ISO 17809-2014 PDF

Full title and description

ISO 17809:2014 — Space data and information transfer systems — Delta-differential one-way ranging (Delta‑DOR) operations. This International Standard defines the rationale, operational requirements and criteria for planning, conducting and processing Delta‑DOR measurements used to determine precise spacecraft position in the plane of the sky for deep‑space missions.

Abstract

Delta‑Differential One‑Way Ranging (Delta‑DOR) operations are a radiometric/very‑long‑baseline interferometry (VLBI) based technique used by space agencies to obtain high‑precision angular position (plane‑of‑sky) measurements of deep‑space spacecraft. ISO 17809:2014 describes the purpose, required capabilities, operational constraints, quality criteria and processing considerations that Delta‑DOR operations and supporting facilities should meet to produce reliable position measurements for mission navigation and orbit determination.

General information

• Status: Published.
• Publication date: 2014 (published June/July 2014).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.140 (Space systems and operations).
• Edition / version: Edition 1 — 2014.
• Number of pages: Approximately 45 pages (ISO edition), with some national/adopted versions showing extended front/back matter in their publications.

Scope

ISO 17809:2014 applies to agencies and organizations operating deep‑space missions that require accurate determination of spacecraft angular position (plane of the sky). It sets out the rationale, minimum operational requirements, performance criteria and process descriptions for Delta‑DOR operations so that participating stations and processing centres can produce consistent, traceable measurements suitable for mission navigation. The standard is not intended for operations where Delta‑DOR accuracy and operational constraints are not appropriate for the mission needs.

Key topics and requirements

• Principles of Delta‑DOR measurement (differential one‑way ranging combined with interferometric correlation against celestial reference sources).
• Operational requirements for participating ground stations (timing, frequency stability, dual‑station coordination and scheduling).
• Data acquisition and correlation procedures, including calibrations and template/reference source handling.
• Accuracy, uncertainty budgeting and error sources (ionosphere/troposphere effects, station position and clock errors, source structure).
• Time and frequency synchronization requirements for one‑way measurements and post‑processing.
• Data formats, exchange and archiving considerations (including references to Delta‑DOR raw data exchange and related data messages).
• Quality control, result reporting and requirements for use in orbit determination and mission operations.

Typical use and users

Primary users are national and international space agencies, mission navigation teams, deep‑space network operators, tracking station operators, VLBI correlation centres and contractors that provide spacecraft tracking and orbit determination services. Typical uses include precision orbit determination for planetary and deep‑space missions, contingency navigation, and inter‑agency cooperative tracking campaigns where high angular accuracy is required.

Related standards

ISO 17809 is part of the ISO family of space data and information transfer systems standards. Related standards and documents include ISO 20208 (Delta‑DOR raw data exchange formats and related data handling), other ISO space data message standards and relevant CCSDS (Consultative Committee for Space Data Systems) or national deep‑space tracking documents that describe complementary data formats, orbit/attitude messages and operational procedures.

Keywords

Delta‑DOR; Delta Differential One‑Way Ranging; deep‑space navigation; VLBI; spacecraft tracking; space data and information transfer systems; ISO 17809; ground stations; timing and synchronization; orbit determination.

FAQ

Q: What is this standard?

A: ISO 17809:2014 is an International Standard that specifies rationale, requirements and criteria for Delta‑Differential One‑Way Ranging (Delta‑DOR) operations used to obtain precise spacecraft angular positions for deep‑space missions.

Q: What does it cover?

A: It covers operational principles, ground‑station and timing requirements, data acquisition and correlation practices, calibration and uncertainty considerations, result reporting and criteria for using Delta‑DOR measurements in navigation and orbit determination.

Q: Who typically uses it?

A: Space agencies, deep‑space network operators, mission navigation teams, VLBI correlation centres and contractors providing tracking/orbit determination services.

Q: Is it current or superseded?

A: The standard was published in 2014 (edition 1). ISO standards are subject to periodic review; users should consult the ISO catalogue or their national standards body for the current review status, amendments or any later revisions before assuming full currency for operational use.

Q: Is it part of a series?

A: Yes—ISO 17809 belongs to the ISO space data and information transfer systems family and has related normative documents (for example, standards addressing raw data exchange formats and other space message types) and cross‑references to CCSDS guidance used in deep‑space tracking and data exchange.

Q: What are the key keywords?

A: Delta‑DOR, VLBI, deep‑space navigation, ground station coordination, timing and synchronization, spacecraft angular position, ISO 17809.