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A road slope enhanced digital map making method based on Kalman filter

A Kalman filter and road slope technology, applied in the field of geographic information systems, can solve problems such as insufficient precision, complicated process, and lack of road slope information, and achieve good real-time performance, wide application range, and high precision

Active Publication Date: 2018-06-19
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a road gradient-enhanced digital map production method based on Kalman filter, which solves the problem of large workload, complex process, insufficient precision and lack of road gradient information (road gradient specifically refers to the longitudinal direction of the road). slope, which has a wide range of applications in the field of vehicle active safety)

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  • A road slope enhanced digital map making method based on Kalman filter
  • A road slope enhanced digital map making method based on Kalman filter
  • A road slope enhanced digital map making method based on Kalman filter

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Embodiment Construction

[0049] Digital map is to store urban geographic information in a certain format through digitization and present it in the form of a continuous map. It is essentially an urban geographic database. Digital maps can provide a wealth of location-based services, bringing great convenience to people's lives. However, the current digital map has the following problems: the accuracy of the digital map is low, and it is impossible to obtain information such as the longitudinal slope of the road with high accuracy through the known information; Important information, such as road heading, curvature, slope, height of nearby floors, etc. are not included; digital maps are currently complicated to make and require high professionalism, requiring mastery of spatial transformation and geometric transformation algorithms, vector and raster data models, etc. ; In addition to the high requirements for professionalism, many surveying and mapping tasks in the production process of traditional di...

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Abstract

The invention discloses a Kalman filter based road slope enhanced digital map making method. The method comprises the steps of acquiring position information and vehicle information of a selected road through a multi-sensor information acquisition automobile; performing preliminary processing on the acquired road position information, transforming longitude and latitude coordinates into plane coordinates, and using positions represented by the converted plane coordinates as road nodes; estimating the longitudinal slope of the road of each node position through a Kalman filter based road longitudinal slope estimation algorithm; making the node position information and the longitudinal slope information of the road into an enhanced digital map through digital map making software.

Description

technical field [0001] The invention belongs to the field of geographic information systems, and relates to a method for making a road slope enhanced digital map based on Kalman filtering. Background technique [0002] Digital map is to store urban geographic information in a certain format through digitization and present it in the form of a continuous map. It is essentially an urban geographic database. Digital maps can provide a wealth of location-based services, bringing great convenience to people's lives. However, the current digital map has the following problems: the accuracy of the digital map is low, and it is impossible to obtain information such as the longitudinal slope of the road with high accuracy through the known information; Important information, such as road heading, curvature, slope, height of nearby floors, etc. are not included; digital maps are currently complicated to make and require high professionalism, requiring mastery of spatial transformatio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B29/00
CPCG09B29/004
Inventor 李旭王宇蒋荣
Owner SOUTHEAST UNIV