A method and device for determining the position and attitude of an aircraft

Abstract

The invention discloses an aircraft pose determining method and an aircraft pose determining device. The method comprises the steps of acquiring a reference map and a real-time image of an airborne camera; correcting the resolution ratio of the real-time image, wherein the corrected resolution ratio of the real-time image is consistent to the resolution ratio of a standard texture image; matching and positioning the corrected real-time image and the standard texture image, and determining the matching region of the corrected real-time image in the standard texture image; selecting at least three non-collinear characteristic points in the matching region of the standard texture image, at least determining three corresponding control points; and constructing a space resection calculating equation according to the control points, thus determining the imaging position and the imaging posture. According to the method, the three-dimensional information provided by a topographic map corresponding to the reference map is combined to carry out reverse calculation, meanwhile, the flying position and posture data of an aircraft can be obtained, so that the positioning relative to the reference topographic map can be obtained directly, the accumulated error is avoided, and the precision is high.

Description

technical field [0001] The present invention relates to the technical field of navigation and automatic control in the field of communication, in particular to a method and device for determining the pose of an aircraft. Background technique [0002] During the navigation and control process of spacecraft, UAV and other aircraft, the position and attitude of the aircraft is the key information for safe flight and mission execution. Commonly used methods for determining the flight position and attitude of an aircraft include methods based on inertial navigation, GPS-based navigation, and terrain-matching navigation. [0003] The inertial navigation method uses navigation sensors such as accelerometers and gyroscopes to measure motion information. This method uses the real-time acceleration measurement of the accelerometer and performs integral calculations to obtain position and attitude information during the flight. However, this method uses integral calculations to determ...

AI Technical Summary

Problems solved by technology

The usual methods based on radio measurement methods and inertial navigation methods have large energy consumption and serious error accumulation. Using GPS positioning methods based on navigation satellite signals has the problem of being restricted by people. Terrain matching positioning requires sophisticated and expensive altitude measuring instruments, which is difficult to popularize on general aircraft.

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