the construction of the rovers is broadly linked to the environment , geographic situation into outer space , available materials and it is based on the techniques and the methods adapted to the essential need to find a conception that limit the vibration and presents more resistance and advantages , for the EMIRS model the simulation is used to expect thermal-infrared spectrum from the surface and atmosphere of Mars and this method is adapted to help plan EMIRS observation , similarly the GC can be easily utilized to separate and identifies the atmosphere composition in addition help encounter the problems of some instruments