Question

What is the cause of lock-in phenomena in RLG?

(a) Backscatter

(b) Low intensity

(c) High intensity

(d) Low standing wave ratio

This question was posed to me in an interview.

I need to ask this question from Gyroscopes topic in section Satellite Radio Navigation  & Inertial Navigation of Avionics

Answer 1

Correct option is (a) Backscatter

To explain: Lock-in phenomenon leads makes the RLG insensitive to low angular rates. The cause of the lock-in phenomenon is backscatter within the cavity, usually resulting from imperfections in or particulates in the mirror surfaces.