Results 261 to 270 of about 18,179 (315)

BeiDou-Based Passive Multistatic Radar Maritime Moving Target Detection Technique via Space–Time Hybrid Integration Processing

IEEE Transactions on Geoscience and Remote Sensing, 2022
This article puts forward a BeiDou-based passive multistatic radar (PMR) maritime moving target (MMT) detection technique via space–time hybrid integration (STHI) processing.
Zhongyu Li, Chuanbo Huang, Zhichao Sun, Hongyang An, Junjie Wu, Jianyu Yang   +5 more
semanticscholar   +1 more source

Characterization and Calibration of Spaceborne GNSS-R Observations Over the Ocean From Different BeiDou Satellite Types

IEEE Transactions on Geoscience and Remote Sensing, 2022
The Global Navigation Satellite System Reflectometry (GNSS-R) technique can measure ocean surface winds and other geophysical parameters from forward scattered Global Navigation Satellite System (GNSS) (Global Positioning System (GPS), BeiDou (BDS ...
F. Huang, Junming Xia, Cong Yin, W. Bai, Yueqiang Sun, Q. Du, Xianyi Wang, Yuerong Cai, Lichang Duan   +8 more
semanticscholar   +1 more source

Compact Dual-Band Wilkinson Power Divider Design Using Via-Free D-CRLH Resonators for Beidou Navigation Satellite System

IEEE Transactions on Circuits and Systems - II - Express Briefs, 2022
A compact dual-band Wilkinson power divider (WPD) using the via-free dual-composite right/left-handed (D-CRLH) resonators is presented for application in the Beidou navigation satellite system in this brief.
Taotao Huang, Linping Feng, L. Geng, Haiwen Liu, S. Zheng, Sheng Ye, Lina Zhang, Hao Xu   +7 more
semanticscholar   +1 more source

A Compact, Reconfigurable CMOS RF Receiver for NavIC/GPS/Galileo/BeiDou

IEEE transactions on microwave theory and techniques, 2022
This article presents a fully integrated low-intermediate frequency (IF) receiver, Dhruva, for global navigation satellite system (GNSS). The compact receiver uniquely features a fully programmable IP with no external components and no change in the on ...
Vijaya Kumar Kanchetla, Ajinkya Kharalkar, Shubham Jain, S. Khyalia, Jeffin Joy, S. Jose, Rajesh H. Zele   +6 more
semanticscholar   +1 more source

Long-Term Frequency Stability Analysis for RRFM and Power-Law Noise Determination of the BeiDou-3 Satellite On-Board Atomic Clocks

IEEE Transactions on Instrumentation and Measurement, 2022
The key work this study is the power-law noises determination of 18 BeiDou-3 satellites (PRN19-PRN30 and PRN32-PRN37) on-board atomic clocks. First, for the noise determination of white frequency modulation (WFM), random-walk FM (RWFM), and random-run FM
Yuexin Ma, Chengpan Tang, Xiaogong Hu, Xiangwei Zhu, Leyuan Sun, Yufei Yang, Zhiqiao Chang, Jianhua Yang   +7 more
semanticscholar   +1 more source

Yaw attitude modeling for BeiDou I06 and BeiDou-3 satellites

GPS Solutions, 2018
The estimated yaw angles of the BeiDou I06 satellite demonstrated that the satellite experienced midnight- or noon-turn maneuvers when the sun elevation angle above the orbital plane (β angle) was in the range of [− 3°, + 3°] and the orbital angle was in the range of approximately [− 6°, 6°] or [174°, 186°].
Qile Zhao, Jingnan Liu, Chen Wang, Jing Guo, Jing Guo   +4 more
openaire   +2 more sources

A 150-W Spaceborne GaN Solid-State Power Amplifier for BeiDou Navigation Satellite System

IEEE Transactions on Aerospace and Electronic Systems, 2022
This article describes the design, testing, and space qualification of a 150-W high-power and high-efficiency GaN solid-state amplifier (SSPA) used in the BeiDou Navigation Satellite System (BDS).
X. Jing, Shichang Zhong, Hailong Wang, F. You   +3 more
semanticscholar   +1 more source

Distributed Timekeeping in BeiDou Inter-Satellite Link Network

IEEE Communications Letters, 2022
Equipped with inter-satellite links (ISLs), BeiDou-3 satellites are able to operate autonomously in case of ground facility malfunction. To provide reliable positioning, navigation and timing service during autonomous operation, satellites need to ...
Suyang Liu, Xiye Guo, Jun Lai, Jun Yang
semanticscholar   +1 more source

A Novel BeiDou Satellite Transmission Framework With Missing Package Imputation Applied to Smart Ships

IEEE Sensors Journal, 2022
Obtaining voyage data through a vessel monitoring system (VMS) and transmitting it to a remote monitoring center through satellites is an important link to realize the information perception of smart ships.
Sheng Liu, Di Wu, Hongfang Sun, Lanyong Zhang   +3 more
semanticscholar   +1 more source

Discussions of a2-Drift Variations of BeiDou-3 Satellite Rubidium Atomic Clocks

IEEE Transactions on Instrumentation and Measurement, 2022
Slow and significant stochastic variations named “a2-drift” variations are observed in this contribution, which are discovered during the estimation of frequency aging of BeiDou-3 rubidium (Rb) clocks. The magnitude of the variations suffered on BeiDou-3
Yuexin Ma, Chengpan Tang, Xiaogong Hu, Zhiqiao Chang, Yufei Yang, Jianhua Yang   +5 more
semanticscholar   +1 more source