Abstract:

In this paper, the edge effect is extended to the digital domain. The digital edge is combined with the digital phase discrimination algorithm to obtain the transient frequency stability, the transient stability increased from 10 ^-4/100 ns to 10 ^-5/100 ns.The invention solves the problems that the analog phase coincidence detection technology has high requirements for the hardware circuit, that the device has drifts, and that the technology cannot be extended to the global stability. The digital method can be extended to short-term, medium-and long-term stability based on transient stability, and a more comprehensive description of frequency source phase noise from the aspects of root cause and effect can be given.

Key words: transient stability, phase coincidence detection, digital edge effect