Results 31 to 40 of about 1,062 (188)
Estimation of Precipitable Water Vapor Using the GPS [PDF]
Journal of Astronomy and Space Sciences, 1999 The radio waves transmitted from GPS satellites is delayed by the troposphere as they propagate to Earth-based GPS receivers. The troposphere delay is usually divided into two parts, the dry delay due to the atmospheric gases and the wet delay due to the
Yong-Jin Moon +2 more
doaj
Method for improving the accuracy of calculating the tropospheric delay in satellite radio navigation using Kalman filtering [PDF]
E3S Web of Conferences, 2023 A method is proposed for improving the accuracy of calculating the tropospheric delay in satellite radio navigation using Kalman filtering with a combination of calculation using one of the standard troposphere models.
Tryapitsyn Valery, Dubinko Tatyana
doaj +1 more source
Use of Multi-Squint InSAR to Separate Surface Deformation from Troposphere Delay
Remote SensingTropospheric delays can be the leading source of error in spaceborne interferometric synthetic aperture radar (InSAR) measurements. Here, we find that the non-uniform troposphere delay features are dependent on the squint angles used for repeat-pass ...
Xiaoqing Wu +2 more
doaj +1 more source
Tropospheric wet path-delay measurements [PDF]
IEEE Transactions on Antennas and Propagation, 1982 A dual-channel microwave radiometer measuring the sky brightness temperature at the frequencies 21.0 and 31.4 GHz, an infrared spectral hygrometer (IRSH) measuring the ratio of the radiation from the sun at the wavelengths 931 and 880 nm, and radiosondes have been used simultaneously to determine the excess path length due to water vapor (wet path ...
openaire +1 more source
Simultaneous Retrieval of PWV and VTEC by Low‐Cost Multi‐GNSS Single‐Frequency Receivers
Earth and Space Science, 2019 Precipitable water vapor (PWV) and ionospheric vertical total electron content (VTEC) are two essential components of space‐atmosphere parameters. The zenith troposphere delay can be converted into PWV, which plays a crucial role in meteorological ...
Chuanbao Zhao +4 more
doaj +1 more source
Remote Sensing, 2023 With the global service of the BeiDou Navigation Satellite System (BDS), the Galileo Navigation Satellite System (Galileo), and the modernization of the Global Positioning System (GPS), achieving high-precision positioning through triple-frequency-only ...
Xifeng Dang +5 more
doaj +1 more source
INSAR ATMOSPHERIC DELAY MIGITIGATION BY GPS; CASE STUDY IZMIT EARTQUAKE INTERFEROGRAMS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 The Propagation delay when radar signals travel from the troposphere has been one of the major limitations for the applications of high accuracy Interferometric Synthetic Aparture Radar (InSAR).
M. U. Altın, E. Tari, L. Ge
doaj +1 more source
RESEARCH ON ZENITH TROPOSPHERIC DELAY MODELING OF REGIONAL CORS NETWORK [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 By calculating the zenith troposphere information from 11 reference stations of the CORS network in Guilin City, Guangxi Province in 2018 by GAMIT10.6 as the reference values, analyzing the relationship between the zenith troposphere and the elevation ...
Y. F. Yang +4 more
doaj +1 more source
Analysis of influence of ionosphere and troposphere model on RAIM availability of COMPASS
Tongxin xuebao, 2015 The ionosphere and troposphere are main error sources of satellite navigation system measurement and main factors of COMPASS availability. The influence of the ionosphere and troposphere delay error model on the RAIM availability of COMPASS is analyzed ...
Wei-dong JIAO +2 more
doaj +2 more sources
Deep Space Network Measurement Model Development for Interplanetary Mission [PDF]
Journal of Astronomy and Space Sciences, 2004 The DSN(Deep Space Network) measurement model for interplanetary navigations which is essential for precise orbit determination has been developed. The DSN measurement model produces fictitious DSN observables such as range, doppler and angular data ...
Hae-Yeon Kim +10 more
doaj +1 more source