GB/T 18314-2024
Specifications for survey and measurement of global navigation satellite system (English Version)
- Standard No.
- GB/T 18314-2024
- Language
- Chinese, English version preview
- Release Date
- 2024
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 18314-2024
- Replace
- GB/T 18314-2009
- Scope
- This document stipulates the requirements for setting up a control network using Global Navigation Satellite System (GNSS) static measurement technology, including the layout requirements, measurement methods, accuracy indicators, and technical requirements. This document is applicable to the design, deployment, and data processing of various national and regional GNSS control networks.
- Introduction
Analysis of the core content of the standard
Technological evolution and major updates
Compared with the 2009 version, the 2024 version of the standard has the following major upgrades:
- The name of the standard is expanded to Global Navigation Satellite System (GNSS) Measurement Specification
- Added special measurement requirements for the Beidou system (Clause 4.1, 10.1.2)
- Using Point mean error as the basis for accuracy classification (5.3.2)
- Added the calculation formula for the mean error of baseline measurement (12.2.5)
Accuracy level classification system
Level Horizontal component error (mm) Vertical component error (mm) Purpose Grade A ≤2 ≤3 Global Geodynamics Research Grade B ≤5 ≤10 Regional deformation monitoring Grade C ≤10 ≤20 Urban benchmark framework
Instrument and Equipment Requirements
Class B network receiver must meet the following requirements:
- Multi-mode and multi-frequency (supports Beidou/GPS, etc.)
- Carrier phase observation accuracy ≤3mm+0.5ppm
- Equipped with choke antenna
Meteorological instruments need to be calibrated regularly, and the measurement range of ventilation psychrometer is -10℃~+45℃ (Appendix C)
Key technologies for synchronous observation
Baseline solution quality indicators:
- Data rejection rate ≤20% (Class A/B)
- Asynchronous loop closure error ≤3√nσ (n is the number of edges)
- Multipath effect value <0.5m
Using RINEX 3.04 format to store raw data (12.3.1)
Implementation suggestions
Key points for marker stone burial
- Center mark error of bedrock marker ≤2mm (8.2.3)
- Frozen areas must go through one freeze-thaw period to stabilize (8.2.7)
- The marker stone is imprinted with a warning sign of "National Facility" (8.3.1)
Data processing flow
- Baseline solution: A/B level must use precise ephemeris
- Network adjustment: 2000 National Geodetic Coordinate System as the benchmark
- Result acceptance: Implemented in accordance with GB/T 24356
GB/T 18314-2024 Referenced Document
- CH/T 1001 General rules for technical summaries of surveying and mapping
- CH/T 1004 General rules for technical design of surveying and mapping
- GB/T 12897 Specifications for the first and second order leveling
- GB/T 12898 Specifications for the third and fourth order leveling
- GB/T 17942 Specifications for national triangulation
- GB/T 24356 Quality inspection and acceptance of surveying and mapping results
- GB/T 28588 Specifications for the continuously operating reference station using global navigation satellite system
- GB/T 35767 Specifications for basic product of the reference stations using global navigation satellite system
- GB/T 39616 Specification for network real-time kinematic（RTK） surveys based on the reference stations using global navigation satellite system
GB/T 18314-2024 history
- 2024 GB/T 18314-2024 Specifications for survey and measurement of global navigation satellite system
- 2009 GB/T 18314-2009 Specifications for global positioning system(GPS)surveys
- 2001 GB/T 18314-2001 Specifications for global positioning system (GPS) surveys