Front view terminal guidance navigation positioning method of aircraft

Abstract

The invention discloses a front view navigation positioning method of an aircraft, comprising two stages of a remote navigation stage and a distance navigation stage; in the remote navigation stage, the position of the landmark centroid in a real-time figure is firstly identified, the estimated position of target centroid in the real-time figure is calculated by combining the position deviation between the target centroid and the landmark centroid in the geodetic coordinate system and current aircraft imaging attitude parameters furthermore, the relevant position difference value of the aircraft is calculated, and then a target search area is selected by taking the estimated position of the target centroid in the real-time figure; in the distance navigation stage, the target is directly positioned in the target search area, and then the relevant position difference value of the aircraft is calculated according to the direct positioning result. By means of landmark identification of the peripheral areas of the target, the target can be indirectly positioned for navigation, ensuring the robustness and adaptability of aircraft navigation positioning and overcoming the defect that the aircraft can be not directly positioned and navigated in the process of flight because the aircraft deviates from a planned flight path owing to errors.

Description

technical field [0001] The invention relates to the field of interdisciplinary science and technology combining imaging automatic target recognition with navigation guidance and positioning, and specifically relates to an aircraft navigation and positioning method, which uses the imaging system of the photoelectric platform on board the aircraft to obtain external reference information, and captures and positions the navigation and positioning targets, thereby The aircraft navigation system performs error correction to realize accurate navigation and positioning of the aircraft. Background technique [0002] Continuously improving the navigation accuracy of aircraft has always been an important research topic in the field of navigation and positioning technology. The error of the inertial navigation system increases with the accumulation of time, so relying on the inertial navigation system alone cannot meet the requirements of high-precision navigation. The imaging system ...

AI Technical Summary

Problems solved by technology

In the existing public literature, there is no report on the automatic positioning and recognition technology of targets with optical and geometric unrecognizability, and the automatic positioning and recognition of such targets is a technical problem that has to be solved in the field of navigation and positioning. A new technical solution to solve the automatic target recognition and positioning of this type of target

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