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GB/T 38630-2020 English PDF

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GB/T 38630-2020: Information technology - Real-time positioning - Multi-source fusion positioning data interface
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Basic data

Standard ID: GB/T 38630-2020 (GB/T38630-2020)
Description (Translated English): Information technology - Real-time positioning - Multi-source fusion positioning data interface
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L78
Classification of International Standard: 35.110
Word Count Estimation: 22,295
Date of Issue: 2020-04-28
Date of Implementation: 2020-11-01
Quoted Standard: GB/T 16831-2013
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies the positioning engine interface and parameter definitions in the multi-source fusion positioning system. This standard applies to the design, development and application of a real-time positioning system that uses multiple sub-location engines to perform multi-source fusion positioning based on fusion strategies.

GB/T 38630-2020: Information technology - Real-time positioning - Multi-source fusion positioning data interface

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Information technology - Real-time positioning - Multi-source fusion positioning data interface ICS 35.110 L78 National Standards of People's Republic of China Information technology real-time positioning Multi-source fusion positioning data interface 2020-04-28 released 2020-11-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Abbreviations 2 5 System Architecture 2 6 Positioning engine interface 3 6.1 Fusion engine positioning interface 3 6.2 Sub-positioning engine positioning interface 4 7 Parameter definition 5 7.1 Definition of sensor parameters 5 7.2 Definition of positioning result parameters 10 Appendix A (informative appendix) Example of integrated positioning strategy 13 Appendix B (informative appendix) Multi-source fusion positioning data interface XML schema example 14 Reference 19

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This standard was proposed and managed by the National Information Technology Standardization Technical Committee (SAC/TC28). Drafting organizations of this standard. China Electronics Standardization Institute, Beijing Tiandiyuan Technology Co., Ltd., Wuhan University, Academy of Military Sciences Institute of Logistic Science and Technology, Institute of Systems Engineering, Shenzhen Saixi Information Technology Co., Ltd., Institute of Computing Technology, Chinese Academy of Sciences, Home information center, 54th Research Institute of China Electronics Technology Group Corporation, Qingdao Anran Internet of Things Technology Co., Ltd., Chinese Academy of Sciences Chemical Research Institute, China Institute of Metrology, Beijing Jinkun Science and Technology Co., Ltd., Beijing Maiding Aite Technology Co., Ltd., Beijing Xihe Branch Technology Co., Ltd., Beijing University of Posts and Telecommunications, Tianfu (Dongguan) Standard Technology Co., Ltd., Xiamen Yicheng Information Technology Co., Ltd., Suzhou Information Technology Co., Ltd. Sub Technology Co., Ltd. The main drafters of this standard. Zhang Zhang, Zhao Fang, Luo Haiyong, Wang Wenfeng, Geng Li, Deng Yuejin, Cheng Wangchi, Wang Jin, Shao Wenhua, Song Jiwei, Cao Guoshun, Wang Sixiang, Yu Hui, Wang Qu, Tian Xiaochun, Ren Yuchen, Gan Xingli, Li Shuang, Li Mingzhang, Gao Wei, He Zhao, Guo Xiaotao, Wu Tong, Xiao Dengkun, Li Sumin, Zheng Siwei, Jiao Jichao, Chen Xiaosong, Wang Cheng, Shi Hongyan, Yu Yanpei, Xie Feipeng. Information technology real-time positioning Multi-source fusion positioning data interface

1 Scope

This standard specifies the positioning engine interface and parameter definitions in the multi-source fusion positioning system. This standard is applicable to the design, development and implementation of real-time positioning systems for multi-source fusion positioning through multiple sub-positioning engines according to fusion strategies. application.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 16831-2013 Coordinate-based standard representation of geographic point location

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Intelligent Terminal With embedded software and hardware systems, terminal products for the personal consumer market. 3.2 Real-time positioning terminal An intelligent terminal that collects and sends position signals on targets attached to assets (articles, human bodies, etc.). Note. The real-time positioning terminal sends information including the unique identification of the asset, and can provide various statuses of the terminal's environment (such as the received Wi-Fi signal) information. 3.3 Positioning engine Software or components that calculate the real-time location of the terminal. 3.4 Fusion positioning engine A module that optimizes the results of multiple sub-positioning engines based on the fusion algorithm to obtain better positioning results. Note. For example, a fusion positioning engine that integrates Wi-Fi sub-positioning engine and PDR sub-positioning engine. 3.5 Sub-positioning engine A positioning engine capable of independently providing positioning results. 3.6 Asynchronous call A method that allows the operation to continue without waiting for the return value of the called function. 3.7 Circular probability error With the true position as the center of the circle, the dispersion radius of the two-site position with a probability of 50% deviation from the center of the circle. 3.8 positioning accuracy The standard deviation between the positioning result and the true position. 3.9 XML markup Identifier of legal content in XML document. [GB/T 30996.1-2014, definition 3.5]

4 Abbreviations

The following abbreviations apply to this document.

5 System architecture

The architecture of the integrated positioning system includes a positioning client and a positioning server. The location server consists of a fusion location engine and multiple sub-location engines composition. The request/response service model is adopted between the positioning client and the integrated positioning engine, and the integrated positioning engine and the sub-positioning engine. Positioning The server can be deployed locally (such as a smart terminal) or a remote network, and the client transmits positioning requests or positioning results through the network interface. many The architecture of the source fusion positioning system is shown in Figure 1. Figure 1 Multi-source fusion positioning system architecture The basic process of fusion positioning is as follows (see Figure 2). a) The positioning client encapsulates the sensor data; b) The positioning client sends a positioning request to the fusion positioning engine through the fusion engine positioning interface; c) After the fusion positioning engine receives the sensor data, it forwards the positioning request to each sub-positioning engine through the sub-positioning engine positioning interface; d) Each sub-positioning engine calculates the positioning result of the sub-positioning engine after receiving the sensor data; e) The sub-positioning engine returns the positioning result of the sub-positioning engine to the fusion positioning engine; f) The fusion positioning engine receives the positioning results of the sub positioning engines and caches them, and merges the sub positioning engines according to the fusion positioning strategy The positioning result obtains the fusion positioning result (see Appendix A for the fusion strategy); g) The fusion positioning engine returns the fusion positioning result to the positioning request (to ensure the real-time performance of the positioning system, the fusion positioning engine can immediately Return the calculated fusion positioning result).

6 Positioning engine interface

6.1 Fusion engine positioning interface The positioning client sends a request to obtain positioning results to the fusion positioning engine, and uses asynchronous calls to receive the fusion positioning engine returned. Align the positioning results. The positioning client encapsulates the real-time sensor data samples collected by the client according to the sensor parameter definition of this standard, and sends it to the fusion The positioning engine sends a fusion positioning request. After receiving the request, the fusion positioning engine checks whether there is a fusion positioning result, and returns immediately if it exists. The positioning result is merged back, otherwise the failed positioning result is returned, as shown in Figure 3. 6.2 Sub-positioning engine positioning interface The fusion positioning engine forwards the positioning request to the sub-positioning engine, and uses asynchronous calls to receive the positioning result response returned by the sub-positioning engine. After the fusion positioning engine receives the positioning request from the positioning client, it encapsulates the sensor data and the latest fusion positioning result as the positioning of the sub-positioning engine. Bit request, sent to all sub-positioning engines. There is no limit to the number of sub-positioning engines, which can be multiple sub-positioning engines or only one. If the positioning of the sub-positioning engine is successful, the positioning result of the sub-positioning engine is merged with the positioning results of other existing sub-positioning engines, and the fusion is updated Positioning results. The interaction sequence of the fusion positioning engine and the single sub-positioning engine is shown in Figure 4. Figure 4 Interaction sequence diagram of the fusion positioning engine and a single sub-positioning engine The Java description of the sub-positioning engine positioning request interface definition is as follows.

7 parameter definition

7.1 Definition of sensor parameters The definition of sensor parameters is shown in Table 1.Each seed positioning engine analyzes one or more sensor data items to determine according to its own needs Bit. For example, the magnetic positioning engine can analyze magnetic force and acceleration sensor data, and inertial navigation only needs to analyze the acceleration sensor data.

Appendix A

(Informative appendix) Examples of integrated positioning strategies A.1 Weighted fusion strategy Each positioning engine is given a specific weight for the positioning result, and the weighted sum of multiple results is used as the result of the fusion positioning engine. Common weight calculation Methods include the reciprocal of the circular probability error of the positioning result, manual assignment and deep learning methods. A.2 Voting integration strategy It is suitable for the fusion of enumerated type positioning information such as building identification and floor judgment. Each positioning engine output result counts one vote, with the highest number of votes As a result of fusion. If multiple fusion results have the same number of votes, one is randomly selected as the fusion result. A.3 Separate isolation strategy Fusion of positioning results suitable for system debugging purposes. That is, only select one positioning engine result output, and exclude other engine results interference, Observe the role of specific engines. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 38630-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 38630-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 38630-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 38630-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.