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Study of high-precision time transfer method enhanced by PPP-AR/PPP-RTK
Measurement Science and TechnologyAbstract With the ongoing advancements in the Global Navigation Satellite System (GNSS), the technology for high-precision time transfer facilitated by GNSS has also become increasingly refined. This paper aims to investigate the contribution of information-enhanced GNSS PPP to time transfer performance, with a focus on the comprehensive
Mingyue Liu +6 more
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The Measurement of Wave Parameter Based on PPP Method
2013Filtering method was selected to eliminate the impact of long-term errors which include the tide, systematic errors and other factors based on GPS Precise Point Positioning (PPP) data processing method, and accurate wave height was get finally. Fast Fourier Transform (FFT) analysis method was used to calculate average period of the wave, the average ...
Huayi Zhang +3 more
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PPP method for analysis of electromagnetic fields in inhomogeneous media
IEE Proceedings H Microwaves, Antennas and Propagation, 1993A perturbation/iterative method (the PPP method) is proposed for the analysis of electromagnetic fields in inhomogeneous media. It consists of increasing the values of the parameters the medium at all points in small increments, starting from their vacuum values, and computing the induced sources by means of the total field (the incident field, plus ...
B.D. Popović, B.M. Notaroš
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Analysis of Velocity Estimation Methods Based on BDS PPP
2019Position difference, Doppler observation and time-differenced carrier phase (TDCP) are three commonly used velocity estimation methods. Since the average velocity of two epochs is obtained both in the position difference and TDCP velocity estimation, the accuracy is affected by the carrier’s kinematics, large deviation will appear in high dynamic ...
Shunli Duan +3 more
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A comparison of three PPP integer ambiguity resolution methods
GPS Solutions, 2013Precise point positioning (PPP) integer ambiguity resolution with a single receiver can be achieved using advanced satellite augmentation corrections. Several PPP integer ambiguity resolution methods have been developed, which include the decoupled clock model, the single-difference between-satellites model, and the integer phase clock model.
Junbo Shi, Yang Gao
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Two colorful applications of the
AbstractTwo different color‐related applications of the Pariser‐Parr‐Pople method are described. The first one deals with an explanation of the UV‐visible absorption spectrum of the curcumin pigment in turmeric and the color change of curcumin upon addition of OH−.
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A Projection Pursuit Combined Method for PPP Risk Evaluation
2017Risk assessment is very crucial to the building and operation of PPP (Public-Private-Partnership) project in its long-term cooperation during the long life circle. Based on the risk factors and their influences, the traditional risk assessment method of PPP project is achieved by the experts experience, Therefore, the evaluation result is subjective ...
Xinli Zhang, Tianjin Wang, Sihan Li
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A New Method for Real-Time PPP Correction Updates
2016Real-time Precise Point Positioning (PPP) is expected to find more and more applications with various precise satellite orbit and clock products becoming more easily and reliably available. A crucial aspect for current real-time PPP system is the transmission of precise satellite orbit and clock correction data to the PPP users at a high update rate ...
Yang Gao, Wentao Zhang, Yihe Li
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ALGORITHM FOR SELECTING METHODS FOR FINANCING PPP CLIMATE PROJECTS
EKONOMIKA I UPRAVLENIE: PROBLEMY, RESHENIYAThe article examines current issues of financing climate PPP projects. Materials and methods. The article uses international databases and a systematic review of materials from Russian and international scientific publications. Results. Methods are classified, principles are defined, and an algorithm for selecting methods for financing climate PPP ...
Sergey G. Sternik, Stanislav Yu. Semenov
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