Carrier course angle calculation method based on polarization compass

A calculation method and heading angle technology, which are applied in the field of carrier heading angle calculation based on polarized compass, and can solve the problems of complex calculation method, large amount of calculation, and unfavorable real-time calculation.

Active Publication Date: 2015-09-02
青岛智融领航科技有限公司
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Problems solved by technology

The applied for patent "method for calculating navigation direction angle by using sky polarization distribution law", application publication number CN 102052914, uses the sampling values ​​of multiple sampling points to form a response matrix to determine the position of the sun meridian, the calculation amount is large, and the calculation method is complicated. Not conducive to real-time computing

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  • Carrier course angle calculation method based on polarization compass
  • Carrier course angle calculation method based on polarization compass
  • Carrier course angle calculation method based on polarization compass

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Embodiment Construction

[0073] Such as figure 1 Shown, the concrete realization steps of the present invention are as follows:

[0074] 1. In the static state of the carrier, use the output values ​​of the accumulators installed along the two levels to determine the horizontal attitude of the carrier: the basic equation of the inertial navigation system is as follows:

[0075] f → b = v → . et b + ( 2 ω ie b + ω → et b ) × v → et b - g → ...

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Abstract

The invention relates to a carrier course angle calculation method based on a polarization compass. The polarization compass comprises two acceleration meters in the horizontal direction and three polarization sensors. The carrier course angle calculation method based on the polarization compass includes that firstly, using the acceleration meters in the horizontal direction to acquire the horizontal posture (pitch angle theta and roll angle gamma) of the carrier; secondly, using the geographical location information and time information of the carrier to calculate a unit sun vector St under a geographic coordinate system; thirdly, using the polarization sensors on the carrier to measure a polarization azimuth angle to calculate a unit sun vector Sm under a polarization sensor module coordinate system; finally, using the horizontal posture information and sun vector information to build the transformation relation of the unit sun vector between the geographic coordinate system and polarization sensor module coordinate system, and confirming the course information Psi of the carrier. The carrier course angle calculation method based on the polarization compass has advantages of high precision, less calculated amount, strong compatibility and the like.

Description

technical field [0001] The invention relates to a method for calculating a carrier heading angle based on a polarization compass, which can be used to obtain high-precision heading angle information for an aircraft, mobile robot or ground vehicle in a static or moving state, and improve the initial alignment speed of the aircraft, mobile robot or ground vehicle and navigation accuracy. Background technique [0002] The attitude of the carrier is an important information in the process of carrier navigation. Compared with the pitch angle and roll angle, the heading information is more difficult to obtain accurately. The traditional attitude determination measurement system includes inertial navigation system, astronomical navigation system and geomagnetic navigation system. Inertial navigation Technology can provide full-dimensional navigation information, which is an indispensable means of navigation in the field of modern navigation, especially in the field of military navi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/20
CPCG01C21/20
Inventor 郭雷杜涛杨健李晨阳齐孟超张霄
Owner 青岛智融领航科技有限公司
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