METHOD OF AVERAGING ERRORS BY ASTROINERTIAL NAVIGATION SYSTEM

摘要

FIELD: instrument engineering.;SUBSTANCE: invention relates to the field of instrument engineering, namely to astroinertial navigation systems in which the basic navigation information (counted coordinates and heading) is corrected by signals coming from the astro-sighting device (teleblock), and used in the on-board equipment of aerospace objects. It is a method of averaging errors by a two-frame astronertial navigation system containing a platform with teleblock installed on it, sensitive elements in the form of three accelerometers and three laser gyroscopes, placed in a two-frame cardan joint, which provides direction of the teleblock to a given design point and includes an inner frame (horizontal-altitude) and an external frame (vertical-azimuthal) with the cardan joint rotation angle sensors mounted on them and its protrusion angle processing engines, the outputs of which are connected with the inputs of the servo control system of the cardan joint. At the same time, in the astronertial navigation mode, the star is sighted by turning the cardan suspension frames to the calculated angles with the subsequent determination of the angular corrections. Then the vertical azimuthal frame is rotated by ±180 degrees relative to the calculated angle, and the angle of the horizontal-altitude frame changes sign and a repeated sighting of the star is performed, after which the angular corrections are determined as the arithmetic average of the two sighting results.;EFFECT: technical result of the invention is to increase the accuracy of the calculation of the coordinates of the sighting object by the two-frame astroinertial navigation system.;1 cl, 13 dwg