Measure method for confirming roll angle of revolving body target based on spiral line method

Abstract

The invention discloses a measure method for confirming a roll angle of a revolving body target based on a spiral line method. The measure method comprises the following steps: Step S1: Obtaining an angle corresponding to an image center line of the revolving body target based on a traditional spiral line method of measuring the roll angle; Step S2: determining a point on the image center line of the revolving body target, and calculating the azimuth angle and the pitching angle, and obtaining the direction vector of the connecting wire of the point and a camera origin; Step S3: using a cosine matrix to create a carrier coordinate system without regard to the effect of the roll angle, and projecting the direction vector obtained in the Step S2 to the carrier coordinate system, and obtaining the projection vector corresponding to the direction vector; Step S4: calculating the planimetric projection vector formed by the revolving body target center line and the spiral line initiative generating line in the carrier coordinate system, and calculating the included angle of the plane and the projection vector obtained in the Step S3; and Step S5: calculating the difference value of the angle corresponding to the image center line of the revolving body target in the Step S1 and the included angle value in the Step S4.

Description

technical field [0001] The invention relates to the fields of digital image processing, photogrammetry, computer vision and the like, in particular to a measuring method for determining the rolling angle of a revolving object based on a helical line method. Background technique [0002] In military, aerospace and other fields, the three-dimensional attitude of space moving objects is an important technical index reflecting its flight state. Obtaining these indexes is of great significance for analyzing and evaluating the motion characteristics of space objects and further optimizing system design. There are many methods to solve the attitude measurement of the pitch angle and yaw angle of the target, but the measurement of the roll angle of the target is seldom discussed, and it is used for the attitude parameters of space targets such as missiles and rockets. And extremely important. In the measurement of roll angle, there is a method of intersecting measurement with optic...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a new measurement method for determining the target roll angle of a revolving body based on the helix method, so that it can effectively solve the problems caused by the projected direction line and the center of the revolving body image. The problem of roll angle error caused by line inconsistency further improves the accuracy of roll angle calculation

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