GB/T 37019.1-2018 in English
VALIDSpecification for national BeiDou augmentation system dissemination interface—Part 1:Mobile communication network
- Issued on:2018-12-28
- Implemented on:2019-07-01
- File Format:PDF
- Delivery:Via email within 5 business days
$369.00
| Standard No: | GB/T 37019.1-2018 |
| Document status: | VALID |
| Title in English: | Specification for national BeiDou augmentation system dissemination interface—Part 1:Mobile communication network |
| Title in Chinese: | 卫星导航地基增强系统播发接口规范 第1部分：移动通信网 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2018-12-28 |
| Implemented on: | 2019-07-01 |
| ICS Classification: | 47.020.70-Navigation and control equipment |
| Chinese Classification: | U65-Navigation equipment |
| Professional Classification: | GB-National Standard |
| Related Keywords: | mobile communication network
mobile communication network introduction standard framework national beidou augmentation system dissemination ground-based augmentation system communication technology |
| Related Topics: | satellite navigation
enhanced system GB/T 37019.1 GB/T 37019.1-2018 foundation |
《GB/T 37019.1-2018卫星导航地基增强系统播发接口规范 第1部分：移动通信网》由TC544（全国北斗卫星导航标准化技术委员会）归口，主管部门为中央军委装备发展部。
Introduction
Standard Framework and Technology Evolution
As the first part of the BeiDou Ground-Based Augmentation System (NBAS) series of specifications, this standard focuses on the interface requirements for broadcasting differential data through the mobile communication network. With the evolution of 2G/3G/4G communication technology, the standard has designed an adaptive broadcast mechanism compatible with different standards, and the typical broadcast delay needs to be ≤1 second.
Core Interface Protocol Analysis
| Service Type | Authentication Process | Key Fields | Bandwidth Requirements |
|---|---|---|---|
| Wide Area Differential | Registration→Authentication→Service Application | User ID+Authorization Code+Service Options | 25-41 kbit/s |
| Regional Differential | Additional Location Information Required | GPGGA Protocol Location Data | 6-15 kbit/s |
| Ephemeris Assistance | Single Broadcast of Complete Ephemeris | Approximate location + satellite system selection | On-demand allocation |
Data product technical specifications
Typical application scenario comparison
Surveying and mapping service: Using BDS regional differential message group (1351-1354), dual-frequency carrier phase terminal is required, positioning accuracy reaches centimeter level, bandwidth ≥15kbit/s.
In-vehicle navigation service: Using wide-area differential combined orbit clock correction message (1303/1066), single-frequency terminal can achieve meter-level positioning, and the typical broadcast cycle is 30 seconds.
Implementation Suggestions
- Terminal Development: Need to be compatible with communication standards such as YD/T 2575 (LTE) and YD/T 1367 (TD-SCDMA)
- Data Optimization: 2G networks give priority to combined orbit clock error messages (compress bandwidth by 40%)
- Security Mechanism: The authorization code adopts a variable length design (≥20 bytes) with Hash hash processing
Technology Evolution Direction
The standard reserves new message interfaces such as Galileo MSM7, and will support low-latency broadcasting (<100ms) and multi-frequency point fusion positioning of 5G networks in the future.
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