Results 41 to 50 of about 910 (213)

Tropospheric tomography – integration of ground- and space-based GNSS observations [PDF]

, 2023
On the way transmitter-receiver, the Global Navigation Satellite Systems (GNSS) signal is attenuated and delayed by the presence of water vapor. This information serves as the input to the GNSS tomography - a robust technique in water vapor estimation ...
Hanna, Natalia, Weber, Robert
core   +1 more source

Evaluation of Geometric and Atmospheric Doppler for GNSS-RO Payloads

AUT Journal of Electrical Engineering, 2016
To reduce the sampling rate in global navigation satellite system (GNSS)-radio occultation receivers, it is essential to establish a suitable estimation of Doppler frequency from the received signal in the satellite onboard receiver. This receiver is usually located on low earth orbit satellite and receives GNSS satellites signal in the occultation ...
L. Mohammadi, S. Amiri, G.R. Mohammadkhani   +2 more
openaire   +2 more sources

GNSS Remote Sensing:Overview and selected recent developments [PDF]

, 2022
Ponencia expuesta online en el 8th International Radio Occultation Working Group Meeting (2021) celebrado del 7 al 9 de abrilGround and satellite based GNSS Remote Sensing (GNSS-RS) developed during the recent two decades into a very powerful and ...
Dick, Galina, Kepkar, A., Masters, D., Arras, C., Asgarimehr, Milad, Cardellach, Estel, Mänel, B., Zus, Florian, Unwin, M., Wickert, Jens, Schmidt, Thomas, Healy, S., Lonitz, K.   +12 more
core  

Processing multiple GNSS RO data using FSI and ROPP: results from the ROMEX [PDF]

Atmospheric Measurement Techniques
Global Navigation Satellite System (GNSS) Radio Occultation (RO) is a vital technique in atmospheric remote sensing, providing all-weather, high-resolution vertical observations that support numerical weather prediction (NWP) and atmospheric research. To
Y. Chen, X. Zhou, X. Jing, S.-P. Ho, X. Shao, T.-C. Liu   +5 more
doaj   +1 more source

Tropical tropopause in Tibet: Insights from ground‐based global navigation satellite system and space‐based radio occultation observations

Meteorological Applications, 2022
Changes in the tropopause can explain regional and global weather and climate. In Tibet, there are few radiosonde stations, and the detection height is not high enough.
Guangwei Jiang, Yingying Shan, Chunxi Guo, Hong Zhao, Bin Wang, Dajiang Zhao   +5 more
doaj   +1 more source

Performance assessment of radio occultation data from GeoOptics by comparing with COSMIC data

Earth, Planets and Space, 2022
Responding to the ever-growing demand for environmental information, the National Oceanic and Atmospheric Administration (NOAA) seeks to enter into contracts to purchase Global Navigation Satellite System (GNSS) radio occultation (RO) observations ...
Hyeyeon Chang, Jiyun Lee, Hyosang Yoon, Y. Jade Morton, Alex Saltman   +4 more
doaj   +1 more source

A Machine Learning-Based Method for Wind Fields Forecasting Utilizing GNSS Radio Occultation Data

IEEE Access, 2022
With the development of computer technology and expanding environmental issues, machine learning has received more and more attention in the field of weather forecasting.
Xuezhao Chu, Weihua Bai, Yueqiang Sun, Wei Li, Congliang Liu, Hongqing Song   +5 more
doaj   +1 more source

Supervised Detection of Ionospheric Scintillation in Low-Latitude Radio Occultation Measurements

Remote Sensing, 2021
Global Navigation Satellite System (GNSS) Radio Occultation (RO) has provided high-quality atmospheric data assimilated in Numerical Weather Prediction (NWP) models and climatology studies for more than 20 years.
Vinícius Ludwig-Barbosa, Thomas Sievert, Anders Carlström, Mats I. Pettersson, Viet T. Vu, Joel Rasch   +5 more
doaj   +1 more source

Review of Assimilating Spaceborne Global Navigation Satellite System Remote Sensing Data for Tropical Cyclone Forecasting

Remote Sensing
Global Navigation Satellite System (GNSS) Radio Occultation (RO) and GNSS Reflectometry (GNSS-R) are the two major spaceborne GNSS remote sensing (GNSS-RS) techniques, providing observations of atmospheric profiles and the Earth’s surface. With the rapid
Weihua Bai, Guanyi Wang, Feixiong Huang, Yueqiang Sun, Qifei Du, Junming Xia, Xianyi Wang, Xiangguang Meng, Peng Hu, Cong Yin, Guangyuan Tan, Ruhan Wu   +11 more
doaj   +1 more source

Tackling cancer stemness with nanotechnology in the era of precision medicine

BMEMat, EarlyView.
Precise customization of nanoparticles (NPs) enables active targeting of cancer stem cells (CSCs), thereby improving drug delivery and therapeutic efficacy. NP‐based probing enhances CSC detection through imaging and liquid biopsy, whereas diverse therapeutic payloads improve therapeutic outcomes.
Shaolei Guo, Shun Yao, Lihui Meng, Chunyuan Chen, Yuechu Lucinda Lu, Rong Lu, Kashif Rafiq Zahid, Umar Raza, Qingzhi Wu, Wenli Chen   +9 more
wiley   +1 more source