Results 121 to 130 of about 619 (172)

Improving zenith wet delay interploation by utilizing tropospheric gradients

, 2018
Zus, F., Dousa, J., Kacmarik, M., Balidakis, K., Wickert, J.   +4 more
openaire   +1 more source

Continuous High-Precision Positioning in Smartphones by FGO-Based Fusion of GNSS-PPK and PDR. [PDF]

Micromachines (Basel)
Magsi AH, Díez LE, Knauth S.
europepmc   +1 more source

A new Egyptian Grid Weighted Mean Temperature (EGWMT) model using hourly ERA5 reanalysis data in GNSS PWV retrieval. [PDF]

Sci Rep
Sleem RE, Abdelfatah MA, Mousa AE, El-Fiky GS.   +3 more
europepmc   +1 more source

Assimilation of ground-based GNSS data using a local ensemble Kalman filter. [PDF]

Sci Rep
Shao C, Nerger L.
europepmc   +1 more source

Long-period microseismicity reveals cryptic earthquake-triggered fluid activity can facilitate caldera eruptions. [PDF]

Nat Commun
Song Z, Bell AF, LaFemina PC, Butcher S, Ruiz M, Hernández S, Gregg PM, Tan YJ.   +7 more
europepmc   +1 more source

An Investigation of Real-Time Galileo/GPS Integrated Precise Kinematic Time Transfer Based on Galileo HAS Service. [PDF]

Sensors (Basel)
Xu L, Chen S, An Y, Shen P, Xiao X, Chen Q, Wei J, Chen Y, Yu Y.   +8 more
europepmc   +1 more source

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GPS-derived zenith tropospheric delay assimilation into numeric atmosphere model

SPIE Proceedings, 2014
© 2014 SPIE. The total zenith tropospheric delay (ZTD) is an important parameter of the atmosphere and directly or indirectly reflects the weather processes and variations. This paper presents a hardware and software complex for continuous measurements and prediction of atmospheric thermodynamics and radiowaves refraction index.
Khutorova O., Krasnov V., Jouravlev A., Khutorov V.   +3 more
openaire   +3 more sources

Tropospheric zenith delay monitoring in GPS precise point positioning

SPIE Proceedings, 2009
Precise point positioning (PPP) has been demonstrated to be a powerful sensor to monitor tropospheric zenith delay (TZD). In the PPP, some unmodelled biases still remain in the GPS observables and will inevitably degrade the precision of tropospheric zenith delay estimation.
Qing-lin Zhu, Zhen-sen Wu, Zhen-wei Zhao
openaire   +1 more source

Evaluation of zenith tropospheric delays estimated by different regression models

2022
Yapay zekâ ve makine öğrenimi alanındaki gelişmeler, GNSS uygulamalarındaki sorunlara alternatif çözümler sunmakta veya mevcut çözümlerin verimliliğini artırmaya imkân sağlamaktadır. GNSS’de karşılaşılan birçok hata vardır ve bu hatalar kullanıcılar için problem oluşturmaktadır. Troposferik gecikme bunlardan birisidir.
AKAR, Ali Utku, İNAL, Cevat
openaire   +2 more sources