GB/T 39396.1-2020Quality requirements for international GNSS monitoring and assessment system (iGMAS)—Part 1: Observation data (English PDF)
全球连续监测评估系统（iGMAS）质量要求 第1部分：观测数据
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 19, 2020
Implementation date
June 1, 2021
Scope
GB/T 39396.1-2020 is the English-translated version of 全球连续监测评估系统（iGMAS）质量要求 第1部分：观测数据.
GB/T 39396.1-2020 is the Chinese standard "Quality requirements for international GNSS monitoring and assessment system (iGMAS)—Part 1: Observation data".
Its scope clause reads: This part of GB/T 39396 specifies the requirements for the GNSS observation data quality index of the Global Continuous Monitoring and Evaluation System (iGMAS) tracking station, Evaluation items and observation data requirements and evaluation methods.
This part is applicable to iGMAS survey-type GNSS receiver development and index verification, tracking station location, observation data quality evaluation and analysis, etc. Its clauses include terms, definitions and abbreviations.
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Document preview — GB/T 39396.1-2020
National Standard of the People's Republic of China
- ICS
- 49.020
- Classification
- V 04
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope1
- 2 Normative references1
- 3 Terms, definitions and abbreviations1
- 3.1 Terms and definitions1
- 3.2 Abbreviations2
- 4 Observation data quality index requirements2
- 4.1 Data integrity rate2
- 4.2 Cycle slip ratio2
- 4.3 Multipath error2
- 4.4 Pseudorange noise2
- 4.5 Carrier Phase Noise3
- 4.6 Carrier to Noise Ratio3
- 5 Evaluation items and observation data requirements3
- 6 Evaluation method3
- 6.1 Data integrity rate3
- 6.2 Cycle slip ratio4
- 6.3 Multipath error5
- 6.4 Pseudorange noise6
- 6.5 Carrier phase noise6
- 6.6 Carrier-to-noise ratio7
- Appendix A (Normative Appendix) GNSS satellite signal carrier frequency8
- Appendix B (informative appendix) Dual-frequency combination frequency selection9
1 Scope
This part of GB/T 39396 specifies the requirements for the GNSS observation data quality index of the Global Continuous Monitoring and Evaluation System (iGMAS) tracking station,
Evaluation items and observation data requirements and evaluation methods.
This part is applicable to iGMAS survey-type GNSS receiver development and index verification, tracking station location, observation data quality evaluation and analysis, etc.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 39267-2020 Beidou satellite navigation terminology
3 Terms, definitions and abbreviations
3.1 Terms and definitions
The following terms and definitions defined in GB/T 39267-2020 apply to this document.
3.1.1 data observation
iGMAS tracking station GNSS receiver recorded measurement data.
Note. Contains data such as pseudorange, carrier phase, Doppler shift and signal strength.
3.1.2 Observation data integrity rate
The receiver observes the ratio of the actual epoch data volume to the theoretical epoch data volume of the satellite.
3.1.3 Gross error
Outlier error.
Note. Make a series of observations under the same observation conditions, the absolute value of which exceeds the measurement deviation of the tolerance.
3.1.4 Cycle slip ratio
In a certain period of time, the ratio of the actual epoch data volume of the receiver observation data to the cycle slip epoch metadata volume.
Note. Reflects the average number of epochs observed during cycle slips.
3.1.5 Receiver clock jump
In order to keep the synchronization accuracy of the receiver's internal clock and GNSS within a certain range, the receiver manufacturer controls the receiver clock error to not exceed
Clock jump inserted at a certain threshold.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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