GB/T 45086.1-2024 Technical requirements and test methods for on-board positioning system - Part 1: Satellite positioning
1 Scope
This document specifies the technical requirements of on-board satellite positioning system, and describes the corresponding test methods.
This document is applicable to on-board satellite positioning system.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 16422.2-2022 Plastics - Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps
GB/T 18655-2018 Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of on-board receivers
GB/T 19951-2019 Road vehicles - Disturbances test methods for electrical/electronic component from electrostatic discharge
GB/T 21437.2-2021 Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 2: Electrical transient conduction along supply lines only
GB/T 21437.3-2021 Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
GB/T 28046.1-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 1: General
GB/T 28046.2-2019 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 2: Electrical loads
GB/T 28046.3-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 3: Mechanical loads
GB/T 28046.4-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 4: Climatic loads
GB/T 28046.5-2013 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 5: Chemical loads
GB 34660-2017 Road vehicles - Requirements and test methods of electromagnetic compatibility
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
on-board satellite positioning system
system on board that uses radio signal transmitted by man-made earth satellite for positioning, velocity measurement and timing
3.2
positioning accuracy
statistical value of the difference between the position output by the on-board satellite positioning system and the real position
3.3
velocity accuracy
statistical value of the difference between the velocity output by the on-board satellite positioning system and the real velocity
3.4
timing accuracy
statistical value of the difference between the time output by the on-board satellite positioning system and the UTC
3.5
cold start time to first fix
time required for the on-board satellite positioning system from receiving satellite signal to the first normal positioning when the ephemeris, almanac, approximate time, and approximate position are unknown
3.6
hot start time to first fix
time required for the on-board satellite positioning system from wake-up to the first normal positioning when the ephemeris, almanac, approximate time, and approximate position are known
3.7
reacquisition time
time required for the on-board satellite positioning system from signal recovery to satellite signal recapture after the received satellite signal loses lock for a short time
3.8
acquisition sensitivity
minimum signal power level required for the on-board satellite positioning system to capture satellite signal and achieve normal positioning under cold start conditions
3.9
reacquisition sensitivity
minimum signal power level required for the on-board satellite positioning system to recapture the satellite signal and achieve normal positioning after the received satellite signal loses lock for a short time
3.10
tracking sensitivity
minimum signal power level required for keeping the tracking and positioning of satellite signal after the on-board satellite positioning system achieves normal positioning
3.11
BeiDou multi-mode
mode of on-board satellite positioning system not only supporting the BeiDou Navigation Satellite System, but also supporting one or more of the Global Positioning System, Galileo Navigation Satellite System and Global Navigation Satellite System to achieve positioning, velocity measurement and timing
3.12
BeiDou independence mode
mode of on-board satellite positioning system using only the BeiDou Navigation Satellite System to achieve positioning, velocity measurement and timing when the on-board satellite positioning system works in BeiDou multi-mode and other satellite navigation systems are not available
3.13
BeiDou priority mode
mode of on-board satellite positioning system giving priority to using the BeiDou Navigation Satellite System for positioning, velocity measurement and timing when the on-board satellite positioning system works in BeiDou multi-mode and the relevant information of multiple satellite navigation systems is different and the effectiveness cannot be judged
3.14
BeiDou single-mode
mode of on-board satellite positioning system using only BeiDou Navigation Satellite System for positioning, speed measurement and timing
4 Abbreviations
For the purposes of this document, the following abbreviations apply.
AWGN: Add White Gaussian Noise
BDS: BeiDou Navigation Satellite System
CEP: Circular Error Probable
Galileo: Galileo Navigation Satellite System
GLONASS: Global Navigation Satellite System
GNSS: Global Navigation Satellite System
GPS: Global Positioning System
HDOP: Horizontal Dilution of Precision
ID: Identity
PDOP: Positional Dilution of Precision
Contents Foreword Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Abbreviations 5 Technical requirements 6 Test methods 7 Inspection rules Annex A (Informative) General statement provisions Annex B (Normative) RF signal harmonization parameter specifications Annex C (Normative) Method for setting cold start status of on-board satellite positioning system Annex D (Normative) Test scenario of on-board satellite positioning system Annex E (Normative) Data processing method of positioning accuracy Annex F (Normative) Data processing method of velocity accuracy Annex G (Normative) Data processing method of timing accuracy Annex H (Informative) Road test of on-board satellite poisoning system Annex I (Informative) Simulation test for darkroom of on-board satellite poisoning system Annex J (Informative) Calculation model of durability test
