GB/T 37019.2-2018Specification for national BeiDou augmentation system dissemination interface—Part 2: China Mobile Multi-media Broadcasting (English PDF)

Foreword

GB/T 37019 "Satellite Navigation Ground Augmentation System Broadcast Interface Specification" consists of three parts.

--- Part 1. Mobile communication network;

--- Part 2. China Mobile Multimedia Broadcasting;

--- Part 3. FM audio band digital audio broadcasting.

This part is the second part of GB/T 37019.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

Introduction

The Satellite Navigation Ground Reinforcement System (NBAS) is a nationally important information infrastructure for high precision positioning and integrity service.

The satellite navigation ground-based augmentation system receives navigation signals transmitted by navigation satellites through a number of reference stations established at a certain distance on the ground.

Transmission to the data processing center via the communication network, processing to generate precise orbits and clock differences of the navigation satellite, ionospheric correction, post-processing data Products and other information are broadcasted through satellite, mobile communication networks, digital broadcasting, etc., and a series of standards are formed accordingly. The first part is the mobile communication network.

The second part is China Mobile Multimedia Broadcasting, and the third part is FM frequency band digital audio broadcasting. Follow-up will be based on the new broadcast method Use, increase the corresponding standard.

BDS's data products are products that should be broadcasted by satellite navigation ground-based augmentation systems, data products from GLONASS, GPS, and Galileo. For the purpose of selecting the broadcast content.

1 Scope

This part of GB/T 37019 specifies that satellite navigation ground enhancement systems use China Mobile Multimedia Broadcasting (CMMB) broadcasts.

BDS/GLONASS/GPS wide-area differential and BDS/GLONASS/GPS/Galileo ephemeris assisted positioning data products Process, interface protocol, interface requirements, classification and encapsulation of data products.

This part is applicable to the data product broadcast and user terminal development of satellite navigation ground enhancement system.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 19391 Global Positioning System (GPS) terms and definitions

GB/T 37018 Satellite navigation ground-based augmentation system data processing center data interface specification

GY/T 220.1 Mobile multimedia broadcasting - Part 1: Broadcast channel frame structure, channel coding and modulation

GY/T 220.2 Mobile Multimedia Broadcasting Part 2: Multiplexing

GY/T 220.7 Mobile multimedia broadcasting - Part 7: Technical requirements for receiving and decoding terminals

3 Terms and definitions

The following terms and definitions as defined in GB/T 19391 apply to this document.