For the First Time in Sodar History...
Aug 01 2016
... a wind energy certification campaign has started with absolutely no post filtering of the data. Moreover, there has even been no preliminary intercomparison period before the official start of the experiment. Remtech (France) brought one PA0 Sodar (belonging to a customer and a few years old) onto the WindGuard test site and simply started it. WindGuard specialists have retrieved the Sodar data and made the statistical intercomparison analysis with their tower data to which Remtech has never had access.
The fact that our instrument is capable of outputting only good data (never any outlier) is fundamental. You can trust the data, and you do not have to spend a lot of time and money trying to “filter” the data after the fact with no assurance regarding the final result. The recovery rate is very high.
This is achieved thanks to: Multiple frequency coded transmission, noise subtraction in the Fourier domain, the “apparent” angle of arrival signal processing, and phase gradient versus frequency.
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