Results 21 to 30 of about 1,619 (201)
Impact of Tropospheric Delay Gradients on Total Tropospheric Delay and Precise Point Positioning
International Journal of Geosciences, 2016 GPS signals are electromagnetic waves that are affected by the Earth’s atmosphere. The Earth’s atmosphere can be categorized, according to its effect on GPS signals, into the ionosphere (ionospheric delay) and neutral atmosphere (tropospheric delay).
Mohamed Elsobeiey, Mohamed El-Diasty
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Establishment of a Real-Time Local Tropospheric Fusion Model
Remote Sensing, 2019 The tropospheric delay is one major error source affecting the precise positioning provided by the global navigation satellite system (GNSS). This error occurs because the GNSS signals are refracted while travelling through the troposphere layer ...
Yibin Yao +4 more
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Remote Sensing, 2023 The delay caused by the troposphere is one of the major sources of errors limiting the accuracy of InSAR measurements. The tropospheric correction of InSAR measurements is important.
Qinghua Liu, Qiming Zeng, Zhiliang Zhang
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Earth, Planets and Space, 2023 A major source of error in interferometric synthetic aperture radar (InSAR), used for mapping ground deformation, is the delay caused by changes in the propagation velocity of radar microwaves in the troposphere.
Sardila Nurulhikmah Sailellah +1 more
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Atmosphere, 2022 Tropospheric delay information is particularly important for network RTK (Network Real-time Kinematic) positioning. Conventionally, tropospheric delay information at a virtual reference station (VRS) is obtained using the linear interpolation method (LIM)
Yifan Wang +4 more
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Remote Sensing, 2022 Accurate estimation of tropospheric delay is significant for global navigation satellite system’s (GNSS) high-precision navigation and positioning. However, due to the random and contingent changes in weather conditions and water vapor factors, the ...
Guolin Liu +6 more
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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 ...
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Ray‐traced tropospheric delays in VLBI analysis
Radio Science, 2012 We develop a ray‐tracing package for the calculation of path delays of microwave signals in the troposphere based on numerical weather models which we use for the determination of the delays of geodetic Very Long Baseline Interferometry (VLBI) observations.
Nafisi, V. +4 more
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A model for converging tropospheric delay corrections
Highlights in Science, Engineering and Technology, 2023 In response to the current problem that tropo-spheric delay correction is constrained by the measured meteorological parameters, resulting in low efficiency and limited application, this paper proposes a GE-Sa fusion model combining GPT2w and EGNOS models.
Ling Ling, Chenglin Cai
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The Effects of Higher-Order Ionospheric Terms on GPS Tropospheric Delay and Gradient Estimates
Remote Sensing, 2018 Atmospheric delays, e.g., ionospheric delay and tropospheric delay, are the dominant error sources for the Global Navigation Satellite System (GNSS), especially for Precise Point Positioning (PPP).
Zhiyu Zhang, Fei Guo, Xiaohong Zhang
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