I have developed a new interferometry system that works with an atomic clock. Now I want to unwrap my detected signal by an FPGA program that should be timed with the atomic clock. The question is whether I can use a myRio instead of an FPGA or not.
I think you cannot compare a FPGA chip with MyRIO.
A FPGA is a gate array where one can write the logic connections in a program written in VHDL development platform. These are the silicon chips, bare silicon chips!
MyRIO, in contrast is an embedded system that has an FPGA as a system component, but mainly wired around an ARM microcontroller with various analog and digital I/Os.
If you are talking about the interferometer for cross correlation of the input RF signals with various phase differences, a dedicated FPGA chip from a suitable vendor such as Xilinx, Altera etc. would be an ideal solution.
Excuse me for my own interpretation that by interferometry you meant the radio interferometer used to detect distant radio objects in the sky, a radio astronomy business!!!