Geomagnetic map and construction method and device thereof

A map construction and geomagnetic technology, applied in the direction of surveying devices, ground navigation, satellite radio beacon positioning systems, etc., can solve the problems of applicable scenarios, hardware and software requirements, etc., to reduce the workload of data collection, low cost, fast effect

Pending Publication Date: 2021-03-05
BEIJING HORIZON ROBOTICS TECH RES & DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this technology needs to collect and process massive amounts of data, has very high requirements on hardwa

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  • Geomagnetic map and construction method and device thereof
  • Geomagnetic map and construction method and device thereof
  • Geomagnetic map and construction method and device thereof

Examples

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Example Embodiment

[0022] Next, an exemplary embodiment according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of the present application, rather than all embodiments of the present application, to be understood, the present application is not limited by the example embodiments described herein.

[0023] figure 1 Schematic diagram of the Earth's magnetic field is shown. Such as figure 1 As shown in (a), the geographic Arctic is generally corresponding to the ground magnetic south pole, and the geographical South Pole is substantially corresponding to the geomagnetic allways, the geomagnetic field is similar to the magnetic field distribution of strip magnets. Although studies have shown that the magnetic Northern Pole will move, this movement is very slow, and it is also very small relative to the scale of the entire earth, so that the ground magnetic field can be regar...

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Abstract

The invention discloses a geomagnetic map and a construction method and device thereof. According to one embodiment, the geomagnetic map construction method may include the steps of receiving positiondata and geomagnetic data acquired by at least one vehicle, wherein the sampling frequency of the position data is lower than the sampling frequency of the geomagnetic data, the position data including first position data and second position data, and the geomagnetic data comprises first geomagnetic data corresponding to the first position data, second geomagnetic data corresponding to the secondposition data, and one or more pieces of intermediate geomagnetic data between the first geomagnetic data and the second geomagnetic data; determining intermediate position data corresponding to theintermediate geomagnetic data according to the first position data and the second position data; and constructing a geomagnetic map based on each pieces of geomagnetic data and the position data corresponding to each pieces of geomagnetic data.

Description

technical field [0001] The present application generally relates to the field of automatic driving, and more particularly relates to a geomagnetic map and its construction method and device. Background technique [0002] Real-time precise positioning and navigation of autonomous vehicles is a prerequisite for safe driving. With precise geographic location, combined with maps, self-driving vehicles can solve problems such as "where to go", "where" and "how to go", while also ensuring that the vehicle is always in the correct lane during driving. [0003] At present, the most widely used is GPS navigation technology, which determines the distance between the vehicle and the satellite by receiving broadcasts from GPS satellites, and then calculates the precise position of the vehicle through triangulation. However, this technique still has many drawbacks. First, the vehicle's GPS receiver needs to establish a connection with the required number of satellites. This is generall...

Claims

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Application Information

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IPC IPC(8): G01C21/32G01C21/08G01C21/00G01S19/14G01S19/45
CPCG01C21/32G01C21/08G01C21/005G01S19/14G01S19/45
Inventor 陈宏
Owner BEIJING HORIZON ROBOTICS TECH RES & DEV CO LTD
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