Method for accurately positioning traveling vehicle in intelligent traffic system

A vehicle and satellite positioning technology, which is applied in the field of precise positioning of driving vehicles for intelligent transportation, and can solve problems such as failure to meet safe driving performance requirements

Inactive Publication Date: 2016-08-03
付寅飞
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  • Abstract
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AI Technical Summary

Problems solved by technology

The advanced intelligent transportation system has higher and higher requirements in safety assisted driving such as vehicle anti-collision reminder, lane change hazard reminder, vehicle distance hazard reminder and automatic driving assisted navigation, and these applications require stable and real-time access to at least Positioning services with sub-meter-level or higher precision, so the SPP satellite positioning platform currently used by vehicles cannot meet the performance requirements for safe driving

Method used

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  • Method for accurately positioning traveling vehicle in intelligent traffic system
  • Method for accurately positioning traveling vehicle in intelligent traffic system
  • Method for accurately positioning traveling vehicle in intelligent traffic system

Examples

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Embodiment Construction

[0022] figure 1 In the system deployment diagram of this example, the base station 1-1 may be a traditional base station of the 3G / 4G wireless communication system, or a specific base station specially designed for this system. The base stations 1-1 are fixed and set up along the side of the road. The distance between the base stations 1-1 can range from a few hundred meters to several kilometers. In order to ensure the positioning accuracy, it generally does not exceed 10 kilometers. The base station 1-1 receives GNSS satellite signals, and is responsible for broadcasting differential data such as pseudorange differential corrections, pseudorange and carrier phase observations, etc. The mobile terminal 1-2 is installed on the vehicle, and the mobile terminal 1-2 receives the GNSS satellite signal and the differential data broadcast by the base station 1-1 at the same time, and then calculates the current accurate position, speed and time information of the mobile vehicle in r...

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Abstract

The invention relates to an accurate positioning method based on the fusion of the satellite differential positioning technology and the wireless broadband data communication technology, and aims to provide the high-accuracy positioning information for a vehicle that is travelling at a high speed. According to the invention, the pseudo-range differential positioning technology, the RTK differential positioning technology and a broadband data communication system are integrated and then a positioning system based on the satellite differential positioning technology and the wireless broadband data communication network is provided. As a result, the real-time and stable information from the sub-meter level to the centimeter level, including the accurate position, the speed and the time information, is provided for the vehicle travelling at the high speed. Therefore, the vehicle can be positioned and tracked on the lane level. According to the technical scheme of the invention, the system comprises a base station part and a movable terminal part. The base station part is arranged on a base station around a road, and is composed of a GNSS reference station receiving system and a wireless broadband communication module. The mobile terminal part is installed on the vehicle and is composed of a GNSS mobile station receiving system and a wireless broadband communication module.

Description

technical field [0001] The invention relates to a satellite differential positioning method which integrates pseudo-range differential, RTK differential technology and wireless broadband data communication, and aims to provide high-precision positioning information for vehicles running at high speed. It is suitable for the real-time output of precise position, speed and time information of moving vehicles in intelligent transportation. Background technique [0002] The intelligent transportation system applies advanced electronic information technology to transportation to realize efficient and value-added services, many of which are based on vehicle location information, so the positioning system is a basic platform in the intelligent transportation system. Intelligent transportation systems can use satellite positioning and navigation systems to provide location services for ground vehicles through space-based satellites. At present, the GNSS (satellite positioning and na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/48
CPCG01S19/48
Inventor 黄润芳
Owner 付寅飞
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