ISO 24246:2022
(Main)Space systems — Requirements for global navigation satellite system (GNSS) positioning augmentation centers
Space systems — Requirements for global navigation satellite system (GNSS) positioning augmentation centers
This document specifies requirements for GNSS positioning augmentation centres that distribute correction data to provide higher accuracy and integrity information for positioning users in the civil and commercial market. The GNSS positioning augmentation centres cover the following types of positioning: a) real-time sub-meter to decimetre-level positioning; b) real-time centimetre-level positioning; c) post-processed geodetic positioning. This document also specifies roles of the following stakeholders and functions of the software present at GNSS positioning augmentation centres: — role of planner; — role of designer; — role of administrator; — function of software.
Titre manque
General Information
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 24246
First edition
2022-06
Space systems — Requirements for
global navigation satellite system
(GNSS) positioning augmentation
centers
Reference number
© ISO 2022
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ii
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Space-based positioning and navigation . 2
3.2 Positioning quality . 2
3.3 Terrestrial reference system . 4
3.4 Positioning results . 6
3.5 Cyber security . 7
4 Abbreviated terms . 8
5 System overview . 9
6 Universe of discourse .9
6.1 General . 9
6.2 Scope of users . 10
6.3 Service type . 10
6.4 Service area . 10
6.5 Service time . . 10
6.6 Sponsoring organization . 10
7 Requirements for augmentation services .11
7.1 General . 11
7.2 Standard augmentation service . 11
7.3 Precise augmentation service .12
7.4 Geodetic service . 13
7.5 Performance factors . 13
7.5.1 General .13
7.5.2 Communicable correction factors. 13
7.5.3 Receiver-dedicated correction factors . 14
7.5.4 Other correction factors . 14
7.6 Integrity information . 14
8 Requirements for verification .15
8.1 General . 15
8.2 Distinction of accuracy and precision . 15
8.3 Verification . . 16
8.3.1 Principle . 16
8.3.2 Horizontal . 16
8.3.3 Vertical . 16
8.4 Calibration . 16
8.5 Evaluation period . 16
8.6 Convergence time . 17
8.7 Quality control items . 17
9 Requirements for maintenance .17
9.1 General . 17
9.2 Continuous performance monitor . 17
9.3 Cyber security . 17
9.4 User service . 17
Annex A (informative) Cross-border data exchange .18
Annex B (informative) GNSS constellations and systems .19
Annex C (informative) Transmission of augmentation data .20
iii
Annex D (informative) Positional reference for precise navigation .21
Annex E (informative) Meaconing in radionavigaion .24
Annex F (informative) Approaches to evaluate positioning quality .25
Bibliography .26
iv
Foreword
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This document was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles,
Subcommittee SC 14, Space systems and operations.
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v
Introduction
In the initial decades of the 21st century, several countries provide their constellations of global
navigation satellite system (GNSS) such as U.S. GPS, Russian GLONASS, European Galileo, Chinese BDS,
Indian NavIC, Japanese QZSS and SBASs; and they have been utilized as an international public service.
GNSS positioning applications have been expanding in each region across the world.
In order to maximize the capability of these GNSS constellations, the respective regions have deployed
GNSS positioning augmentation centres with continuously operating reference station (CORS) network.
These facilities generate different types of corrections to mitigate atmospheric propagation errors
and satellite errors, as well as providing integrity information. The application of these augmentation
functions helps to achieve higher performance for GNSS positioning.
Along with the development of the GNSS constellations, GNSS reference stations have been established
across populous and economic areas of the world. Industriali
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