Results 1 to 10 of about 16,382,382 (288)

Space-Borne GNSS-R Ionospheric Delay Error Elimination by Optimal Spatial Filtering [PDF]

Sensors, 2020
Global Navigation Satellite System Reflectometry (GNSS-R) technology is a new and promising remote sensing technology, especially satellite-based GNSS-R remote sensing, which has broad application prospects. In this work, the ionospheric impacts on space-
Qiuyang Zhang, Yang Liu, Junming Xia
doaj   +2 more sources

Low-Cost GNSS-R Altimetry on a UAV for Water-Level Measurements at Arbitrary Times and Locations [PDF]

Sensors, 2019
Together with direct Global Navigation Satellite System (GNSS) signals, the signals reflected at the water surface can be received by an unmanned aerial vehicle (UAV).
Kaoru Ichikawa, Takuji Ebinuma, Masanori Konda, Kei Yufu   +3 more
doaj   +2 more sources

Implementation of a Testbed for GNSS-R Payload Performance Evaluation [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
The functional performance of space-borne instruments must be validated on ground before and after satellite integration. The effects of radio-frequency interference are also becoming more important, even in protected bands for earth observation. In this
Adrian Perez, Joan Francesc Munoz-Martin, Jorge Querol, Hyuk Park, Adriano Camps   +4 more
doaj   +5 more sources

FY3E GNOS II GNSS Reflectometry: Mission Review and First Results

Remote Sensing, 2022
FengYun-3E (FY3E), launched on 5 July 2021, is one of China’s polar-orbiting meteorological satellite series. The GNOS II onboard FY3E is an operational GNSS remote sensor that for the first time combines GNSS radio occultation (GNSS RO) and GNSS ...
Feixiong Huang, Peng Zhang, Xiangguang Meng   +2 more
exaly   +3 more sources

Review of GNSS-R Technology for Soil Moisture Inversion

Remote Sensing
Soil moisture (SM) is an important parameter in water cycle research. Rapid and accurate monitoring of SM is critical for hydrological and agricultural applications, such as flood detection and drought characterization.
Changzhi Yang, Kebiao Mao, Zhonghua Guo, Jiancheng Shi, Sayed M. Bateni, Zijin Yuan   +5 more
doaj   +2 more sources

Modeling and Simulation of GNSS-R Observables With Effects of Swell [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Global navigation satellite system-reflectometry (GNSS-R) has attracted much attention in remote sensing, such as sea wind speed detection, soil moisture, and sea ice.
Bowen Li, Lei Yang, Bo Zhang, Dongkai Yang, Di Wu   +4 more
doaj   +2 more sources

Performance Validation of Sea Surface Wind Speed Retrieval Algorithms and Products From the Chinese Tianmu-1 Constellation GNSS-R: First Results on Comparison With Other Wind Speed Products

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The Tianmu-1 constellation is mainly based on BeiDou/Global Navigation Satellite System radio occultation (GNSS-RO) and BeiDou/GNSS reflectometry (GNSS-R) remote sensing technology, which can simultaneously achieve integrated stereo detection of GNSS-RO ...
Xinyu Liu, Jinwei Bu, Xiaoqing Zuo, Ziyi Wang, Qiulan Wang, Qihan Wang, Chaoying Ji, Youwen Zhao, Hui Yang, Xin He   +9 more
doaj   +2 more sources

An SDR-Based GNSS-R CubeSat Payload: Hardware Development and Optimization of the Onboard Processing

IEEE Access
Recent developments in high-performance Software Defined Radios (SDRs) and their utilization in CubeSat payloads are transforming Earth Observation (EO), including Microwave Radiometers, Global Navigation and Satellite System – Radio Occultations (
Shah Zahid Khan, Yasir M. O. Abbas, Edwar Edwar, Abdul-Halim Jallad, Adriano Camps   +4 more
doaj   +2 more sources

Simulation of Multi-satellite GNSS Reflected Signals and Design of Simulator [PDF]

Journal of Geodesy and Geoinformation Science, 2021
Using GNSS-R technology for remote sensing of surface parameters has become a new trend in the field of remote sensing. With the rapid development of GNSS-R technology, GNSS-R simulation has become one of the new hot spots. Now the researches of the GNSS-
Bowen LI,Dongkai YANG,Bo ZHANG
doaj   +1 more source

Signal-to-Noise Ratio Analyses of Spaceborne GNSS-Reflectometry from Galileo and BeiDou Satellites

Remote Sensing, 2021
In recent years, Global Navigation Satellite System Reflectometry (GNSS-R) technology has made considerable progress with the increasing of GNSS-R satellites in orbit, the improvements of GNSS-R data processing technology, and the expansion of its ...
Yang Nan, Shirong Ye, Jingnan Liu, Bofeng Guo, Shuangcheng Zhang, Weiqiang Li   +5 more
doaj   +1 more source