Questions tagged [allan-deviation]
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7 questions
0 votes
2 answers
108 views
Designing digital filters on basis of $\sigma(\tau)$ diagrams
I have read some articles on Allan deviation and understand that the slope of the $\sigma(\tau)$ diagram corresponds to the exponent of power-law noise: $$S_y(f)\sim f^\alpha \implies \sigma(\tau) \...
- 134
1 vote
0 answers
87 views
how to read a Rate Random Walk (RRW) on the Allan Variance Plot
I'm trying to measure the ARW (angular random walk) and RRW of a gyro using the Allan Variance Plot. Reading the ARW raises no issue: I get the right value at Tau=1s. When it comes to read RRW, all ...
1 vote
2 answers
183 views
Simulating Quantization Noise based on Allan Noise Coefficient
I have an observation sequence from an accelerometer from which I have computed an Allan deviation curve and derived the noise coefficients of the various noise contributions. Based on these ...
- 11
1 vote
1 answer
240 views
Interpretation of a non-canonical Allan Variance plot
I am currently working on characterizing the noise sources of a Global Navigation Satellite System (GNSS) sensor using an Allan Variance plot, which is commonly employed to analyze frequency stability ...
- 13
0 votes
1 answer
122 views
Why different noise terms are read at specific sampling interval in Allan Variance plot?
I was trying to identify Quantization Noise, Angle Random Walk, Bias Instability, and Rate Random Walk from Allan Variance plot which as Allan deviation on y axis and Sampling Time Interval ...
- 121
0 votes
0 answers
47 views
Instability parameter from Allan Deviation when noisy
I have some simulated outputs from a model of a sensor that a teammate wrote. I'm attempting to verify, using Allan deviation, that random walk and bias instability were modelled correctly. To do this,...
- 131
3 votes
1 answer
366 views
What is the relation between the 1/f spectral noise density and the Allan deviation noise floor? (I found a value of $\frac{5}{3}$)
I have some noise density that consists of 1/f noise and white noise like so: I then select an arbitrary sampling frequency $f_S$ and data length $n$ and compute a time domain noise data vector like ...
- 488