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Positioning method and related processing circuit

A technology for processing circuits and positioning methods, which is applied in the field of positioning and navigation, and can solve problems such as navigation misleading, vehicle position error, and accuracy drop

Inactive Publication Date: 2020-10-30
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In vehicle navigation systems that include Global Navigation Satellite System (GNSS) and inertial sensors, when the GNSS signal is poor and unreliable, the vehicle's position may be wrong and / or navigation may be misguided
The quality of the GNSS signal will be affected by the surrounding environment, for example, commercial GNSS chipsets perform well in open sky conditions, but when the vehicle is in an urban canyon or tunnel, the accuracy may be severely degraded

Method used

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  • Positioning method and related processing circuit
  • Positioning method and related processing circuit
  • Positioning method and related processing circuit

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Embodiment Construction

[0012] Certain terms are used throughout the description and claims to refer to particular components. It should be understood by those skilled in the art that manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a basis for distinguishing. The "comprising" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that the first device is coupled to the second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

[0013] The following description is for the purpo...

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Abstract

The invention provides a positioning method and a related processing circuit. The method for performing positioning operations, wherein the method includes the steps of: receiving first positioning information from a first source; receiving second positioning information from a second source; obtaining surrounding environment information of a vehicle from a sensor; and referring to the surroundingenvironment information to determine a positioning strategy to use at least one of the first positioning information and the second positioning information to obtain a location of the vehicle. According to the positioning method and the related processing circuit, the current position and navigation information can be given more accurately.

Description

【Technical field】 [0001] This application is about positioning and navigation, and more specifically about hybrid positioning systems using GNSS and inertial sensors. 【Background technique】 [0002] In vehicle navigation systems that include Global Navigation Satellite System (GNSS) and inertial sensors, when the GNSS signal is poor and unreliable, the vehicle's position may be wrong and / or navigation may be misguided. The quality of the GNSS signal will be affected by the surrounding environment, for example, commercial GNSS chipsets perform well in open sky conditions, but when the vehicle is in an urban canyon or in a tunnel, the accuracy may be severely degraded. In conventional technology, inertial sensors can also be used to estimate the position of the vehicle, however, how to determine the trust level of GNSS and inertial sensors, and how to determine the switching time between GNSS and inertial sensors are important topics. 【Content of invention】 [0003] Accordi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/49G01S19/48G01C21/28
CPCG01S19/49G01S19/48G01C21/28G01C21/32G01C21/165G01S5/01G01S5/011G01C17/28G01C21/14G01C22/00
Inventor 曾廷恩邱聪裕
Owner MEDIATEK INC
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