Online Estimation of ARW Coefficient of Fiber Optic Gyro

Table 1

Random noise sources in FOG.

Noise types	Noise Coefficient	Allan variance (𝜎^2(𝜏))	PSD
Angle random walk	𝑁	𝑁^2/𝜏	𝑁^2
Quantization noise	𝑄	3𝑄^2/𝜏^2	(2𝜋𝑓)^2𝑄^2𝑇
Bias instability	𝐵	2𝐵^2ln2/𝜋	𝐵^2/2𝜋/𝑓
Angular rate random walk	𝐾	𝐾^2𝜏/3	(𝐾/2𝜋)^2/𝑓^2
Ramp noise	𝑅	𝑅^2𝜏^2/2	𝑅^2/2𝜋𝑓^3