Roscosmos created multispectral cameras for the first satellite of «Arktika» satellite system
The «Arktika-M» satellite will conduct observations from a highly elliptical orbit, which is stretched out so that it approaches the circumpolar regions. Due to the shape of the orbit, the device will periodically move away from the Earth’s surface and take images of the same place but of different scales, its speed will be a different from the rotation speed of the Earth, and the shooting angle will be changing continuously as well. All of this increases the risks of additional image deformations and requires the use of special normalisation procedures that will only be effective if there are high-precision measurements of the motion parameters of the survey system. That is why the accuracy of the measurements and the coordinate reference of the instruments of the new satellite has been greatly improved.
Each device of the Arktika-M system will be equipped with two multi-zonal scanning devices (or MultiSpectral Scanner, MSS) that will back each other up, thus increasing reliability of the system. If any of the two fails, the other will continue to work, and while they work together it will improve quality of the resulting images. Radiation resistance of the device as a whole as well as of its individual components has been increased during the development of the MSS.