With the wide application of GNSS navigation and positioning technology in different fields and the rapid development of technology updates, higher requirements are put forward for engineering surveys in the design, construction, operation and management of large-scale engineering projects. Many surveying, surveying, planning, Municipal, transportation, railway, water conservancy and hydropower, construction, mining, road and bridge, land and resources, meteorology, earthquake and other industries need to apply high-precision satellite positioning technology and services in the process of large-scale project construction. The Global Navigation Satellite System (GNSS for short) represented by GPS is a comprehensive constellation system proposed by the European Union in the mid-1990s. System (GLONASS), China's Beidou second-generation global satellite positioning and navigation system (BDS) and the European Union's GALILEO satellite positioning system, etc. With the continuous improvement of the GPS system, the continuous refinement of various error correction models, the continuous update of data processing software, and the continuous improvement of GPS receivers, the degree of operation automation is getting higher and higher, tending to the development of "scientific fools", This makes it easier and more enjoyable for engineers and technicians to use GPS satellite positioning technology to carry out engineering surveys in the field, and high-precision GPS data processing and analysis in the industry has become one of the key technologies that key engineers and technicians urgently need to master. In order to deeply understand the development of satellite positioning technology and further promote the application of satellite positioning technology in large-scale engineering construction, it is easier for key engineering and technical personnel to master technical difficulties.
The first part, UBUNTU operating system introduction and basic use
Introduction, download, installation and basic usage of VMware Workstation
Download, installation and basic use of UBUNTU operating system (cd, ls, ln, gedit, chmod commands and operations)
Installation of UBUNTU operating system based on VMware Workstation
The second part, GAMIT/GLOBK software explanation and installation
GAMIT/GLOBK software explanation, download method, configuration
System configuration for installing GAMIT/GLOBK software under UBUNTU operating system (update, csh, gfortran, libX11-dev)
Installation of GAMIT/GLOBK software
GAMIT/GLOBK software path configuration (.bashrc) and testing (doy)
The third part, data acquisition and preprocessing
IGS station data acquisition (station data acquisition)
Data format conversion
TEQC data quality analysis
How to add domestic receiver antenna
Step-by-step operation of GAMIT software (command usage of step-by-step operation)
The fourth part, step-by-step "playing" GAMIT software
Standard RINEX file preparation ([Calculation example]: 4 observation periods of GNSS data of a project control network, national standard D level)
Key file preparation (sestbl., station.info, sittbl., lfile., lfile.apr) and detailed explanation
High-precision GNSS baseline processing ("hand in hand" teaching step-by-step operation commands)
Baseline quality assessment method ("four look", "repetitive calculation")
The fifth part, the application of GAMIT+ network adjustment software for high-precision Beidou/GNSS engineering control network data processing and accuracy evaluation
Construction Principles and Optimal Design of Frame Network Based on IGS Station
Access to IGS site data (GNSS observation data, 3D frame coordinates)
Geodetic Reference Frame (Datum Unification and Conversion of ITRF Series Frames and Reference Epochs)
[GNSS measurement reference frame and angle coordinate conversion software]
Interpretation of Global Positioning System (GPS) Measurement Specification (GB-T 18314-2009)
[Calculation example]: Construction of framework network in high-precision data processing of a Beidou/GNSS engineering control network
Part VI, "Playing" with TRACK software
TRACK module explanation
Track.cmd control strategy file
The operation process of the TRACK module ([Calculation example]: track_example explains in detail)
Part VII, step-by-step/batch processing "playing" with GLOBK software
Step-by-step operation of GLOBK software (basic commands and usage methods of step-by-step operation)
Introduction to globk_com.cmd control file
glorg_com.cmd control file introduction
Application of GLOBK software for time series analysis of station coordinates
Application of GLOBK software to analyze station velocity field (horizontal and vertical)
Batch processing (glred/globk, glorg) explanation
The basic process of operating GLOBK software by globk/glorg
[Calculation example]: GLOBK software comes with a detailed explanation of the calculation example
The eighth part, the application of GAMIT/GLOBK software for data analysis of a CORS station network (network adjustment, coordinate time series, coordinate adjustment solution, combined multi-day solution, etc.)
[Example data]: A certain CORS network year=2020~2022 doy=001~005 GNSS data
Step-by-step/batch processing (glred/globk, glorg) to operate GLOBK software to realize free net adjustment and constrained adjustment
Discussion on Time Series Analysis of Measuring Station Using GLOBK Software
Discussion on Analyzing Station Velocity Field (Horizontal and Vertical) Using GLOBK Software
Discussion on Combined Multi-Day Solution Using GLOBK Software
Part IX, Accuracy Analysis
Baseline Solution Accuracy Index Analysis
Point coordinate precision index analysis
Data processing report writing content seminar