GB21139-2007

Basic requirements for standard data of fundamental geographic information

基础地理信息标准数据基本规定

GB 21139-2007 é uma norma nacional chinesa obrigatória vigente: Basic requirements for standard data of fundamental geographic information. Setor: Máquinas. Foco: Segurança de produtos. Entrada em vigor: 1 de mar. de 2008.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard is applicable to the production, certification, and utilization of standard data for fundamental geographic information in China. It covers spatial positioning frameworks and spatial analysis bases, including natural and social elements like water systems, transportation, and boundaries. This standard is mandatory for all entities involved in fundamental geographic data processing. It references standards such as GB/T 13989 and GB/T 20257.1.

Requisitos técnicos

The standard specifies the mathematical foundation requirements, including coordinate systems, elevation benchmarks, and map projection methods. It mandates the use of specific national coordinate systems and defines the required scale series ranging from 1:500 to 1:1,000,000. Producers must adhere to the prescribed projection and sheet numbering rules. Regarding data content, the standard outlines requirements for various geographic elements. This includes survey control points, water systems, settlements, transportation networks, pipelines, and administrative boundaries. It also covers topography, vegetation, place names, digital orthophoto maps, and cadastral survey data. The standard sets strict requirements for the production process. It mandates comprehensive project design documents, proper data sources, and rigorous quality control procedures, including process checks and final inspections. All production must follow approved technical routes and utilize calibrated equipment. Finally, it establishes the data certification requirements. Data must be certified by authorized institutions based on the data's scale and classification. Producers must provide surveying qualification certificates, design documents, and signatures from registered surveyors. Certification is mandatory before data can be officially recognized.

Métodos de ensaio

The standard outlines evaluation procedures focusing on quality control during the production process. This includes verifying the compliance of project design documents, checking the accuracy of data sources against national standards, and conducting process inspections and final acceptance reviews. Additionally, it requires the verification of measuring instruments calibration and the validation of data certification documents by authorized agencies.

Perguntas frequentes

What products are regulated under GB 21139-2007?

It regulates fundamental geographic information data, including digital elevation models, orthophotos, and vector data of natural and social elements used as a spatial positioning framework.

Is GB 21139-2007 a mandatory standard?

Yes, all technical content in this standard is mandatory for the production, certification, and use of fundamental geographic information standard data in China.

Who is responsible for data certification according to this standard?

Certification is handled by authorized institutions. High-level control point data and small-scale data (1:25,000 to 1:1,000,000) are certified by agencies authorized by the national surveying department, while larger scale data is certified by provincial-level agencies.

The summary above provides a high-level overview of GB 21139-2007. To ensure complete compliance for your geographic information products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 21139-2007 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Gestão
CCS: A75
ICS: 07.040
Órgão competente: Ministry of Natural Resources (Surveying, Mapping and Geography)
Comitê técnico: National Technical Committee on Geographic Information of Standardization Administration of China