ISO 20208:2015 PDF

Space data and information transfer systems — Delta-DOR Raw Data Exchange Format

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Title (English):

ISO 20208:2015

Space data and information transfer systems — Delta-DOR Raw Data Exchange Format

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 39
Publication date:: August 11, 2015
Edition:: ISO IS 20208 edition 1 version 1
ICS:: 49.140

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Description (English):

Delta-DOR (Delta Differential One-Way Ranging) is a Very Long Baseline Interferometry (VLBI) technique that can be used in conjunction with Doppler and ranging data to improve spacecraft navigation by more efficiently determining spacecraft angular position in the plane of sky. It involves the use of multiple ground stations, possibly belonging to different agencies, for simultaneous acquisition of either spacecraft or quasar signals (see reference [D2]). This Delta-DOR Raw Data Exchange Format (RDEF) Recommended Standard specifies a standard format for use in exchanging Delta-DOR raw data among space agencies. Delta-DOR raw data exchange is required every time the data correlation involves at least one participating station not belonging to the agency responsible for the correlation. ISO 20208:2015 includes specifications on the parameter fields that the data format has been designed to meet. For exchanges where these specifications do not capture the needs of the participating agencies another mechanism may be selected.

Technical details

Technical committee: ISO/TC 20/SC 13 - Space data and information transfer systems
SKU: ISO 20208:2015

Abstract

Overview

ISO 20208:2015 - Space data and information transfer systems - Delta‑DOR Raw Data Exchange Format (RDEF) - specifies a standardized file format for exchanging Delta‑DOR (Delta Differential One‑Way Ranging) raw data among space agencies. Originating from the CCSDS Recommended Standard (CCSDS 506.1‑B‑1), ISO 20208:2015 defines the structure and parameter fields required to support inter‑agency correlation and processing of Very Long Baseline Interferometry (VLBI) Delta‑DOR observations used to improve spacecraft angular positioning.

Key topics and technical requirements

Scope and purpose: Standardizes raw Delta‑DOR data format for inter‑agency exchange when correlation involves at least one station outside the responsible agency. Suitable for open‑loop raw data collection as well.
File structure: Defines Observation files and Product files, including header, scan, product, and ending sections. (See clause and figure listings for file layout.)
Parameter fields: Specifies the parameter fields and conventions the format must support; includes conventions for identifiers and file naming.
Automation focus: Designed primarily for computer‑to‑computer automated exchanges and processing workflows.
Data characteristics: Records sampling rate and quantization in the RDEF; no accuracy specification for raw Delta‑DOR data (accuracy assessment of reduced measurements is out of scope).
Transmission out of scope: The standard defines content and format but does not mandate transmission methods - agencies may use CCSDS transfer protocols, SFTP, stream media, or other secure channels.
Normative and informative annexes: Includes annexes covering normative parameter conventions and informative topics such as security, SANA, patent considerations, abbreviations, and examples.

Applications and users

Primary use: Exchange of Delta‑DOR raw data for joint VLBI correlation and spacecraft navigation campaigns to improve angular position (plane‑of‑sky) estimates.
Typical users:
- Space agencies and mission operations centers coordinating multi‑agency tracking
- Ground segment engineers developing data ingest and correlation systems
- Navigation teams integrating Delta‑DOR with Doppler and ranging data
- Software developers implementing automated file‑based ingestion and processing pipelines
Practical value: Enables consistent, interoperable raw data interchange across agencies, reduces integration errors, and supports multi‑station correlation workflows critical to deep‑space navigation.

Related standards

CCSDS family standards on space data systems (CCSDS 506.1‑B‑1 is the originating Recommended Standard adopted as ISO 20208:2015).
Complementary CCSDS file transfer and data‑transfer protocol standards for secure transport (transmission mechanisms are chosen by participating agencies).

Keywords: ISO 20208:2015, Delta‑DOR, RDEF, VLBI, raw data exchange format, spacecraft navigation, inter‑agency data exchange, CCSDS.

Related standards

Other ISO standards

Abstract

Overview

Key topics and technical requirements

Scope and purpose: Standardizes raw Delta‑DOR data format for inter‑agency exchange when correlation involves at least one station outside the responsible agency. Suitable for open‑loop raw data collection as well.
File structure: Defines Observation files and Product files, including header, scan, product, and ending sections. (See clause and figure listings for file layout.)
Parameter fields: Specifies the parameter fields and conventions the format must support; includes conventions for identifiers and file naming.
Automation focus: Designed primarily for computer‑to‑computer automated exchanges and processing workflows.
Data characteristics: Records sampling rate and quantization in the RDEF; no accuracy specification for raw Delta‑DOR data (accuracy assessment of reduced measurements is out of scope).
Transmission out of scope: The standard defines content and format but does not mandate transmission methods - agencies may use CCSDS transfer protocols, SFTP, stream media, or other secure channels.
Normative and informative annexes: Includes annexes covering normative parameter conventions and informative topics such as security, SANA, patent considerations, abbreviations, and examples.

Applications and users

Primary use: Exchange of Delta‑DOR raw data for joint VLBI correlation and spacecraft navigation campaigns to improve angular position (plane‑of‑sky) estimates.
Typical users:
- Space agencies and mission operations centers coordinating multi‑agency tracking
- Ground segment engineers developing data ingest and correlation systems
- Navigation teams integrating Delta‑DOR with Doppler and ranging data
- Software developers implementing automated file‑based ingestion and processing pipelines
Practical value: Enables consistent, interoperable raw data interchange across agencies, reduces integration errors, and supports multi‑station correlation workflows critical to deep‑space navigation.

Related standards

CCSDS family standards on space data systems (CCSDS 506.1‑B‑1 is the originating Recommended Standard adopted as ISO 20208:2015).
Complementary CCSDS file transfer and data‑transfer protocol standards for secure transport (transmission mechanisms are chosen by participating agencies).

Keywords: ISO 20208:2015, Delta‑DOR, RDEF, VLBI, raw data exchange format, spacecraft navigation, inter‑agency data exchange, CCSDS.

ISO 20208:2015 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

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