orhan   +2 more
openaire   +2 more sources