38 Result(s)
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Chapter and Conference Paper
Analysis of GPS for Monitoring Rain and Snow Weather
With the continuous improvement of the theory of the Ground-based GPS Meteorology and GPS-MR technology, and increases of the global GPS tracking station. Making the Ground-based GPS as a new kind of sensor in...
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Chapter and Conference Paper
The Identification of Satellite Clock Noise Based on LAG1 Autocorrelation of Overlap** Samples
Atomic clock is composed of various components of electronic devices, and its comprehensive effect of the internal and external environment makes it get easily affected by many kinds of noise. The random part ...
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Chapter and Conference Paper
Characteristic of GPS SNR and It’s Application for Snow Depth Monitoring Analysis
With the continuous construction of GNSS and the continuous improvement of GNSS reflection signal theory, GNSS-MR technology based on signal-to-noise ratio has gradually become an emerging field of GNSS for su...
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Chapter and Conference Paper
Deformation Monitoring and Precision Analysis Based on BDS/GPS Dual System Combination
To test the accuracy and reliability of BDS/GPS dual system combination in geological hazard monitoring, the key technologies of BDS and GPS dual mode fusion relative positioning are analyzed. Through the pro...
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Chapter and Conference Paper
The Tropospheric Product Combination of iGMAS Analysis Centers and the Analysis of Their Precision
Several analysis centers (AC) and a product integration and service center (ISC) have been built by the international GNSS continuous Monitoring and Assessment System (iGMAS) currently. ISC analyzes the qualit...
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Chapter and Conference Paper
The Short-Term Forecast of BeiDou Satellite Clock Bias Based on Wavelet Neural Network
According to nonlinear and nonstationary characteristics of BeiDou satellite clock bias time series, this paper proposed a method using the wavelet neural network (WNN) based on the first-order difference of a...
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Chapter and Conference Paper
Validation of GPS36 Satellite CODE Precise Orbit with SLR Measurements
In this paper, SLR observations are used to validate the CODE precise orbit of GPS36 satellite. First, the comparison of orbit validation is performed by using the SLR normal point (NP) data provided by EDC an...
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Chapter and Conference Paper
An Initial Analysis and Assessment on Final Products of iGMAS
The international GNSS Monitoring and Assessment System (iGMAS) is developed as a service platform for multi-GNSS and the Product Integration and Service Center (ISC) is the products reprocess center which pro...
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Chapter and Conference Paper
Precision Evaluation and Consistency Analysis of iGMAS Orbit and Clock Products
This paper evaluates the precision of iGMAS orbit and clock products, and analyzes their consistency. By the methods of orbit comparisons and day boundary discontinuities (DBDs), the iGMAS orbit precision is e...
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Chapter and Conference Paper
The Orbit and Clock Combination of iGMAS Analysis Centers and the Analysis of Their Precision
Several analysis centers (AC) and a product integration and service center have been built by the international GNSS continuous Monitoring and Assessment System (iGMAS) currently. Product integration and servi...
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Chapter and Conference Paper
Prediction and Analysis of Chinese Earth Rotation Parameters Based on Robust Least-Squares and Autoregressive Model
Earth Rotation Parameters (ERP) are the necessary parameters to achieve mutual conversion of the celestial reference frame and earth reference frame. It is the requirements of national economic construction an...
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Chapter and Conference Paper
The iGMAS Combined Products and the Analysis of Their Consistency
Several analysis centers (AC) and a product integration and service center have been built by the international GNSS continuous Monitoring and Assessment System (iGMAS). Product integration and service center ...
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Chapter and Conference Paper
Design and Application of Indoor Geographical Information System
For the present situation of shortage in GIS indoor theories and insufficiency in indoor GIS applications, a set of indoor GIS research theories, indoor map cartography specifications, and related technologies...
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Chapter and Conference Paper
Prediction of Polar Motion Based on Combination of Weighted Least-Squares and Autoregressive Moving Average
High accurate prediction of polar motion has important significant and useful value for high-precision space navigation and positioning. In this paper, the weighted least-squares (WLS) is proposed to use to pr...
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Chapter and Conference Paper
Fusion Positioning of BDS/GPS Based on Variance Component Estimation and Its Application for Geodetic Control Network
Beidou Satellite Navigation System (BDS), developed by China, is an independent satellite navigation system, which is recognized as one of the four major Global Navigation Satellite System (GNSS) in the world....
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Chapter and Conference Paper
Earth Rotation Parameters Determination Using BDS and GPS Data Based on MGEX Network
Earth rotation parameters (ERPs) are necessary parameters to achieve mutual transformation of the celestial reference frame and earth-fix reference frame. They are very important for satellite precise orbit de...
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Chapter and Conference Paper
GOCE Precise Orbit Determination Using Pure Dynamic Method and Reduced Dynamic Method
The basic principles and mathematical models for pure dynamic orbit determination and reduced dynamic orbit determination are reviewed briefly. The GOCE orbit determination accuracies of pure dynamic method (P...
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Chapter and Conference Paper
The Method of Earth Rotation Parameter Determination Using GNSS Observations and Precision Analysis
Based on the principle of GNSS observation, the linear observation equations of earth rotation parameters (ERP) estimation using GNSS data are deduced. The general solution and precision evaluation function ar...
