METHOD OF THE AIRCRAFT VELOCITY VECTOR AND DISTANCE TO THE GROUND OBJECT SIMULTANEOUS MEASUREMENT Russian patent published in 2018 - IPC G01C23/00 

FIELD: instrument engineering.

SUBSTANCE: invention relates to aircraft instrumentation making and can be used to perform flight tasks associated with the aircraft (AC) positioning relative to ground object when approaching it. For this, using the front view opto-electronic system, object is selected, to which it is necessary to measure the distance, aligning the aiming mark with its image, tracking the selected object on the observation time interval, which is necessary for determining of the AC velocity vector angular position parameters without changing the field of view angular orientation in the inertial space and analyzing the images formed by the image sensor (IS) on the same sequence of frames, which correspond to the construction of reference points images movement paths simultaneously formed sections pairs for determining of the AC velocity vector angular position parameters, to determine the AC displacement vector parameters in the observation interval using the average velocity vector orientation angles relative to the coordinate system associated with the IS field of view during the observation time by determining the chords pair continuations intersection point coordinates, (in determining of the velocity vector direction at the current instant of time) of the reference points images movement paths simultaneously formed sections, and determining the lines angular position parameters passing through the resulting intersection point and the projection center, which is used in the IS to form the optical image, measuring the object sighting line angular positions parameters at the observation interval beginning and at the end relative to the coordinate system associated with the IS field of view, by measuring the object images coordinates on the focal plane at the time of the analyzed image sequence first and last frames formation and determining the lines angular positions parameters passing through the objects images and the projection center, which is used in the IS to form an optical image, using the registered navigation data, determining the AC movement vector module during the observation time, determining the distance to the object using the AC movement vector module during the observation time, object sighting line angular positions and the AC movement vector module during the observation time measured parameters.

EFFECT: increase in information content.

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