Aiming line wide-area scanning control method based on airborne photoelectric system

Abstract

The invention belongs to the technical field of airborne photoelectric reconnaissance monitoring, and particularly relates to an aiming line wide-area scanning control method based on an airborne photoelectric system. The attitude of the aerial carrier and the angle of the photoelectric platform are converted; by combining the speed, the height and the scanning starting point of the carrier planeduring level flight, the movement speed of the photoelectric platform is calculated in real time according to the sensor frame frequency, the field angle, the overlapping rate and the like, the influence of carrier plane disturbance, especially course disturbance, can be overcome, three attitude angles of the carrier plane deviating from the course are corrected, and seamless geographical scanningof a photoelectric system is guaranteed. In the photoelectric system, a fast-adjustment reflector performs reverse scanning compensation, a plurality of continuous images on the ground are obtained through stepping staring of aiming lines, and a wide-area image on the ground is spliced through an image processing technology in combination with a wide-area scanning control process. According to the method, the staring function of the photoelectric system is achieved while the wide-area scanning function of the airborne photoelectric system is achieved, and the capacity of the photoelectric system for permanently reconnaissance and monitoring of the area where a target is located can be improved.

Description

technical field [0001] The invention belongs to the technical field of airborne photoelectric reconnaissance and monitoring, and in particular relates to a wide-area scanning control method for line of sight based on an airborne photoelectric system. Conduct persistent reconnaissance and surveillance of the target area. Background technique [0002] The current information warfare puts forward higher requirements for target reconnaissance and surveillance. Continuous, comprehensive, accurate and efficient theater surveillance and target reconnaissance are one of the important conditions for winning an information warfare. A reconnaissance and surveillance system is an optoelectronic mission equipment based on a manned / unmanned aircraft as a carrier platform. It has the characteristics of wide coverage area, long range, precise geographic positioning of targets, and real-time reconnaissance. The main combat mission is to monitor and control battlefields in sensitive areas. T...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the current photoelectric system does not have the problem of large-scale seamless geographical scanning of the ground, and other scanning methods may easily cause missed scanning. Or the method of closing the position loop at both ends of the scan is not high in control accuracy in actual engineering applications, resulting in inconsistent scan overlap rates; or the trajectory of the line of sight moving on the ground is a curve instead of a straight line, without considering the influence of the course disturbance. And it does not take into account the error caused by the photoelectric system rotating around the flight path when the aircraft is in level flight, resulting in a skewed curve instead of a straight line perpendicular to the flight path, which is not conducive to image stitching

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