A characteristic feature of the satellite measurements is an intrisic ambiguosity of measured physical data,
caused by the movement of the spacecraft along its orbit (e.g. 7.9 km/s on LEO).
As the registered time variations of particle flux is caused by superposition of the time and the spatial structure, to distiguish them, a correlated multi-satellite measurement is necessary.
Experiments of this kind with DSP-IEP-SAS participation involved the ACTIVE, APEX, INTERBALL-X and INTERBALL-A, where the main satellite was allways followed by the MAGION microsatellite.
The DOK-S was developed and constructed specifically for MAGION-type microsatellites
in the cooperation between DSP-IEP-SAS and former Department of Radioelectronics
of Technical University in Košice (presently
The device includes two pairs of detectors, one is oriented in parallel with the microsatellite spin axis, another is perpendicular. The DOK-S operates with the 80C85 microprocessor that provides parallel
service for registration electronics as well as for command and data interface. The device includes also an electronic module that is built-in into the spacecraft structure.
The DOK-S was first launched on board of the MAGION-2 microsatellite in the frame of ACTIVE project (1989), another three models of the device were launched to space on board of the microsatellites MAGION-3, MAGION-4 and MAGION-5.