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Navigation and positioning method based on assistant positioning

An auxiliary positioning and navigation positioning technology, which is applied in navigation, surveying and navigation, satellite radio beacon positioning system, etc., can solve the problems that satellite navigation signals cannot be accurately positioned, the accuracy of calculation results cannot be guaranteed, and the cost of inertial navigation equipment increases. Achieve the effects of reducing the number and density of layout, saving resources, and reducing the amount of calculation

Active Publication Date: 2018-05-25
MICROVAST POWER SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in reality, in the integration process, the error existing in the inertial navigation equipment itself will gradually increase with the accumulation of time, and finally the accuracy of the calculation result cannot be guaranteed
In order to meet the high-precision positioning requirements after the satellite signal is out of lock, the cumulative calculation error is generally reduced by reducing the hardware error of the inertial navigation equipment itself, but this will increase the cost of the inertial navigation equipment, and this method is only theoretically possible. Reduce the error, cannot eliminate the error, the positioning is still not accurate enough
[0003] The patent with the application number 201410378154.4 discloses a city vehicle navigation and positioning method based on street lamp assisted positioning. This method uses street lamps as reference landmarks for navigation and positioning, and uses the street lamp position as the vehicle position for navigation, which overcomes the problem caused by satellite navigation signals. The problem of being occluded and unable to accurately locate
However, this invention still has the following disadvantages: in actual situations, there is still a certain distance between the street lamp and the vehicle, and there will be a large error in taking the position of the street lamp as the vehicle position, resulting in inaccurate positioning

Method used

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  • Navigation and positioning method based on assistant positioning
  • Navigation and positioning method based on assistant positioning

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Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 As shown, this embodiment provides a navigation and positioning method based on assisted positioning.

[0033] A navigation positioning method based on auxiliary positioning, characterized in that: comprising the following steps:

[0034] (1) Set up auxiliary positioning equipment on the same side of the vehicle driving route, accurately measure the position coordinates of the auxiliary positioning equipment and number the auxiliary positioning equipment. A database corresponding to the position coordinates and numbers of the auxiliary positioning equipment is established, and the database is stored in the vehicle navigation system.

[0035] The number of the auxiliary positioning equipment needs to be obvious and easy to be detected. The auxiliary positioning equipment is set up on the driving route of the vehicle to provide auxiliary positioning information for the vehicle. Auxiliary positioning equipment includes street lamps on the same side of th...

Embodiment 2

[0057] Such as figure 2 As shown, this embodiment provides a navigation and positioning method based on assisted positioning.

[0058] The difference between Embodiment 2 and Embodiment 1 is that if the satellite signal is lost, the vehicle navigation system first uses the position information output by the inertial navigation system, and then performs step (5) to reset the position information output by the inertial navigation system.

[0059] The vehicle navigation system also includes an inertial navigation system, and the position information output by the inertial navigation system is reset periodically.

[0060] To implement the method provided by the present invention, when performing vehicle navigation and positioning, it is necessary to pre-judge the satellite signal status of the vehicle navigation system. If the satellite signal is normal, the position is determined based on the satellite positioning system, and the differential positioning method is used to impro...

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Abstract

The invention provides a navigation and positioning method based on assistant positioning. The method comprises the following steps: when a satellite signal is normal, a vehicle-mounted navigation system adopts position information output by a satellite positioning system; if the satellite signal loses lock, the vehicle navigation system calculates the current position coordinate of a vehicle detection sensor by using the position coordinate of assistant positioning equipment as well as the relative distance and the relative angle between the assistant positioning equipment and the vehicle detection sensor, takes the current position coordinate of the vehicle detection sensor as the current position coordinate of a vehicle, and outputs the position information. By adopting the navigation and positioning method based on assistant positioning, the navigation and positioning accuracy can be increased by using the assistant positioning equipment according to an algorithm.

Description

technical field [0001] The invention relates to a navigation positioning method based on auxiliary positioning. Background technique [0002] With the development of unmanned driving technology, high-precision navigation and positioning technology has attracted more and more attention. However, in high-precision navigation and positioning technology, how to ensure high-precision positioning requirements has always been a relatively prominent problem when satellite signals are out of lock. The current mainstream solution is to use inertial navigation equipment after the satellite signal is lost, and calculate the current position information by integrating the acceleration, velocity and attitude information measured by the inertial navigation equipment. However, in reality, in the integration process, the error of the inertial navigation device itself will gradually increase with the accumulation of time, and finally the accuracy of the calculation result cannot be guarantee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/16G01S19/49
CPCG01C21/165G01S19/49
Inventor 赵平靳旭叶华春章瑞菁赖成明
Owner MICROVAST POWER SYST CO LTD