The paper presents an experimental study of the standalone positioning performance of a high‐end survey grade and a mass‐market dual‐frequency GNSS receiver in covered agricultural environments (CAEs) comparing an ETFE polytunnel and a Cambridge‐style glass greenhouse against an open‐field baseline.
Alex Schofield +6 more
wiley +1 more source
A Practical Adaptive Clock Offset Prediction Model for the Beidou-2 System
The predicted navigation satellite clock offsets are crucial to support real-time global navigation satellite system (GNSS) precise positioning applications, especially for those applications difficult to access the real-time data stream, such as the low
Beizhen Xu +5 more
doaj +1 more source
BeiDou Geostationary Satellite Code Bias Modeling Using Fengyun-3C Onboard Measurements
This study validated and investigated elevation- and frequency-dependent systematic biases observed in ground-based code measurements of the Chinese BeiDou navigation satellite system, using the onboard BeiDou code measurement data from the Chinese ...
Kecai Jiang +4 more
doaj +1 more source
Sensitivity of GNSS-R spaceborne observations to soil moisture and vegetation [PDF]
Global navigation satellite systems-reflectometry (GNSS-R) is an emerging remote sensing technique that makes use of navigation signals as signals of opportunity in a multistatic radar configuration, with as many transmitters as navigation satellites are
Camps Carmona, Adriano José +6 more
core +2 more sources
A Novel Ionospheric Disturbance Index to Evaluate the Global Effect on BeiDou Navigation Satellite System Signal Caused by the Moderate Geomagnetic Storm on May 12, 2021. [PDF]
He L +5 more
europepmc +1 more source
Koneohjaus ja laserkeilausaineiston tuottaminen mallintamiseen [PDF]
Työn tavoitteena oli perehtyä koneohjauksen perusteisiin, paikannusmenetelmiin sekä ohjeistuksiin ja vaatimuksiin. Tavoitteena oli myös tarkastella, millä menetelmillä tuotettua laserkeilausaineistoa voidaan hyödyntää koneohjauksessa käytettävän ...
Toivanen, Tuomo
core
High-Accuracy Phase Frequency Detection Technology Based on BDS Time and Frequency Signals
For the time and frequency signals of Beidou satellites, a high-accuracy phase frequency detection technology based on phase group synchronization is proposed.
Baoqiang Du, Lanqin Tan
doaj +1 more source
BDS Empowers Smart Water Conservancy Construction: Current Status, Challenges, and Future Opportunities [PDF]
The BeiDou Navigation Satellite System (BDS) is a critical spatial-temporal infrastructure in China, and since its inception, it has been widely applied across various socio-economic sectors.
Z. Pang +5 more
doaj +1 more source
Mass-Market Receiver for Static Positioning: Tests and Statistical Analyses [PDF]
Nowadays, there are several low cost GPS receivers able to provide both pseudorange and carrier phase measurements in the L1band, that allow to have good realtime performances in outdoor condition.
Cina, Alberto, Marucco, G., Piras, Marco
core
For the last two decades, the American GPS and Russian GLONASS were the basic systems used in global positioning and navigation. In recent years, there has been significant progress in the development of positioning systems.
Zbigniew Siejka
doaj +1 more source

