GB/T 27920.1-2011Specifications for digital aerial photography - Part 1: Frame digital aerial photography (English PDF)
数字航空摄影规范 第1部分：框幅式数字航空摄影
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 30, 2011
Implementation date
February 1, 2012
Scope
GB/T 27920.1-2011 is the English-translated version of 数字航空摄影规范 第1部分：框幅式数字航空摄影.
GB/T 27920.1-2011 lays down the technical requirements for carrying out aerial photography with a frame digital air camera, the methods for checking the resulting work and the requirements for organising and accepting the results.
Clause 1 limits the part to frame digital aerial photography carried out for 1:500 to 1:50 000 topographic maps and image maps, and states no exclusion beyond that.
It is the first of the two parts of GB/T 27920, the second part covering push-broom digital aerial photography.
After the scope, the normative references and the terms, the body runs through clause 4 on aerial plan and aerial design and clause 5 on flight quality and image quality requirements, and then two clauses on quality assurance of the results and on organising and accepting them whose headings the draft prints only in scrambled form.
Clause 2 cites GB/T 14950-2009, GB/T 6962 and GB/T 15661. On top of the terms taken from GB/T 14950-2009, clause 3 defines comprehensive resolving power, comprehensive distortion, mosaic image, aerial vulnerability and relative vulnerability.
Seven informative annexes, A to G, add a general formula for aerial photography, an aerial flight recorder table, an aerial data transfer deed and an aerial identification form, plus three further figures and sheets whose titles the draft leaves scrambled.
The page credits the part to the State Bureau of Surveying and Mapping and places it with the National Standardization Technical Committee on Geographical Information (SAC/TC230). It was issued on 30 December 2011 and has applied since 1 February 2012.
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Document preview — GB/T 27920.1-2011
National Standard of the People's Republic of China
- ICS
- 07.040
- Classification
- A 77
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 aerial plan and aerial design
- 5 flight quality and image quality requirements
- 7 outcome organize and acceptance
- Appendix A (informative) aerial A general formula
- Annex B (informative) Table 14 aerial flight recorder
- Annex C (informative) aerial data transfer deed
- Annex D (informative) aerial identification form
- Annex E (informative) route, in conjunction with FIG 18 photo
- Annex F (informative) completion of subject area
- Annex G (informative) Air imaging center in conjunction with FIG sheet
Foreword
GB/T 27920 "digital aerial photography norm" is divided into two parts.
--- Part 1. Box web digital aerial photography --- Part 2. push-broom digital aerial photography This section GB/T Part of 127,920. This section drafted in accordance with GB/T 1.1-2009 given rules. This part by the State Bureau of Surveying and Mapping.
This part of the National Standardization Technical Committee on Geographical Information (SAC/TC230) centralized.
This section is drafted. a new map measured (Beijing) Technology Co., Ltd. Remote Sensing, National Geomatics Center of China's surveying and mapping Institute.
1 Scope
This section GB/T 27920 requirements using frame-spoke air camera to carry out the technical requirements of aerial photography to check the results of methodological quality And the outcome of finishing acceptance requirements.
This section applies to measurement system 500 to 1.50000 topographic map and image map of the web frame digital aerial photography work.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 14950-2009 Photogrammetry and Remote Sensing term
GB/T 6962 1.500,1.1000,1.2000 scale topographic maps by aerial photography norm
GB/T 15661 1.5000 1.10000 1.25000 1.50000 1.100000 topographic map of aerial photography norm
3 Terms and Definitions
GB/T 14950-2009 and as defined in the following terms and definitions apply to this document.
3.1 Comprehensive resolving power compositiveresolution
Box web digital air camera system to measure linear objective lens imaging spectroscopic detector system for black and white and of equal width resolution Ability.
3.2 Comprehensive Distortion
Box web digital air camera system, image distortion caused by the lens, the spectrometer detector caused by, including radial distortion, eccentric distortion, Imaging surface deformation.
3.3 Mosaic image
Virtual Imaging Box web digital air camera systems, synchronous acquisition by multiple cameras or multiple imaging detectors images by geometry and radiation treatment Projected image formed equivalent center.
3.4 Aerial vulnerability
Aerial photography, the photograph or image overlap is too small or no overlap. [GB/T 14950-2009, the definition 4.49]
3.5 Relative vulnerability
Aerial photography, the photograph or image overlap and heading off to the overlapping portion is less than the predetermined threshold.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 25 pages — is available in the English PDF.
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Related Standards
GB/T 14950-2009 — Terms of photogrammetry and remote sensing
GB/T 15661-2008 — Specifications for aerial photography of 1:5 000 1:10 000 1:25 000 1:50 000 1:100 000 topographic maps
GB/T 27920.2-2012 — Specifications for digital aerial photography - Part 2: Push-broom digital aerial photography
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GB/T 27920.1-2011
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