With the successful global networking of Beidou satellite navigation system, Beidou system has been able to provide all-weather navigation, positioning and timing services to users worldwide. In order to compare and analyze the positioning performance of BDS-3 with GPS and their combinations under observation environment of woods, based on the unified GPS/BDS-3 combined positioning spatio-temporal datum, a GPS/BDS-3 combined pseudo-range single-point positioning observation model is established, the positioning solution results are solved by the least squares method, and the SPP data processing software (LsmSPP) is developed based on Visual Studio 2022 platform using C/C++ programming language. The experimental results show that the BDS-3 system is better than the GPS system in tracking satellites under observation environment of woods, and the BDS-3 pseudo-range single-point positioning accuracy is better than 2.50m in the E direction, 2.15m in the N direction, and 5.98m in the vertical direction, which is slightly worse than the GPS/BDS-3 combined positioning accuracy in the E and N directions, but slightly better than the dual-system combined positioning accuracy in the vertical direction, and the positioning accuracy of BDS-3 system is better than that of GPS system in all directions.
Aiming at the problem of low efficiency and automation of CORS massive data precision processing, an automated batch processing method for CORS massive data is proposed. Based on the Bash programming language, an automated batch script program for CORS massive data is designed and built. Through the examples in the paper, it is verified that the script of the proposed method is feasible and effective and has certain practical value for the application of power CORS massive data precision processing technology.
KEYWORDS: Algorithm development, Data modeling, Software development, Statistical analysis, Visual process modeling, Data analysis, 3D modeling, Visualization, Visual analytics, 3D image processing
The amount of engineering volume estimation is crucial for cost decision of regulation consumption project of construction and demolition waste. In view of the fact that the traditional tool software because of the disadvantage of algorithm model encapsulation, it is difficult to meet the data analysis requirements for regulation consumption project of construction and demolition waste, the algorithm model for regulation consumption project of construction and demolition waste is proposed based on the depth analysis of convex hull polygon generation algorithm, D-TIN model construction algorithm and triangle volume estimation algorithm, and the analysis software named as CWVMS for regulation consumption project of consumption and demolition waste is designed and developed via c# programming language based on the development platform of visual studio 2015. Through the calculation and analysis of engineering example, the correctness of function module design of the CVWMS software is verified, and the proposed algorithm model is effective. The digitization data analysis tool of the volume estimation for regulation consumption project of construction and demolition waste is provided in this paper.
Sensor technology applied in dynamic measurement in recent years become the mainly focus subject of attention. In this
paper, the high-frequency data collected by two kinds of sensors from vibration sensor and GPS receiver are
comparatively analyzed. The integrated scheme of dynamic measurement is proposed based on the high-frequency data
for vibration sensor and GPS receiver. The result of experiment is shown that the above sensors with the some same
characteristics based on the advantages of the sensors applied in the scheme. Finally, the feasibility and effectiveness of
the integrated scheme for the vibration sensor and GPS receiver is verified in the dynamic measurement experiment.
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