Т.S. Piskunov - Engineer, Bauman Moscow State Technical University. E-mail: thedistorted@yandex.ru N.V. Baryshnikov - Dr.Sc. (Eng.), Director, Bauman Moscow State Technical University E-mail: baryshnikov@bmstu.ru I.V. Zhivotovskiy - Ph.D. (Eng.), Engineer, Bauman Moscow State Technical University. E-mail: ivj@bmstu.ru P.V. Chibisov - Deputy Head of Department, JSC GSKB Almaz-Antey named after A.A. Raspletin. E-mail: thedistorted@yandex.ru

Parallel transfer devices (PTD) are used to maintain parallel transfer of a laser beam to large distances. Angular coordinates of the transferred beam must be equal to angular coordinates of initial beam, or this information must be stored in the transferred beam parameters. These devices are used in high precision multi-channel laser optical-electronic systems (LOES) ? lidars and location stations. Angular measurement errors in such systems must be lower than arc. sec. PTD bulit with four pentaprisms is researched in this paper. It is possible to precisely and without a mechanical vibrations dependency, measure angular coordinates of the initial beam through measurement of the two transferred beams angular coordinates with this device. Describing laser beam as a unit vector and pentaprisms as matrices of rotation and reflection it is possible to achieve mathematical model of such PTD and analyse its precision characteristics. In this paper the influence of the mechanical vibrations on the parallel transfer errors is measured using this mathematical model. The algorythm of compensating the parallel transfer error has been es-tablished. The errors of initial setup of the pentaprisms can be nullified using this method. To achieve arc. sec. measurement precision the pre-cision of initial positioning of the pentaprisms must be maintained. The amount of that precision can be obtained with a mathematical model described in this paper. Level of the mechanical vibrations can dramatically increase the parallel transfer error and this PTD can be useless in such environment. These limitations can be obtained by conducting this mathematical modeling alongside of a vibrational experiment when a PTD is mounted on its operating position.

 

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