On-Board Hydrogen Frequency Standart


The development purpose is to create an on-board hydrogen standard of frequency and time (OHFS), generating a highly stable frequency and phase reference signal for “Millimetron” space observatory on the basis of active hydrogen quantum generator. The device should provide continuous formation of a highly stable reference signal and sequence of 1 PPS pulses throughout the whole “Millimetron” mission lifetime. Standard reference signal is used for coherent reception and conversion of all signals used in interferometric mode and in the mode of independent observations.

Structural differences of “Millimetron” OHFS from previously developed and operated in space OHFS of "Radioastron" project are due to significantly higher demands on the short-term and long-term stability of the output frequency.