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GB/T 17944-2018 English PDF

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GB/T 17944-2018: Specifications for the dense gravity measurement
Status: Valid

GB/T 17944: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 17944-2018English379 Add to Cart 4 days [Need to translate] Specifications for the dense gravity measurement Valid GB/T 17944-2018
GB/T 17944-2000English559 Add to Cart 3 days [Need to translate] Specifications for the dense gravity measurement Obsolete GB/T 17944-2000

PDF similar to GB/T 17944-2018


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Basic data

Standard ID GB/T 17944-2018 (GB/T17944-2018)
Description (Translated English) Specifications for the dense gravity measurement
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard A75
Classification of International Standard 07.040
Word Count Estimation 19,122
Date of Issue 2018-12-28
Date of Implementation 2018-12-28
Older Standard (superseded by this standard) GB/T 17944-2000
Quoted Standard GB/T 12897; GB/T 20256; GB/T 24356; CH/T 1001; CH/T 1004
Regulation (derived from) National Standard Announcement No. 17 of 2018
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration
Summary This standard specifies the general rules, layout principles, gravity measuring instruments, gravity measurement, coordinate and elevation measurement, data processing, data collation and handover requirements for cryptographic gravity measurement on land. This standard applies to encrypted gravity measurements on land. Encrypted gravity measurements in other areas can be referenced.

GB/T 17944-2018: Specifications for the dense gravity measurement

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Specifications for the dense gravity measurement ICS 07.040 A75 National Standards of People's Republic of China Replace GB/T 17944-2000 Encrypted gravity measurement specification Published on.2018-12-28 2018-12-28 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General 2 4.1 Principle 2 4.2 Precision requirements 2 4.3 Measurement Benchmark 2 4.4 Inspection Acceptance, Quality Assessment and Technical Summary 2 5 layout principle 3 5.1 Basic Principles 3 5.2 Encryption point naming 4 5.3 Technical Design 4 6 Gravity measuring instruments 4 6.1 Selection of relative gravimeter 4 6.2 Inspection and adjustment of relative gravimeter 4 6.3 Performance test of relative gravimeter 5 6.4 Primary item scale factor calibration and inspection 6 7 Gravity measurement 6 7.1 Basic technical requirements 6 7.2 Gravity observation 7 7.3 Observation record 8 8 coordinates and elevation measurements 9 9 Data Processing 9 9.1 Line calculation 9 9.2 Gravity anomaly calculation 10 10 Information and submission 11 10.1 Data Sorting 11 10.2 Turn in the information 11 Appendix A (informative) Example of relative gravimeter observation record format 12 Appendix B (informative) Example of encrypted gravity measurement metadata 14 Appendix C (informative) Encrypted gravity measurement results are shown in Example 15

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 17944-2000 "Encryption Gravity Measurement Specification". Compared with GB/T 17944-2000, except for editorial modifications The main technical changes are as follows. --- Removed the astronomical measurement content in the.2000 edition; --- Added "terms and definitions"; --- Modified the main principles of encrypted gravity measurement; --- Revised the benchmark adopted in the.2000 edition; --- Modified the accuracy requirements for encrypted gravity measurement; ---Modified the technical requirements of the relative gravimeter; --- Added observation procedures, observation requirements and precautions for BURRIS, CG5, CG6 relative gravimeters; --- Increased the requirement for observation records; ---Modified the technical requirements for coordinate and elevation measurement; --- Modified the formula in data processing. This standard was proposed by the Ministry of Natural Resources of the People's Republic of China This standard is under the jurisdiction of the National Geographic Information Standardization Technical Committee (SAC/TC230). This standard was drafted. National Surveying and Mapping Geographic Information Bureau Surveying and Mapping Standardization Institute, the first geodetic survey team of the National Surveying and Mapping Geographic Information Bureau. The main drafters of this standard. Zhang Qingtao, He Zhitang, Kang Shengjun, Zhang Kun, Xing Lelin, Zhang Minli, Yan Jingxin, Wu Tong. The previous versions of the standards replaced by this standard are. ---GB/T 17944-2000.

Introduction

The main purpose of encrypted gravity measurement is to determine the fine distribution of the Earth's gravitational field, for geodesy, geophysics, geology, earthquakes. Earth's gravitational field data is provided by gravitational anomalies, elevation anomalies, and spatially disturbed gravitational fields required in fields such as science, oceanography, and space technology. this The main means of cryptographic gravity measurement in the standard is ground joint measurement with relative gravimeter, and gravity gravity measurement using aerial gravity measurement It shall be separately specified in the paragraph. Encrypted gravity measurement specification

1 Scope

This standard specifies the general rules, layout principles, gravity measuring instruments, gravity measurements, coordinates and elevations for cryptographic gravity measurements on land. Requirements for measurement, data processing, data collation and submission. This standard applies to encrypted gravity measurements on land. Encrypted gravity measurements in other areas can be referenced.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 12897 National First and Second Level Measurement Specifications GB/T 20256 National Gravity Control Measurement Specification GB/T 24356 quality inspection and acceptance of surveying and mapping results CH/T 1001 Surveying and Mapping Technology Summary Writing Regulations CH/T 1004 Surveying and Mapping Technology Design Regulations

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Gravity measurement Measuring techniques and methods for measuring gravitational acceleration. [GB/T 17159-2009, definition 5.59] 3.2 Relative gravity measurement gravitymeasurement Gravity measurements of gravitational acceleration are measured using a pendulum or relative gravimeter. [GB/T 17159-2009, definition 5.61] 3.3 Gravity point gravitypoint The point of gravity acceleration has been determined. [GB/T 17159-2009, definition 7.11] Note. Gravity points can be divided into. reference point, basic point, basic lead point, first-order point, first-order lead point, second-order point, and encryption point according to the level from high to low. 3.4 Gravity control point gravimetriccontrolpoint Provides a gravity point that calculates the value of gravity. [GB/T 17159-2009, definition 7.12] 3.5 Segment difference In the relative gravity measurement, the difference in gravity between two adjacent gravity points.

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