Angle measurement information-based multi-target identity identification method

Abstract

The present invention discloses an angle measurement information-based multi-target identity identification method. The method comprises the steps of targeting all targets observed by all observationstations to identity recognition, wherein the identity identification for two targets observed by two observation stations is as follows: establishing a target angle measurement model; calculating theordinates of observation stations in an earth-centered and earth-fixed coordinate system; calculating unit vectors for the angle measurement lines of two targets; calculating the length of a common vertical line between the angle measurement lines of the two targets; calculating a detection threshold for checking the test statistics; and conducting the identity identification for two targets. The method is small in calculation amount and high in accuracy. The high identification accuracy is realized in a complex environment based on the method.

Description

technical field [0001] The invention relates to the field of measurement technology. More specifically, it relates to a multi-target identity recognition method based on angle measurement information. Background technique [0002] Through high-precision angle measuring equipment to measure the angle of the target at multiple observation stations, and use the intersection of each angle measuring line of sight to calculate the position of the target, it has been widely used in various military and civilian fields. The correct identification of target identity based on the angle measurement data of the observation station is the premise of the accuracy of this cross-location method. The essence of this problem is to eliminate false intersections from the intersection combinations of multiple angle measurement sights from multiple targets of multiple informants, and find out the correct combination belonging to the same target, that is, target identity recognition. For this pr...

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Problems solved by technology

[0004] The object of the present invention is to provide a multi-target identity recognition method based on angle measurement information for the problem of target identity recognition based on angle measurement information, so as to avoid the existing closest field method and joint probability data association method from distorting the target track. The dependence on information or prior information overcomes the problem of large computational load of the maximum likelihood method and hierarchical correlation algorithm, and at the same time can achieve high recognition accuracy in complex environments, and realize rapid identity recognition and cross positioning of multiple targets

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