search

jerabaul29 / OpenMetBuoy-v2021a

An easy to build, affordable, customizable, open source instrument for oceanographic measurements - with global Iridium coverage
MIT License
43 stars 7 forks source link

implement low frequency dynamic cutoff for open water deployments #73

Closed jerabaul29 closed 1 year ago

jerabaul29 commented 1 year ago

TODO: implement the processing described in https://www.mdpi.com/2076-3263/12/3/110 fig. 7, so that data from open water can be cleaned up. As an extra round of processing that extends the wave packet class?

jerabaul29 commented 1 year ago

wip, developed and tested on private repo: https://github.com/jerabaul29/2022_imu_elevation_spectrum_cutoff_fig7/issues/2 . Result is fig. 7 low frequency cutoff filter.

jerabaul29 commented 1 year ago

implemented through https://github.com/jerabaul29/OpenMetBuoy-v2021a/commit/f1b4d4b1125b506c5ed36f49c60bed6fb1b5d936

jerabaul29 commented 1 year ago

As a note @jvoermans @tnn77 that may be useful for you too (though I think this is less interesting / needed / useful in sea ice as there is usually not much low energy noise pollution, and if there is, it usually just means that the energy is very small and is seen as a bump on the top of the noise * omega**-4 ).

jerabaul29 commented 1 year ago

See:

https://github.com/jerabaul29/OpenMetBuoy-v2021a/blob/f1b4d4b1125b506c5ed36f49c60bed6fb1b5d936/legacy_firmware/decoder/decoder.py#L200-L244

jerabaul29 commented 1 year ago

And @gauteh as discussed this should be what you need :) .