A5006413981- GNSS positioning and interference
- Ionosphere and magnetosphere dynamics
- Soil Moisture and Remote Sensing
- Geophysics and Gravity Measurements
- Precipitation Measurement and Analysis
- Atmospheric Ozone and Climate
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Meteorological Phenomena and Simulations
- Ocean Waves and Remote Sensing
- Earthquake Detection and Analysis
- Climate change and permafrost
- Cryospheric studies and observations
- Tropical and Extratropical Cyclones Research
- Geomagnetism and Paleomagnetism Studies
- Atmospheric aerosols and clouds
- Inertial Sensor and Navigation
- Solar and Space Plasma Dynamics
- Spacecraft Design and Technology
- Atmospheric chemistry and aerosols
- Methane Hydrates and Related Phenomena
- Hydrological Forecasting Using AI
- Climate variability and models
- Soil Geostatistics and Mapping
- Geophysical Methods and Applications
- Advanced Computational Techniques and Applications
Chinese Academy of Sciences
2016-2025
University of Chinese Academy of Sciences
2008-2025
National Space Science Center
2016-2025
Space Engineering University
2016-2025
University of Graz
2017-2024
Zhaoqing University
2019-2024
State Key Laboratory of Remote Sensing Science
2016-2024
China Meteorological Administration
2017-2022
Beijing Institute of Petrochemical Technology
2022
Institute of Atmospheric Physics
2017-2022
Abstract The Global Navigation Satellite Systems (GNSS), including the US’s GPS, China’s BDS, European Union’s Galileo, and Russia’s GLONASS, offer real-time, all-weather, any-time, anywhere high precision observations by transmitting L band signals continuously, which have been widely used for positioning, navigation timing. With development of GNSS technology, it has found that GNSS-reflected can be to detect Earth’s surface characteristics together with other opportunity. In this paper,...
FengYun-3E (FY3E), launched on 5 July 2021, is one of China’s polar-orbiting meteorological satellite series. The GNOS II onboard FY3E an operational GNSS remote sensor that for the first time combines radio occultation (GNSS RO) and reflectometry (GNSS-R). It has eight reflection channels can track specular points at same time, receiving reflected signals from multiple systems, including GPS, BeiDou Galileo. basic GNSS-R output generated by a 122 × 20 non-uniform delay-Doppler map whose...
From the viewpoint of earth system science, this paper discusses observation capability second-generation Chinese polar-orbiting, sun-synchronous operational meteorological satellite systems, Fengyun-3 (FY-3), based on function and performance test results from FY-3D in orbit. The FY-3 series satellites have numerous remote sensing instruments a wide range imaging sounding electromagnetic spectrometers onboard. These can obtain reflectivity data for land surface, soil, vegetation, water...
Abstract. The FY3 (Feng-Yun-3) GNOS (GNSS Occultation Sounder) mission is a GNSS (Global Navigation Satellite System) radio occultation of China for remote sensing Earth's neutral atmosphere and the ionosphere. will use both global positioning system (GPS) Beidou navigation satellite systems on Feng-Yun-3 (FY3) series satellites. first FY3-C was launched at 03:07 UTC 23 September 2013. developed by Center Space Science Applied Research, Chinese Academy Sciences (CSSAR). It provide vertical...
The Global Navigation Satellite System Occultation Sounder II (GNOS-II) payload onboard the Chinese Fengyun-3E (FY-3E) satellite is world’s first operational spaceborne mission that can utilize reflected signals from multiple navigation systems for Earth remote sensing. was launched into an 836-km early-morning polar orbit on 5 July 2021. Different GNSS show different characteristics in observations and thus require calibration methods. With average data latency of less than 3 h, many near...
The reflected GNSS signals at the L-band is significantly advantageous in soil moisture monitoring as they are sensitive to dielectric properties determined by volumetric water content of topsoil, and can penetrate vegetation, except very dense forests. Global Navigation satellite system Occultation Sounder (GNOS-II) with a reflectometry technique onboard Fengyun-3E (FY-3E) satellite, launched on 5 July 2021, first mission that receive Satellite System (GNSS) from GPS, BeiDou Galileo...
Abstract. As a new member of the space-based radio occultation sounders, GNOS (Global Navigation Satellite System Occultation Sounder) mounted on Fengyun-3C (FY-3C) has been carrying out atmospheric sounding since 23 September 2013. takes approximately 800 daily measurements using GPS Positioning System) and Chinese BDS (BeiDou navigation satellite) signals. In this work, refractivity profiles from were compared with ones obtained co-located ECMWF (European Centre for Medium-Range Weather...
The comprehensiveness of the raw input data and effectiveness feature engineering are two key factors affecting performance machine learning. To improve for Global Navigation Satellite System Reflectometry (GNSS-R) ocean wind speed retrieval, this article introduces a new structure, which is composed Delay-Doppler maps (DDM) all satellite receiver status (SRS) parameters. Then, to overcome difficulty handcrafted effectively fusion information DDM SRS, we presented heterogeneous multimodal...
Two different GNSS-R wind products are to be developed for the GNOS-II payload on FengYun-3E (FY-3E) satellite: A global product optimized low-to-medium speeds and a cyclone high in tropical extratropical cyclones. This paper presents comprehensive assessment of both Global Positioning System (GPS) Beidou (BDS) at below 25 m/s using its data first 6 months. Three datasets including European Centre Medium-Range Weather Forecasts (ECMWF) reanalysis, HY-2B scatterometer Soil Moisture Active...
Reflected global navigation satellite system (GNSS) signals from Earth surface can be received by receivers at low orbit for the remote sensing of geophysical parameters. While technique has been studied around 30 years, most early spaceborne GNSS reflectometry missions only adapted to receive GPS and studies reflected Galileo (GAL) in space are limited. The Navigation Satellite System Occultation Sounder II (GNOS-II) payload onboard FY-3E is first mission that operationally GPS, BeiDou...
Soil moisture is the most active part of terrestrial water cycle, and it a key variable that affects hydrological, bio-ecological, bio-geochemical processes. Microwave remote sensing an effective means monitoring soil moisture, but existing conventional radiometers single-station radars cannot meet scientific needs in terms temporal spatial resolution. The emergence GNSS-R (Global Navigation Satellite Systems Reflectometry) technology provides alternative method with high An important...
Global Navigation Satellite System Occultation Sounder II (GNOS II) is an integrated GNSS remote sensing instrument which combines POD (Precise Orbit Determination), Radio (GNSS-RO) and Reflectometry (GNSS-R). It will provide more higher quality radio occultation data new reflected signal Delay Doppler Mapping (DDM), compared with its predecessor GNOS were used in FY3C FY3D satellites. be on-board FY3E satellite since 2020 to monitor the ionosphere, neutral atmosphere, sea wave wind field of...
Vegetation is an important part of the terrestrial ecosystem and plays a vital role in global carbon cycle. Traditional remote sensing methods have certain limitations vegetation monitoring, development GNSS-R (Global Navigation Satellite System-Reflectometry) technology provides new complimentary method. With CYGNSS (Cyclone Global System) launch increased data acquisition, use spaceborne for monitoring has become research hotspot. However, due to complex characteristics vegetation, its...
Traditional ancient architecture is a symbolic product of cultural development and inheritance, with high social value. An automatic recognition model building types one possible application asymmetric systems, it will be great significance to able identify via machine vision. In the context Chinese traditional buildings, this paper proposes method based on improved Inception V3 model. Firstly, adds dropout layer between global average pooling SoftMax classification solve overfitting problem...
Sea surface height (SSH) serves as a fundamental geophysical parameter in oceanographic research. In 2023, China successfully launched the world’s first spaceborne interferometric GNSS-R (iGNSS-R) altimeter, which features dual-frequency multi-beam scanning, processing, and compatibility with three major satellite navigation systems: BeiDou Navigation Satellite System (BDS), Global Positioning (GPS), Galileo (GAL). This launch marked in-orbit validation of iGNSS-R altimetry technology. study...
The global navigation satellite system (GNSS) radio occultation (RO) technique is an atmospheric sounding that originated in the 1990s. data provided by this approach are playing a consistently significant role research and related applications. This paper mainly summarizes applications of RO to numerical weather prediction (NWP) generally specifically for tropical cyclone (TC) forecast outlines prospects technique. With advantages such as high precision accuracy, vertical resolution,...
The Global Navigation Satellite System Reflectometry (GNSS-R) technique can measure ocean surface winds and other geophysical parameters from forward scattered GNSS (GPS, BeiDou, Galileo, etc.) signals. However, most early spaceborne missions only captured GPS signals while the study of reflectometry using BeiDou (BDS-R) is limited. GNOS-II payload onboard China's FY-3E satellite has been operationally collecting a large number BDS-R data since July 10, 2021. BDS different in orbit, signal...
Abstract. The Global Navigation Satellite System (GNSS) Occultation Sounder (GNOS) is one of the new-generation payloads onboard Chinese FengYun 3 (FY-3) series operational meteorological satellites for sounding Earth's neutral atmosphere and ionosphere. GNOS was designed acquiring setting rising radio occultation (RO) data by using GNSS signals from both BeiDou (BDS) US Positioning (GPS). An ultra-stable oscillator with 1 s stability (Allan deviation) at level 10−12 installed on FY-3C GNOS,...