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Inertial navigation system and navigation method

An inertial navigation system and inertial navigation technology, applied in directions such as navigation through speed/acceleration measurement, can solve problems affecting the performance of the navigation system, and achieve the effect of improving positioning accuracy and reliability

Active Publication Date: 2011-01-05
凹凸电子(成都)有限公司
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Problems solved by technology

[0006] Therefore, the difference between the trajectory 102 calculated by the inertial navigation system of the prior art and the real trajectory 104 of the moving object will affect the performance of the navigation system

Method used

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Embodiment Construction

[0020] A detailed description will be given below of embodiments of the present invention. While the invention will be described in conjunction with examples, it will be understood that it is not intended to limit the invention to these examples. On the contrary, the invention is intended to cover various alternatives, modifications and equivalents as defined within the spirit and scope of the invention as defined by the appended claims.

[0021] Furthermore, in the following detailed description of the invention, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known schemes, procedures, components and circuits are not described in detail in order to highlight the gist of the present invention.

[0022] The invention corrects the accumulative error of the inertial...

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Abstract

The invention discloses an inertial navigation system and a navigation method. The inertial navigation system comprises a track calculator, an error correction unit and a storage unit. The track calculator is used for calculating the position and direction of a moving object according to motion information of the moving object. The error correction unit is coupled with the track calculator and used for correcting the position and the direction of the moving object according to road reference information. The error correction unit comprises a steering angle ALU, and a controller coupled to the steering angle ALU and used for indicating the track calculator to correct the position and the direction of the moving object according to the steering angle, the position and the direction of the moving object, and the geographic information of a road. The storage unit is coupled to the error correction unit and used for storing geographic information of a road network and providing the road reference information according to the geographic information of the road network. In the invention, the errors of the navigation positioning information can be corrected according to the navigation map so as to further improve positioning accuracy and reliability of the inertial navigation system.

Description

technical field [0001] The present invention relates to navigation technology, in particular to an inertial navigation system and a navigation method. Background technique [0002] As one of the navigation systems, the inertial navigation system includes an arithmetic unit and multiple motion sensors, which are used to continuously calculate the position, direction angle, speed and other positioning information of the moving object. Inertial navigation systems or similar devices may also be referred to as inertial guidance systems, inertial reference platforms, and the like. [0003] When the inertial navigation system starts, the initial navigation information (for example, the initial position and direction of the moving object) is input by the outside world (for example, artificial or GPS receiver, etc.), and then the motion information of the moving object measured by the motion sensor (such as , linear velocity and angular velocity) are added to the initial navigation ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/16G01C21/18
Inventor 余晓光黄海权王洪章俞波许波纪永亮陈筠
Owner 凹凸电子(成都)有限公司
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