Hamid Fanaie Posted May 17, 2010 Report Share Posted May 17, 2010 (edited) Hi all,I have a basic question on the interoperation of the ST-Wave spectral graphs.When I visualise the Spectrum in The 2D polar plane it shows the complete characteristic of the spectrum as shown in the following Figure:http://i39.tinypic.com/2vm7py1.jpgUsing the ‘Integration plots’ box for frequency and direction creates the following plot for the shown polar spectrum:http://i40.tinypic.com/1694y9v.jpghttp://i40.tinypic.com/308cpkp.pngI do not know how SMS make these plots and how they are related to the 2D polar spectrum. In other words:1- What is the direction of the ‘Energy vs. Frequency’ plot?2- What is the frequency for the ‘Energy vs. Direction’ plot?Any inputs on this is highly appreciated.Best regards,Hamid Edited May 17, 2010 by Hamid Fanaie Quote Link to comment Share on other sites More sharing options...
Erik McCarthy Posted May 17, 2010 Report Share Posted May 17, 2010 There is not a specific direction for the ‘Energy vs. Frequency’ plot but instead it is an average energy for all directions at the at the frequency. For example, if the energy reads as 3 and the frequency reads as 0.5 on the Energy vs. Frequency’ plot, then 3 would be the average energy for all directions on the 0.5 frequency. The same is true for the ‘Energy vs. Direction’ plot. Quote Link to comment Share on other sites More sharing options...
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