Results 31 to 40 of about 1,404,977 (295)

GESTRA - upgrading to future distributed phased array radar networks for space surveillance

, 2023
2734More and more objects are orbiting the Earth. Especially mega-constellations lead to a big number of artificial objects in space, both active and debris. This increasing amount of space debris is becoming more and more dangerous for human spaceflight.
Reising, Christoph, Hoffmann, Rudolf, Schneider, Stephan, Horstmann, Steven, Gilles, Markus   +4 more
core   +1 more source

Spatiotemporal Conditional Diffusion with a Vision-Language Model: Spatial Quality Modeling for Adaptive Fusion of Radar Forecasts

Atmosphere
Combining diffusion forecasts requires decisions about which candidates to retain and how to preserve strong echoes. We propose STCD-VLM, which learns candidate subset quality for adaptive fusion of radar nowcasts.
Xinwei Qian, Yunfei Zhang, Lu Peng, Xinghai Zhang, Xinjue Peng, Junkai Liu   +5 more
doaj   +1 more source

Multi-Beam Radar Communication Integrated System Design

Information, 2023
In this paper, we propose a multi-beam integrated radar and communication scheme using phased-array antenna, in which the same LFM-BPSK integrated waveform is used for both the radar and the communication beams.
Hao Ma, Jun Wang, Xin Sun, Wenxin Jin
doaj   +1 more source

Convective Structure and Microphysical Characteristics of a Cold-season Elevated Hailstorm on 21 February 2024

应用气象学报
Multi-source observational datasets, including high-frequency, minutely automatic weather stations, an X-band phased-array radar, a wind profiler radar and a microwave radiometer, are employed to analyze a typical cold-season elevated hailstorm occurred ...
Li Jian, Yi Jun, Wan Fujing, Feng Lei, Xiao Haixia, Luo Jiangshan, Sun Min, Zhang Rongzhi   +7 more
doaj   +1 more source

GESTRA - a phased-array based surveillance and tracking radar for space situational awareness

, 2022
S.483-487Space debris is an ongoing and growing problem for space-based infrastructure. The rising population of man-made debris particles has the potential to destroy operational satellites and spacecrafts. In order to avoid the risk of collisions it is
Ben Bekhti, N., Kirchner, C., Peters, O., Eversberg, T., Wilden, H., Brenner, A.   +5 more
core   +1 more source

Climatological characteristics and influencing factors of precipitation from landfalling tropical cyclones in East China

Frontiers in Earth Science
IntroductionThis study investigates the precipitation characteristics of tropical cyclones (TCs) making landfall in East China from 1960 to 2010.MethodsStatistical and factor analysis methodologies were employed, leveraging TC precipitation separation ...
Longbin Ye, Longbin Ye, Jing Zhu, Zhengshuai Wang, Zhizhong Su   +4 more
doaj   +1 more source

Progress in phased-array radar applications

, 2022
4 S.During the last decade a rapid progress of phased-array radar systems for military as well as for civil applications can be observed. New extensive programs also in Europe are technology drivers in this field. The aim of this paper is to give a short
Klemm, R., Nickel, U., Ender, J.H.G., Brenner, A.R., Wilden, H., Eibert, T.F., Nüßler, D.   +6 more
core   +1 more source

Ship-Borne Phased Array Radar Using GA Based Adaptive α-β-γ Filter for Beamforming Compensation and Air Target Tracking

International Journal of Antennas and Propagation, 2015
Beam pointing error caused by ship motion over the ocean affects the tracking performance of the ship-borne phased array radar. Due to the dynamic nature of the sea environments, the ship-borne phased array radar must be able to compensate for the ship’s
J. Mar, Chen-Chih Liu, M. B. Basnet
doaj   +1 more source

Volume scan modeling simulator of a 1D phased array weather radar

EURASIP Journal on Advances in Signal Processing, 2023
Phased array weather radar (PAWR) for hazardous weather phenomena observation has attracted considerable attention. In this paper, a PAWR simulator for volume scan mode modeling is designed and the volume scan model has been used to evaluate the one ...
Xuehua Li, Ze Lin, Zhichao Bu, Jianxin He, Fang Liu, Zhao Shi, Shunxian Tang, Chuanzhi Wang, Shaojun Dai   +8 more
doaj   +1 more source

Intelligent Motion Compensation for Improving the Tracking Performance of Shipborne Phased Array Radar

International Journal of Antennas and Propagation, 2013
The shipborne phased array radar must be able to compensate the ship’s motion and track the maneuvering targets automatically. In this paper, the real-time beam pointing error compensation mechanism of a planar array antenna for ship’s motion is ...
J. Mar, K. C. Tsai, Y. T. Wang, M. B. Basnet   +3 more
doaj   +1 more source