GB/T 42575-2023 (English Version)

Standard No.: GB/T 42575-2023
Language: Chinese, Available in English version
Release Date: 2023
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 42575-2023

Scope: Scope This document specifies the composition, functions, performance requirements and test methods of the Beidou dual-model OEM board (hereinafter referred to as the dual-model OEM board). This document is applicable to the design, production, procurement and testing of dual-model OEM boards with both Beidou positioning, navigation, timing and short message communication capabilities. OEM boards with only Beidou positioning, navigation, timing or short message communication capabilities are used for reference.

Introduction

1. Background and Overview of the Standard

This standard was proposed by the Equipment Development Department of the Central Military Commission and is under the jurisdiction of the National Beidou Satellite Navigation Standardization Technical Committee (SAC/TC544). It is applicable to the design, production, procurement and testing of dual-model OEM boards with both Beidou positioning, navigation and timing and short message communication capabilities. The standard drafting units include the 54th Institute of China Electronics Technology Group Corporation, etc.

2. Comparison of standard frameworks

Dimensions	Performance indicators	Test methods
Capture sensitivity	≤-168dBW	Signal simulator step test
Tracking sensitivity	≤-175dBW	Continuous tracking test under dynamic conditions
Positioning accuracy	Horizontal direction: 9m; Elevation direction: 10m	Statistics of comparison between benchmark points and actual positions

3. Analysis of technical requirements

Dual-model OEM board consists of RF unit, baseband signal processing unit, data processing unit, etc., and must meet the following requirements:

Support multiple signal reception such as B1I, B3I, B1C, B2a
With short message communication function (regional/global)
Dynamic performance: maximum speed ≥515m/s, acceleration ≥40m/s²

4. Test conditions and equipment

The test must be carried out under standard atmospheric conditions:

Temperature range: 15°C~35°C
Humidity range: 25%~75%

The main test equipment includes:

Standard time source
Oscilloscope (bandwidth ≥ 500MHz)
Spectrum analyzer (frequency measurement range ≥ 3GHz)

5. Implementation suggestions

Hardware design:It is recommended to use MCX/SMA interface and ensure that the antenna impedance is 50Ω.

Software configuration:Follow the product specifications and set the appropriate signal level and working mode.

Test environment:It is recommended to perform performance testing in a microwave darkroom or simulator to ensure that electromagnetic interference does not affect the results.

GB/T 42575-2023 history

2023 GB/T 42575-2023 Performance requirements and test methods for BDS dual model OEM board