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Requirements of remote sensing data distribution and user service for land observation satellite
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GB/T 34514-2017
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Basic data | Standard ID | GB/T 34514-2017 (GB/T34514-2017) | | Description (Translated English) | Requirements of remote sensing data distribution and user service for land observation satellite | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | V70 | | Classification of International Standard | 49.020 | | Word Count Estimation | 9,949 | | Date of Issue | 2017-11-01 | | Date of Implementation | 2018-05-01 | | Regulation (derived from) | National Standard Announcement 2017 No. 29 | | 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 | GB/T 34514-2017: Requirements of remote sensing data distribution and user service for land observation satellite
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Requirements of remote sensing data distribution and user service for land observation satellite
ICS 49.020
V70
National Standards of People's Republic of China
Land observation satellite remote sensing data distribution and
User service requirements
2017-11-01 release
2018-05-01 Implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Published by China National Standardization Administration
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by China Aerospace Science and Technology Corporation.
This standard is under the jurisdiction of the National Aerospace Technology and Application Standardization Technical Committee (SAC/TC425).
This standard was drafted. China Resources Satellite Application Center, 21st Century Space Technology Application Co., Ltd.
The main drafters of this standard. Chen Weirong, Wen Qiang, Liu Guodong, He Jianjun, Zeng Yong, Li Yutang, Qin Jingfang, Zhu Hua.
Land observation satellite remote sensing data distribution and
User service requirements
1 Scope
This standard specifies the requirements for the distribution of terrestrial observation satellite remote sensing data, service requirements, service procedures, user management requirements, and other related requirements.
Related to technical support and technical services.
This standard applies to the domestic remote sensing data distribution and user service standardization management of land observation satellites (hereinafter referred to as satellites).
The distribution of remote sensing satellite data products and user services can be referred to.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 14950 Terminology for Photogrammetry and Remote Sensing
GB/T 17694 Geographic Information Terminology
GB /Z 28586 Geographic information network-based data distribution specification
GB/T 32453 Product classification and classification rules for satellite earth observation data
3 terms and definitions
The terms and definitions defined in GB/T 14950, GB/T 17694, GB /Z 28586, and GB/T 32453 as well as the following apply to this document
In order to facilitate the use, certain terms and definitions in GB/T 17694 are repeatedly listed below.
3.1
Dataproduct
A data set or series of data sets consistent with a data product specification.
[GB/T 17694-2009, definition B.107]
3.2
Datadistribution
The process by which a data provider provides satellite data products to users.
3.3
Archived data
Satellite data collected and archived.
3.4
Programming data
Plan the collected satellite data according to user needs.
3.5
Recording time
The moment when the satellite collects data from the ground target.
3.6
Rational polynomial coefficient
RPC
A sensor-independent general-purpose imaging geometry model is a fitting form of the sensor's strict geometric model.
3.7
Emergency requirement
To meet the demand for time-sensitive satellite data such as natural disasters and emergencies.
4 Acronyms
The following abbreviations apply to this document.
BigTIFF. BigTagImageFileFormat
GeoTIFF. Georeferenced TagImageFileFormat
JPEG. Joint PhotographicExpertsGroup
XML. Extensible Markup Language
5 Data distribution requirements
5.1 Data Product Type
Satellite remote sensing data products should mainly include the following products.
a) Optical remote sensing data products.
--- Full color data products;
--- Multispectral data products;
--- Hyperspectral data products;
--- Infrared data products;
--- Other optical remote sensing data products.
b) Microwave remote sensing data products.
--- Active microwave data products;
--- Passive microwave data products.
c) Other remote sensing data products. such as geophysical data products.
5.2 Data Product Classification
The products are classified according to the processing level of satellite data products, and are divided into 0 to 6 products. details as follows.
a) Level 0 (L0) is the original data product obtained by processing the data received by the ground station through de-formatting, etc .;
b) 1 (L1) and 2 (L2) products are basic data products that are widely used in various industries and fields.
Division of processing levels for geometric correction;
c) 3 (L3), 4 (L4), 5 (L5), 6 (L6) products belong to value-added data products in various industries and fields, and are based on application requirements
Data products obtained by integrating processing with ground control points or digital elevation models and thematic application information.
5.3 Distribution
5.3.1 Optical Remote Sensing Data Products
The distribution of optical remote sensing data products should generally include the following.
--- Optical image data;
--- Metadata files, including auxiliary data such as radiation calibration coefficients, satellite attitude orbit information, and image geographic location;
--- thumbnail (quick view);
--- RPC parameter file (optional for L1 products).
5.3.2 Microwave Remote Sensing Data Products
The distribution of microwave remote sensing data products should generally include the following.
--- Microwave data;
--- Metadata files, including auxiliary calibration data such as radiation calibration coefficients, satellite attitude orbit information, polarization mode, and geographic location
--- Thumbnails (quick view).
5.3.3 Other remote sensing data products
The distribution content of other remote sensing data products such as geophysics should generally include remote sensing data and metadata files.
5.4 Distribution format
Image-type remote sensing data products are usually distributed in scenes, frames or designated areas.
a) Image data is in standard GeoTIFF format, JPEG2000 format or BigTIFF format;
b) the metadata file is in XML format;
c) The thumbnails are in JPEG format.
Non-image-type remote sensing data products are distributed as uncompressed raw files. Advanced products and user-defined products can be customized according to user requirements.
Format for distribution.
5.5 Product Nomenclature
The name of the remote sensing data product should generally include the following information and be named in the following order.
a) satellites;
b) sensors;
c) collection time;
d) basic position;
e) product level;
f) Uniquely identified serial number.
5.6 Distribution method
5.6.1 Online distribution
The online distribution mainly includes the following.
a) dedicated line push;
b) Network distribution.
5.6.2 Offline Distribution
Offline distribution mainly refers to mobile storage media distribution.
6 Data service requirements
6.1 Archive data service processes and requirements
6.1.1 Archive data service process
The network service process for archiving data is shown in Figure 1.
Ordering and data download. The provider distributes the archived remote sensing data products online or offline according to the order submitted by the user. with
Providers need to manage user, order, and data product metadata.
Figure 1 Archive data network service process
6.1.2 Archive data retrieval conditions
The search conditions should pay attention to the user's search habits, and place the search conditions commonly used by users in a prominent position. Search conditions include but do not
Limited to.
a) satellites;
b) sensors;
c) collection time;
d) area;
e) cloud cover;
f) product level;
g) Swing angle.
6.1.3 Requirements for displaying archived data retrieval results
The retrieval results should visually show the information that the user is most concerned about, and meet the following requirements.
a) Display the search results in the form of entries, and display the total number of entries in the search results;
b) display the location information in the form of a map, and the location information is displayed on the map in the form of a vector;
c) The information that should be clearly displayed in the search results includes satellites, sensors, acquisition time, latitude and longitude information, etc.
6.2 Programming data service process and requirements
6.2.1 Programming Data Service Process
The service flow of programming data is shown in Figure 2. The user submits a satellite programming application, and the provider performs satellite orbits according to the user's application
Calculate and feed back the results of satellite transit calculations to users, and both parties will jointly confirm the satellite programming tasks. Providers implement satellite data collection,
Data processing, data distribution, and data cataloging, archiving and distribution.
Figure 2 Programming data service process
6.2.2 Programming data service requirements
For satellites in orbit, the data provider shall provide programming data services according to user requirements and meet the following requirements.
a) Provide satellite orbit calculation services and satellite programming services in accordance with users' requirements for area, time and resolution;
b) The user should submit a programming application 7 working days before the implementation of the programming task;
c) timely feedback on satellite transit and satellite programming to users, generally feedback within 3 working days;
d) If the user has a request to cancel the satellite programming service, it should be submitted at least 3 working days before the implementation of satellite programming;
e) Satellite programming should take full account of weather factors, and in the case where weather forecast information does not meet imaging requirements, it should be determined in consultation with the user
Whether to implement programming.
6.3 Emergency data service process and requirements
6.3.1 Emergency data service process
The emergency data service process is as follows.
a) Obtain emergency data demand information and start the emergency response mechanism;
b) Dispatching satellites in orbit for emergency mission planning, emergency command generation and betting, and feedback of planning results to users;
c) provide users with emergency archived data products;
d) emergency processing data, generating emergency data products and providing them to users;
e) Terminate emergency data services according to the degree of emergency development or instructions from superiors.
6.3.2 Emergency data service requirements
Emergency data services should ensure timeliness, including satellite dispatch, data acquisition, data processing, data provision and other links. Received should
After urgent needs, services should meet the following requirements.
a) Provide users with archived data required for emergency within 2h;
b) satellite emergency observation instructions developed within 30 minutes;
c) Provide users with services in a timely, adequate and sustainable manner.
6.4 Other requirements for data services
6.4.1 Data Product Release Cycle
L1 and L2 data products are usually published on the data distribution service website on the day of data acquisition, and the release delay should not exceed 3 hours.
Working day.
6.4.2 Data Product Supply Cycle
For archived data, generally should be provided within 48h.
For satellite programming services, after the satellite acquires data and receives and processes it on the ground, it can provide it according to the archived data.
6.4.3 Data Product Temporary Storage Period
For data ordered online by users through the data distribution service website, a temporary storage period of data of not less than 7 natural days is provided.
6.4.4 Technical Document Download Service
Provides technical file download services related to satellite and data products, which generally include.
a) Basic introduction of satellites and sensors;
b) product manuals;
c) absolute radiation calibration coefficient;
d) sensor spectral response function;
e) the irradiance of the solar spectrum at the top of the sensor's atmosphere;
f) Other relevant technical documents.
Satellite-related technical documentation should be provided within 30 working days after the satellite is delivered for use, and absolute radiation calibration coefficients are provided at least annually
once.
6.4.5 Technical consulting services
Provide consulting services based on telephone, Internet and other methods. Service information such as hotline and email address are published on the website. User inquiry
Questions are answered within two working days.
6.5 User Registration Service
6.5.1 Support the registration of domestic citizens and legal entities.
6.5.2 The main information of individual user registration includes. name, gender, ID type and number, contact information, region and industry.
6.5.3 Institutional user registration main information includes. institution name, institution legal person, institution organization code, region and industry.
6.5.4 The data provider shall keep the user information strictly confidential.
6.6 Security and confidentiality requirements
For security and confidentiality requirements, refer to relevant national administrative measures.
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