Aircraft reconnaissance camera optical axis calibration device and method based on inertial navigation and optical measurement

Abstract

The invention discloses an aircraft reconnaissance camera optical axis calibration device and method based on inertial navigation and optical measurement. The device comprises a target calibration instrument host and a main control unit, wherein the target calibration instrument host comprises an optical system, an image processing unit and an inertia measuring instrument which are installed in amachine shell; the heading axis direction of the inertia measuring instrument is consistent with the optical axis direction of the optical system; the optical system comprises a light source and a focusing lens group; and the main control unit calculates attitude angle parameters of the optical axis of the reconnaissance camera according to angle data of the inertia measuring instrument and axialdeviation angle data of the image processing unit. According to the invention, the calibration of the axial parallelism of the camera is realized through the combination of the optical system and theinertia measuring instrument, the calibration precision is high, and the use is convenient and fast. The calibration device is not only suitable for aircrafts (helicopters) to use under maintenance and assembly conditions, but also can be used in ship-borne, hangars, strong wind or narrow and messy working spaces.

Description

technical field [0001] The invention belongs to the technical field of weapons and equipment, and relates to an aircraft reconnaissance camera optical axis calibration device and method based on inertial navigation and optical measurement. Background technique [0002] Armed aircraft (helicopters) can carry missiles, rockets, cannons, bombs and other weapons to carry out air strikes on enemy targets. The strike effect depends on the accuracy of the weapon system. However, in actual use, due to the influence of factors such as temperature, shock, vibration and fatigue deformation, the aiming accuracy of the weapon system will change. School, referred to as the school target. [0003] Target calibration is the general term for all calibration and adjustment operations that coordinate the optical, electrical, and mechanical axes of each device in the weapon system with the reference coordinate axis or maintain a certain spatial position relationship. It is a regular, directl...

AI Technical Summary

Problems solved by technology

The existing target calibration method is to use the original method of topping the aircraft, aligning, erecting a target or drawing a target map, and then adjusting the target for weapon system target calibration. This method is time-consuming, laborious, low in efficiency, and low in accuracy. The complex structure of the equipment seriously restricts the efficiency of target calibration work, the hit rate of weapons and the speed of dispatching large aircraft groups

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