Yu.M. Urlichich, A.V. Kruglov, V.M. Vatutin, E.P. Molotov
It is shown in the article, that the uninterrupted communication of the Earth with the other components of manned expeditions to the Mars, including the establishment of a habitable base on the Mars surface, can not be provided without using (within the radio technical system for communication between the Earth and cosmonauts of the expedition to the Mars) a satellite near-planet data-relay communication system, built on the basis of using the repeater-satellites, placed in stationary orbits of the Mars.
For solution of the same tasks the data-relay satellite subsystem shall be a part of the communication system which is operated in the durable habitable base located on the Mars surface.