GB/T 37151-2018 in English
VALIDSpecifications for remote sensing image product based on the national topographic maps subdivisions
- Issued on:2018-12-28
- Implemented on:2018-12-28
- File Format:PDF
- Delivery:Via email within 5 business days
$418.00
《GB/T 37151-2018基于地形图标准分幅的遥感影像产品规范》由TC327（全国遥感技术标准化技术委员会）归口，主管部门为中国科学院。
Introduction
Analysis of the core content of the standard
This standard innovatively combines the national basic scale topographic map tiling system (GB/T 13989) with remote sensing image products to establish a complete standardized production technology system. The main technical features include:
- The CGCS2000 coordinate system is used as the benchmark. According to the scale difference, Gauss-Krüger projection (3°/6° zoning) and conformal conic projection are used respectively.
- A three-part naming rule of frame number_satellite ID_sensor ID is defined (such as J50_L5_TM.tif)
- The ground resolution of the image must meet the calculation result of the formula G=2.54×10⁻²/(D×S)
Comparison of key technical indicators
| Scale | Plane position accuracy (m) | Ground resolution (m) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Flatlands/Hills | Mountains/Mountains | 300 DPI | 200 DPI | 100 DPI | |||||||
| 1:5 000 | 2.50 | 3.75 | 0.4 | 0.5 | 1.0 | ||||||
| 1:25 000 | 12.50 | 18.75 | 2.0 | 2.5 | 6.0 | ||||||
| Inspection items | Technical methods | Tolerance requirements |
|---|---|---|
| Edge accuracy | Image feature point matching | ≤2 pixels |
| Color balance | Histogram analysis | Adjacent map sheets ΔDN≤15 |
| Metadata integrity | Schema validation | Required fields 100% |
Technology evolution analysis
Innovations of this standard compared with traditional remote sensing image product specifications:
- Frame system fusion: For the first time, the coordinate unification of remote sensing image and topographic map frames
- Dynamic resolution: Establish a quantitative relationship between print DPI-scale-ground resolution
- Extensible metadata: Support the entry of sensor parameters of domestic satellites (Gaofen series, resource series)
In the future, it is recommended to add frame processing specifications for new types of data such as oblique photography and SAR images.
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