http://www.k-wave.org/forum/topic/equivalent-source-holography-for-1d-measured-data Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 00:41:27 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/equivalent-source-holography-for-1d-measured-data#post-7797 Wed, 09 Sep 2020 19:45:38 +0000 Bradley Treeby 7797@http://www.k-wave.org/forum/ <p>Hi Khan,</p> <p>In principle, you could run a similar type of optimisation, but I don't imagine it will be very well posed as you will be trying to fit a large number of unknowns (amplitude and phase or driving signal over a plane) with only a small amount of measurement data.</p> <p>As an aside, running the simulations in 2D only makes sense if your experimental geometry is 2D (e.g., you have a transducer that is very large in the out of plane direction).</p> <p>An alternative approach would be to setup an equivalent transducer (e.g., using a bowl if your transducer is bowl shaped, etc), and then run a simple optimisation over the transducer properties, e.g., radius of curvature, aperture diameter, etc. This problem will be much better posed as you will be fitting only a small number of parameters to your data. You could perform the optimisation using the inbuilt MATLAB routines which are relatively straightforward to use.</p> <p>Hope that helps,</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/equivalent-source-holography-for-1d-measured-data#post-7772 Tue, 25 Aug 2020 16:07:41 +0000 hko 7772@http://www.k-wave.org/forum/ <p>Hello,</p> <p>I was wondering if it is possible to use calculateMassSourceCW with the measured data given as a 1D matrix of complex pressure values. For instance, if I only have the azimuth beam profile (1D) measured for a linear array, can I calculate the equivalent source, which would give me the amplitude and phase of each element in the array? </p> <p>I have tried to modify the "Equivalent Source Holography Example" by simulating the measured data using kspaceFirstOrder2D with no luck yet. I wanted to know if I am missing anything before I continue.</p> <p>Thank you in advance,<br /> Khan </p>