Calculating Significant Wave Height in both Non-Dir/Directional Wave Spectrum
02/25/2010 1:17 AM
I am now doing an embedded module specifically to calculate the significant wave height (Hm0) for the ocean wave. As I know, Hm0 = 4*sqrt(m0), where m0 is zeroth order of the wave spectrum.
For testing purpose, i using function generator to generate a 100Hz sine wave with 3Vpk-pk signal to my module, and capture those signal using ADC.Then the value return from my module is 4.19, which is 3*sqrt(2) = 4.24. I tried on others Vpk-pk, and the results always follow this formula,Vpk-pk*sqrt(2).
I get this formula from previous work, but the person in-charge not working here anymore. I m doubt with this formula since I never saw it. Anyone here can help me prove my answer and guide me in this?