Airborne photoelectric pod equipment misalignment angle calibration method based on transmission alignment

Abstract

The invention provides an airborne photoelectric pod equipment misalignment angle calibration method based on transmission alignment. The method comprises the following steps: firstly, completing calibration of inner and outer orientation parameters of a camera and calibration of the camera and high-precision inertial navigation equipment in an indoor calibration field; then, completing calibration of inertial navigation equipment inside the pod and the inertial navigation equipment outside the pod in an outdoor calibration field; and finally, completing the calibration of the camera and theinertial navigation equipment inside the pod, so that the calibration of the photoelectric pod equipment is completed. The method provided by the invention has the following beneficial effects: according to the technical scheme provided by the invention, the photoelectric system can be simply and quickly calibrated, the contradiction that the camera needs to be high precisely calibrated in a stable control field and the inertial navigation equipment inside the pod needs to acquire alignment precision dynamically is solved, and the method is suitable for various types of photoelectric pod equipment such as visible light, infrared light, hyperspectral and the like and has high applicability.

Description

technical field [0001] The invention relates to the field of optical-mechanical-electrical integration, in particular to a method for calibrating misalignment angles of airborne photoelectric pod equipment based on transfer alignment. Background technique [0002] The airborne photoelectric pod equipment integrates a variety of sensors to capture and reconnaissance ground targets, and carry out identification and precise positioning. With the improvement of the accuracy of sensor devices, the performance of the airborne photoelectric pod equipment has also been greatly improved, not only more stable , the image resolution is higher, and the volume is lighter, thus providing a hardware guarantee for airborne precise target positioning. [0003] In the process of target positioning, due to the error between the coordinate system of the inertial navigation system and the coordinate system of the optical axis of the photoelectric system, the positioning accuracy cannot meet the ...

AI Technical Summary

Problems solved by technology

Because there is an error between the coordinate system of the inertial navigation system and the coordinate system where the optical axis of the photoelectric system is located, and the MEMS inertial measurement unit built in the photoelectric system has low precision, it is impossible to obtain high-precision heading angle through the method of inertial self-seeking, resulting in camera / The calibration accuracy of MEMSIMU photoelectric components cannot meet the target positioning index requirements

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