Geographic Tracking Method Based on Coincidence of Optical Axis and Inertial Axis

Abstract

The invention discloses an optic axis and inertia axis superposition-based geographic tracking method which comprises the steps of computing the space pose of a carrier aiming line in real time by using a space two-point geometric algorithm according to the positioning data and the self position information of a target, computing the space angle of the aiming line relative to a carrier coordinate system by being combined with the carrier space pose and the space coordinate transformation principle, sending the angle to a servo control unit, and adjusting corresponding space pose of a turntable by the servo control unit so as to complete the geographic tracking to the target. The method is different from the image tracking method in terms of theory, therefore, the method is not influenced by the cloud, the mist and the obstacles; and when being used on aircrafts, the method is capable of avoiding the problem of losing the target due to strenuous vibration or sight shielding, so that the scouting and searching capabilities of the battlefield weapon systems are remarkably improved. The method can also be used for guide devices of various guided missiles, so as to improve the accurate attacking capability to ground targets.

Description

technical field [0001] The invention belongs to the field of photoelectric reconnaissance and target tracking, and mainly relates to a geographical tracking method for a target, in particular to a geographical tracking method based on the coincidence of an optical axis and an inertial axis. Background technique [0002] The photoelectric tracker of a modern weapon system has the functions of target reconnaissance, search and tracking. The current automatic tracking function is divided into three tracking methods: laser, infrared and TV according to the form of the target detector. The basic principles of these three tracking methods are as follows: when the target detector captures the target, the CCD (charge-coupled device) converts the target scene into an electronic image, and then the signal processing unit measures the off-target of the image and automatically outputs the off-target amount. Then the difference taker converts the miss amount into an electrical signal an...

AI Technical Summary

Problems solved by technology

The technical solution provided in the paper does not propose the requirement that the optical axis and the inertial axis of the photoelectric load system need to coincide. Therefore, only relying on the calculation of the space vector angle of the target and inputting it to the servo control unit, the servo control unit adjusts the angle of the stable turntable. Can make the target appear in the field of view of the camera, but cannot guarantee the bull's-eye position of the target in the field of view

Therefore, using the geographic tracking method in the paper alone cannot maintain continuous and stable tracking of the target.

Images