GB/T 44175.1-2024 全球连续监测评估系统(iGMAS)实时服务 第1部分：数据流格式

ICS

49.020

CCS

V04

中华人民共和国国家标准

GB/T44175.1—2024

全球连续监测评估系统（iGMAS）

实时服务第1部分:数据流格式

Real-timeserviceofinternationalGNSSmonitoringandassessmentsystem

(iGMAS)—Part1:Datastreamformat

2024-07-24发布2024-07-24实施

国家市场监督管理总局

发布

国家标准化管理委员会

GB/T44175.1—2024

目次

前言

Ⅲ

·····································································································

引言

Ⅳ

·····································································································

1

范围

1

··································································································

2

规范性引用文件

1

······················································································

3

术语、定义和缩略语

1

·················································································

3.1

术语和定义

1

······················································································

3.2

缩略语

1

···························································································

4

总则

2

··································································································

4.1

信息类型

2

·························································································

4.2

信息结构

3

·························································································

4.3

数据字段

4

·························································································

5

系统参数信息格式

9

····················································································

6

天线参考点信息格式

9

·················································································

7

接收机和天线信息格式

9

···············································································

8

GNSS观测数据信息格式

9

·············································································

9

GNSS导航数据信息格式

9

·············································································

9.1

BDS导航数据信息

9

···············································································

9.2

GPS导航数据信息

13

··············································································

9.3

GLONASS导航数据信息

14

·······································································

9.4

Galileo导航数据信息

14

···········································································

10

GNSS电离层参数信息格式

14

········································································

10.1

BDS电离层参数信息

14

··········································································

10.2

GPS电离层参数信息

15

··········································································

10.3

Galileo电离层参数信息

15

········································································

11

BDS﹘2完好性及差分信息格式

16

·····································································

12

气象数据信息格式

17

·················································································

13

时差测量数据信息格式

17

·············································································

14

GNSS健康状态信息格式

17

··········································································

14.1

通用格式

18

······················································································

14.2

BDS健康状态信息

18

············································································

14.3

GPS健康状态信息

18

············································································

14.4

GLONASS健康状态信息

18

······································································

14.5

Galileo健康状态信息

18

··········································································

附录A（规范性）

RTCMSTANDARD10403.3﹘2022规定的格式

19

································

Ⅰ

GB/T44175.1—2024

A.1

数据流数据字段

19

················································································

A.2

数据类型

30

·······················································································

A.3

系统参数信息格式

32

·············································································

A.4

天线参考点信息格式

32

···········································································

A.5

接收机和天线信息格式

33

········································································

A.6

GNSS观测数据信息格式

33

······································································

A.7

GNSS导航数据信息格式

40

······································································

附录B（规范性）

CRC﹘24Q校验算法

47

······························································

参考文献

48

·······························································································

Ⅱ

GB/T44175.1—2024

前言

本文件按照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规

定起草。

本文件是GB/T44175《全球连续监测评估系统（iGMAS）实时服务》的第1部分。GB/T44175已经发

布了以下部分：

—第1部分：数据流格式；

—第2部分：产品格式。

请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。

本文件由中央军委装备发展部提出。

本文件由全国北斗卫星导航标准化技术委员会（SAC/TC544）归口。

本文件起草单位：中国航天时代电子有限公司、中国卫星导航工程中心、中国地震局地震预测研究

所、武汉大学、中国科学院国家授时中心、中国人民解放军国防科技大学、中国电科网络通信研究院。

本文件主要起草人：陈海龙、李冬、焦文海、刘莹、王凯、孙汉荣、苏牡丹、蔡洪亮、刘晖、

周巍、胡志刚、张喆、余意、秦明峰、张建伟。

Ⅲ

GB/T44175.1—2024

引言

全球连续监测评估系统（iGMAS）实时服务是全球连续监测评估系统的特色服务之一。其主要应用

价值在于GNSS用户能够通过实时服务开展高精度实时定位应用。为了满足全球连续监测评估系统实时

数据和精密定位服务改正数的交换和处理需求，制定GB/T44175《全球连续监测评估系统

（iGMAS）实时服务》，拟由两个部分构成。

—第1部分：数据流格式。目的在于规定全球连续监测评估系统向GNSS用户提供实时数据流的

格式。

—第2部分：产品格式。目的在于规定全球连续监测评估系统向GNSS用户提供实时产品的格式。

Ⅳ

GB/T44175.1—2024

全球连续监测评估系统（iGMAS）

实时服务第1部分:数据流格式

1范围

本文件规定了全球连续监测评估系统实时服务数据流的信息类型、信息结构、数据字段和信息

格式。

本文件适用于全球连续监测评估系统跟踪站观测数据数据流的采集、存储、处理和交换等工作，也

适用于GNSS测量接收机的研制、生产、测试及GNSS观测实时数据流的使用。

2规范性引用文件

下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文

件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包含所有的修改单）适用

于本文件。

GB/T27606—2020GNSS接收机数据自主交换格式

GB/T39267北斗卫星导航术语

GB/T39414.1—2020北斗卫星导航系统空间信号接口规范第1部分：公开服务信号B1C

GB/T39414.2—2020北斗卫星导航系统空间信号接口规范第2部分：公开服务信号B2a

GB/T39414.3—2020北斗卫星导航系统空间信号接口规范第3部分：公开服务信号B1I

GB/T39414.4—2020北斗卫星导航系统空间信号接口规范第4部分：公开服务信号B3I

RTCMSTANDARD10403.3:2022差分全球卫星导航系统服务[DifferentialGNSS（GlobalNav﹘

igationSatelliteSystems）services]

3术语、定义和缩略语

3.1术语和定义

GB/T39267界定的以及下列术语和定义适用于本文件。

3.1.1

实时服务real-timeservice

全球连续监测评估系统在收到观测数据或完成处理后以信息流的形式向GNSS用户提供数据流和产

品的过程。

3.1.2

数据流datastream

一组有序、有起点同步字节和终点校验字节的观测数据序列。

3.2缩略语

下列缩略语适用于本文件。

AIF：系统告警标识（AccuracyIntegrityFlag）

AODC：时钟数据龄期（AgeOfData,Clock）

AODE：星历数据龄期（AgeOfData,Ephemeris）

1