Determine the speed of profiling

The speed of profiling can be determined with a variety of different methods. It must be determined because it is required for the conversion of the shear-probe samples into physical units and for transforming frequency spectra into wavenumber spectra. Methods for determining the speed of profiling include, but are not limited to:

1. Using the rate-of-change of pressure for a vertical profiler.
2. Using the rate-of-change of pressure, the pitch angle, and the angle of attack for a glider.
3. Using a flight model for a glider.
4. Using an onboard current meter.
5. Using a constant speed.
6. Using the speed recorded by an independent instrument after its record has been carefully aligned in time with the shear-probe data.