Laser observations were performed in Borowiec in three years 1977-79 of the satellites Geos A and Geos C. These data were processed by means of the program ORBITA and stations coordinates were calculated by dynamical method. Another solution was found with the processing by the program GRIPE of SAO. These two dynamical solutions are compared with the translocation solution Wettzel-Borowiec.
The Interkosmos satellite laser ranging system ar Borowiec is described. The system ranging precision has been evaluated. The calculations show the standard deviation associated with the observations to be in the range of ±75 cm. A brief discussion of the influence of the random errors upon calibrations and observations proper is given.