GB/T 23709-2009Basic specifications for region quasi-geoid determination (English PDF)
区域似大地水准面精化基本技术规定
This is a limited preview
Buy now to download the full PDF (16 pages)
Need quotation for your management?
Get a formal quotation for GB/T 23709-2009 in 30 minutes.
Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 6, 2009
Implementation date
October 1, 2009
Scope
GB/T 23709-2009 is the English-translated version of 区域似大地水准面精化基本技术规定.
GB/T 23709-2009 is the Chinese standard "Basic specifications for region quasi-geoid determination". Its scope clause reads: 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. Its clauses include terms and definitions.
Found what you need?
Document preview — GB/T 23709-2009
National Standard of the People's Republic of China
- ICS
- 07.040
- Classification
- A 76
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 General
- 4.1 Regional Quasi - geoid reference base
- 4.2 Quasi-geoid accuracy and resolution
- 4.3 average gravity anomaly grid and resolution
- 4.4 digital elevation model (DEM) resolution and accuracy
- 4.5 abnormal height control point measurement accuracy
- 5 laid height anomaly control point
- 5.1 Technical Design
- 5.2 point and click control height anomaly buried stone
- 6 Field Observation
- 6.1 GPS observations
- 6.2 Leveling
- 6.3 gravimetry
- 7 Data Processing
- 7.1 height anomaly data processing control point
- 7.2 Quasi-geoid calculation
- 8 Quasi-geoid accuracy test
- 8.1 checkpoint laid Principle
- 8.2 checkpoint observation
- 8.3 checkpoint data processing
- 8.4 Quasi-geoid Precision Evaluation
- 9 results of inspection and acceptance
- 10 Achievements handed
- Appendix A (informative) abnormal height control point maximum spacing of adjacent calculation
- Annex B (informative) gravity reduction and gravity anomaly grid computing average
- Annex C (informative) Gravity Quasi - geoid calculation
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 high resolution residual gravity anomaly, then Lee […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.
Similar standards
How to Download GB/T 23709-2009
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB/T 10003-2026 — Biaxially oriented polypropylene (BOPP) film
GB/T 10004-2026 — Plastic/Plastic laminated films and pouches for packaging
GB/T 10007-2026 — Rigid cellular plastics - Determination of shear properties
Secure payment via Stripe
Payments accepted
GB/T 23709-2009
$285.00