spectral analysis for discontinuous time series data

HI everyone

I am having discontinuous time series data.like I have 3 years of current data but for some issues the ADCP sensor was not worked for 2 months..

So I want to know spectral analysis for entire three years.

can anybody help me out..???

Answer 1

[Wayne King]

You have a couple options:

1.) You can interpolate the missing data and obtain interpolated values for the missing data.

2.) You can use something like the Lomb-Scargle periodogram:

Lomb-Scargle