Results 91 to 100 of about 2,505 (209)

Satellite-Ground Two-Way Measuring Method and Performance Evaluation of BDS-3 Inter-Satellite Link System

open access: yesIEEE Access, 2020
From November 2017 to December 2018, Beidou navigation satellite system (BDS) completed the basic system construction of Beidou-3 system (BDS-3) and opened the initial service, BDS-3 satellites are equipped with Ka-band inter-satellite link (ISL ...
Yan Bai   +3 more
doaj   +1 more source

Assessment of positioning performances in Italy from GPS, BDS and GLONASS constellations [PDF]

open access: yes, 2018
The use of multiple GNSS constellations has been beneficiary to positioning performances and reliability in recent times, especially in low cost mass-market setups.
Ambrogio Maria Manzino   +2 more
core   +2 more sources

Investigation of the Contribution of Five Broadcast Ionospheric Models (GPSK, NTCMG, NEQG, BDGIM, and BDSK) and IRTG to GNSS Positioning During Different Solar Activities in Solar Cycle 25

open access: yesSpace Weather, Volume 22, Issue 7, July 2024.
Abstract Additional ionospheric information is essential for mitigating errors in single‐frequency (SF) Global Navigation Satellite Systems (GNSS) positioning. The increasing number of low‐cost dual‐frequency (DF) receiver users faces limitations in tracking DF observables compared to traditional geodetic receivers. Consequently, ionospheric correction
Min Li   +5 more
wiley   +1 more source

Multi-GNSS integer ambiguity resolution enabled precise positioning [PDF]

open access: yes, 2015
In this PhD thesis multi-Global Navigation Satellite System (GNSS) positioning results when combining the American Global Positioning System (GPS), Chinese BeiDou Navigation Satellite System (BDS), European Galileo and Japanese Quasi-Zenith Satellite ...
Odolinski, Robert
core  

China's Ground‐Based Space Environment Monitoring Network—Chinese Meridian Project (CMP)

open access: yesSpace Weather, Volume 22, Issue 7, July 2024.
Abstract Monitoring and investigation of the solar‐terrestrial space environment is a huge challenge for humans in space age. To this end, China has established the Ground‐based Space Environment Monitoring Network, namely Chinese Meridian Project (CMP).
Chi Wang   +6 more
wiley   +1 more source

Investigation of Precise Relative Positioning through Varying Equipment Grades [PDF]

open access: yes, 2022
In this thesis, three methodologies are investigated in order to provide precise relative positioning knowledge between two dynamic platforms as equipment grade is varied.
Campos-Vega, Christian
core  

Berkeley‐RWAWC: A New CYGNSS‐Based Watermask Unveils Unique Observations of Seasonal Dynamics in the Tropics

open access: yesWater Resources Research, Volume 60, Issue 7, July 2024.
Abstract The UC Berkeley Random Walk Algorithm WaterMask from CYGNSS (Berkeley‐RWAWC) is a new data product designed to address the challenges of monitoring inundation in regions hindered by dense vegetation and cloud cover as is the case in most of the Tropics.
Tianjiao Pu   +5 more
wiley   +1 more source

Distortion‐less carrier phase tracking space‐time adaptive processor based on power inversion criterion for GNSS anti‐jamming receiver

open access: yesIET Radar, Sonar &Navigation, Volume 18, Issue 5, Page 754-764, May 2024.
A distortion‐less carrier phase tracking space‐time PI algorithm is proposed. The main novelty is that the proposed algorithm keeps the coefficients of the temporal taps as real values by imposing constraints on the weights of the antenna array. Abstract Space‐time adaptive processor (STAP) has been widely used for global navigation satellite system ...
Yaoding Wang
wiley   +1 more source

Exploring innovative applications of 5G in aviation medical rescue

open access: yesHong Kong Journal of Emergency Medicine, Volume 31, Issue 2, Page 84-88, April 2024.
Abstract Objective To explore the application and advantages of 5G technology in aeromedical rescue. Methods Through the analysis of 11 rescue cases, especially two cases of 5G rescus cases, such as remote video consultation, 5G module equipment, vital signs data return, and Beidou high‐precision positioning.
Wei Han   +8 more
wiley   +1 more source

Method and Validation of Real‐Time Global Ionosphere Modeling Constraint by Multi‐Source GNSS/LEO Data

open access: yesSpace Weather, Volume 22, Issue 4, April 2024.
Abstract This study applies the zero‐differenced integer ambiguity method, named PPP‐Fixed, to extract real‐time ionospheric data and eliminate the latencies of rapid/final Global Ionosphere Maps (GIMs). The PPP‐Fixed method is also used to derive ionospheric data for post‐processed GIM generation, named SGG Post‐GIM, combined with low earth orbit ...
Jun Chen   +5 more
wiley   +1 more source

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