ISO 18197-2015 PDF

Full title and description

St ISO 18197-2015 — Space systems — Space based services requirements for centimetre class positioning. This International Standard specifies requirements for a wide-area, satellite-broadcast augmentation system intended to provide centimetre-class positioning accuracy in real time for applications such as precision agriculture, mapping and other high-precision positioning uses.

Abstract

ISO 18197:2015 defines system-level requirements for a wide-area centimetre-class positioning augmentation service that broadcasts augmentation data via satellites. The standard covers system configuration, classification of augmentation satellites, positioning augmentation centres, message structure, user support services, requirements for augmentation satellites and control stations, ground reference points, user terminals and verification/evaluation procedures with an emphasis on real-time ambiguity resolution.

General information

• Status: Published (confirmed in ISO review process; published edition remains current as confirmed at review).
• Publication date: May 2015 (Edition 1, 2015-05).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.140 — Space systems and operations.
• Edition / version: 1st edition (2015).
• Number of pages: 31 (as shown on the ISO bibliographic entry for this edition).

Scope

Specifies requirements for a positioning augmentation system that broadcasts augmentation data through satellites to provide centimetre-class positioning over wide areas (on the order of 1 000 km per side or more) without relying on extensive ground networks at the user site. The scope includes system architecture, augmentation satellites and control stations, ground reference points and augmentation centres, user terminal requirements for pre‑processing and output, processing models and constants, and procedures for verification and evaluation. The standard targets real‑time ambiguity resolution and the operational conditions needed to support it.

Key topics and requirements

• System configuration and classification of augmentation satellites (roles and service categories).
• Functions, message structure and operational support provided by positioning augmentation centres.
• Requirements for augmentation satellites and their control stations (broadcast content, availability and signal-in-space considerations).
• Specifications for ground reference points used in augmentation processing (distribution, accuracy and metadata).
• Requirements for user terminals (input parameters, pre-processing, ambiguity resolution in real time, and output).
• Processing requirements: mathematical models, physical constants and formats for augmentation information.
• Verification and evaluation procedures, including evaluation plans, test conditions (period, place, satellites, reference points) and acceptance matters.

Typical use and users

Intended users include GNSS and augmentation system designers and operators, satellite service providers, manufacturers of user terminals (survey/RTK receivers, precision agricultural equipment, mapping systems), system integrators, and regulatory or certification bodies assessing high‑precision space‑based positioning services. Typical applications are precision farming, surveying and mapping, autonomous or assisted navigation systems, and other domains requiring centimetre-level real-time positioning.

Related standards

Standards and specifications commonly associated with GNSS augmentation and high‑accuracy real‑time positioning include RTCM differential/GNSS message families (RTCM SC‑104 / RTCM 10403 series), SBAS (Space-Based Augmentation System) standards and aeronautical SARPs (ICAO Annex 10 / SBAS MOPS), data transport protocols (e.g., NTRIP for streaming RTCM), and observation/navigation file formats (RINEX) used in verification and post‑processing. ISO 18197 was developed under ISO/TC 20 (space systems), which coordinates related space/positioning standards.

Keywords

centimetre-class positioning; space-based augmentation; positioning augmentation centres; augmentation satellites; GNSS augmentation; real-time ambiguity resolution; user terminals; verification and evaluation; SBAS; RTCM.

FAQ

Q: What is this standard?

A: ISO 18197:2015 is an ISO International Standard that specifies requirements for satellite‑broadcast wide‑area augmentation services designed to deliver centimetre‑class positioning accuracy in real time.

Q: What does it cover?

A: It covers system architecture and configuration, augmentation satellites and control stations, ground reference points, positioning augmentation centres and message structures, user terminal requirements (including pre‑processing and output), processing models and physical constants, and procedures for verification and evaluation.

Q: Who typically uses it?

A: GNSS/augmentation system designers and operators, manufacturers of high‑precision receivers and terminals, surveyors and mapping professionals, precision agriculture integrators, autonomous-vehicle integrators, and certification or regulatory bodies.

Q: Is it current or superseded?

A: The 2015 first edition was published in May 2015 and the ISO bibliographic entry indicates the document was reviewed (confirmed) in a subsequent ISO review; users should check the ISO catalogue or their national standards body for any later amendments or supersessions before relying on the standard for compliance.

Q: Is it part of a series?

A: ISO 18197 is a stand‑alone International Standard developed under ISO/TC 20 (Space systems). It sits conceptually alongside other GNSS and augmentation standards (RTCM, SBAS/ICAO MOPS, RINEX, etc.) that together define message formats, service MOPS and data transport for high‑accuracy positioning.

Q: What are the key keywords?

A: Centimetre‑class positioning; augmentation satellites; positioning augmentation centre; SBAS; GNSS augmentation; real‑time ambiguity resolution; RTCM; user terminal requirements.