Overview
ISO 19116:2025 - Geographic information - Positioning services specifies a standardized interface, including data structure and content, that enables communication between position-providing device(s) and position-using device(s). The standard ensures that position-using systems can obtain, unambiguously interpret and evaluate position information - including a measure of reliability - to determine whether the result meets requirements for the intended use. ISO 19116 supports integration of reliable position information from diverse, non‑specific positioning technologies (e.g., GNSS, local positioning systems) for location-focused applications.
Key topics and technical requirements
ISO 19116:2025 defines a comprehensive model and requirements for positioning services. Major technical topics include:
- Positioning services model: static and dynamic data structures describing services, operations and conformance rules.
- Basic information elements: system information, session metadata, observation records, coordinate transfer (offset) values and identification of instruments.
- Quality and reliability: mechanisms and a reliability model to report accuracy, quality modes and to support decisions based on the degree of reliability.
- Positioning operations: definitions and requirements for service operations and how to apply them.
- Technology‑specific information: operating and computational conditions, measurement conditions, raw measurement data and performance indicators.
- Conformance and implementation guidance: normative conformance clauses and informative annexes (accuracy reports, GNSS operating conditions, reliability evaluation methods, examples and use cases).
The standard is harmonized with related ISO standards for coordinate metadata and quality (for example, ISO 19111 and ISO 19157‑1), and provides UML models and package definitions to support consistent implementations.
Applications and practical value
ISO 19116:2025 is designed to improve interoperability, traceability and reliability of positioning data across many domains:
- Surveying and geodetic networks - consistent reporting of positions, offsets and instrument metadata.
- Navigation and marine/aeronautical positioning - standardized observation and quality reporting.
- Intelligent Transportation Systems (ITS) - trusted vehicle location and decision-making based on reliability metrics.
- Location‑Based Services (LBS) and GIS - unified interface for integrating heterogeneous positioning sources.
- Application developers and system integrators - clearer integration of raw measurements and processed positions into spatial workflows.
Practical benefits include simplified system integration, clearer accuracy and reliability assessment, and reduced ambiguity when combining multiple positioning technologies.
Related standards
Keywords: ISO 19116, positioning services, geographic information, GNSS, positioning accuracy, reliability model, location-based services, intelligent transportation systems, surveying, positioning interface.