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GB/T 23709-2009: Basic specifications for region quasi-geoid determination
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23709-2009 | English | 459 |
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Basic specifications for region quasi-geoid determination
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GB/T 23709-2009
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Basic data | Standard ID | GB/T 23709-2009 (GB/T23709-2009) | | Description (Translated English) | Basic specifications for region quasi-geoid determination | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A76 | | Classification of International Standard | 07.040 | | Word Count Estimation | 20,250 | | Date of Issue | 2009-05-06 | | Date of Implementation | 2009-10-01 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 6, 2009 (No. 146 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the country's national, provincial and urban areas geoid refinement accuracy, cloth measuring principle, data processing, precision inspection and so on. This standard applies to our national, provincial and city and other regional geoid refinement. | GB/T 23709-2009: Basic specifications for region quasi-geoid determination---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.
Basic specifications for region quasi-geoid determination
ICS 07.040
A76
National Standards of People's Republic of China
Regional quasi - geoid refinement of the basic technical requirements
Posted 2009-05-06
2009-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
Introduction Ⅳ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 General 2
4.1 Regional Quasi - geoid reference base 2
4.2 Quasi-geoid accuracy and resolution 2
4.3 average gravity anomaly grid and resolution 2
4.4 digital elevation model (DEM) resolution and accuracy 3
4.5 abnormal height control point measurement accuracy 3
Technical requirements 3 4.6 Instrument
5 laid height anomaly control point 3
5.1 Technical Design 3
5.2 point and click control height anomaly buried stone 4
4 6 Field Observation
6.1 GPS observations 4
6.2 Leveling 4
6.3 gravimetry 4
7 Data Processing 4
7.1 height anomaly data processing control point 4
7.2 Quasi-geoid calculation 5
8 Quasi-geoid accuracy test 5
8.1 checkpoint laid Principle 5
8.2 checkpoint observation 6
8.3 checkpoint data processing 6
8.4 Quasi-geoid Precision Evaluation 6
9 results of inspection and acceptance 6
10 Achievements handed 6
Appendix A (informative) abnormal height control point maximum spacing of adjacent calculation 7
Annex B (informative) gravity reduction and gravity anomaly grid computing average 8
Annex C (informative) Gravity Quasi - geoid calculation 10
Annex D (informative) like gravity and geoid height anomaly control network and multi-faceted polynomial function fitting 12
Foreword
The Standard Appendix A, Appendix B, Appendix C, Appendix D are informative annex.
This standard was proposed by the State Bureau of Surveying and Mapping.
This standard by the National Standardization Technical Committee on Geographical Information.
Drafting of this standard. Institute of Surveying and Mapping National Mapping Standardization Bureau, the State Bureau of Surveying and Mapping geodetic data processing centers, national groups
Foundation Geomatics Center.
The main drafters of this standard. Guo Chunxi, Shaw school year, Wang Bin, Zhang Lei.
Introduction
Regional quasi geoid is intended utilization of gravity data, terrain data, gravity field models and GPS/leveling results, mining
Physical geodesy theory and method, application remove - restore technique to determine the precise regional quasi - geoid. By similar geoid
Technology, the use of GPS technology combined with high accuracy and resolution quasi-geoid model, has become a way Leveling.
This standard is based on the national mandatory standards GB 22021-2008 "National Geodetic basic technical requirements" set forth in the national, provincial,
Cities like precision and basic technical indicators geoid, combined with our existing geoid like engineering achievements of experience, reference country
Research inside and outside the field, the development of this standards, specifications and guidelines for our regional quasi-geoid refinement.
Regional quasi - geoid refinement of the basic technical requirements
1 Scope
This standard specifies the national, provincial and urban areas of quasi-geoid refinement of accuracy, cloth measuring principle, data processing, accuracy inspection
And so on.
This standard applies to our national, provincial and city regional quasi-geoid refinement.
2 Normative references
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 12897 national one, second order leveling
GB/T 12898 national third and fourth order leveling
GB/T 17944 Specification encryption gravimetry
GB/T 18314 Global Positioning System (GPS) measurement specification
CH1002 mapping products for inspection, acceptance
CH1003 Plotting Product Quality Standards
CH/T 1004 mapping technology design requirements
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Normal to the surface from the end point consisting of ground points along the normal direction of gravity.
3.2
Quasi-geoid model uses the grid size.
3.3
Like the Earth geoid ellipsoid height.
3.4
Measured by the GPS geodetic height, normal height measurement of large sites measured by the standard.
3.5
The average digital model using gravity anomaly grid.
3.6
The first use of the Earth's gravity field model, digital terrain models and ground gravity data obtained in the area of \u200b\u200bhigh resolution residual gravity anomaly, then Lee
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