can i simulate a lfm signal,frequency ranges from 1khz to 2khz at a range of 1km. is there any limitations to use lower frequency in this model. can i take 0.5m as dx.also you are not talking about near field and far field patterns.is it applicable to both.can i simulate data after 1km distance from the transmitter.if not can u suggest me a new simulating tool box for the same.
i have tried with 1khz cw signal at a 1 km distance but i am not able to get the expected pattern.
kWave
A MATLAB toolbox for the timedomain
simulation of acoustic wave fields
low frequency simulation
(2 posts) (2 voices)
Posted 3 months ago #

Hi alex007,
Yes you can use kWave in this scenario. The thing to consider is how many grid points you will need. You can calculate the required grid spacing based on the sound speed and number of points per wavelength (you need at least 3, and sometimes up to 10 for strongly heterogeneous media).
dx = sound_speed / (PPW * frequency)
You can then calculate how many grid points you need for the simulation. The biggest simulations we've ever run are 4096^3 (this is challenging), but 1024^3 and under is fairly straightforward.
Brad.
Posted 3 months ago #
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