### LDV post processing app

This Matlab app has been created and used for post processing of velocity signal obtained by
laser-doppler vibrometer. Main goals of this tool have been:
- A time series processing part which converts nummeric velocity signal (m/s) to "m" i.e. here in range of 10e-6 m
- Getting the accurate range of distribution of amplitudes in terms of micrometers turns HF tool to excellent suplement for
construction optimization.
- A single channel procedure, means: for each point; whole thing must be reprocessed
- So, this app onsiderably reduced energy needed to do it
- See more about LDV link

Now this part of te app does the system simluation.
- Firstly, if you have measured the system FRF you can plot it as reference curve
- Here you can see the real world FRF v.s. analytical curve
- If they match well (or even not)
- One can see the parameters of this systems in Laplace domain
- also, the parameters of this systems in Z domaina are approximated with filter
- One can simulate the system and get the LTI system forced response, to your acceleration input, all three derivatives
- Hence, it is possible to compare LTI system forced response with real forced response or

see how they differ statistically in terms of displacements or
- Or evaluate spectral content