Dear all, may I know how can we enter the extinction coefficient value in Stk?
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Reham Wafaee
el 12 de Sept. de 2024 a las 11:44
Comentada: Reem
el 16 de Sept. de 2024 a las 8:44
I'm using STK system tool kit with matlab and in the laser environment we can use Beer-Lambert law by adding the extinction coefficient so suppose we have a cloud causing attenuation equals 1.2dB/km,how can I enter this value in the extinction field field in Stk, it has to be in m-1 and I have to identify the layer top.
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Prasanna
el 16 de Sept. de 2024 a las 7:03
Hi Reham,
It is my understanding that you want to convert the units used for the extinction coefficient in the STK system tool kit. To use the Beer-Lambert law in the Systems Tool Kit (STK) for modelling laser propagation through a medium like a cloud, you need to convert the attenuation value from dB/km to m⁻¹.
You can convert the attenuation by changing it into a linear scale in terms of power loss per kilometre by performing . For 1.2 db/km, the linear loss becomes which is approximately equal to 1.318. Now since the linear loss is in km⁻¹, we convert it to meter inverse by dividing by 1000. Therefore, the extinction coefficient becomes 0.001318 m⁻¹.
You can then enter the calculated extinction coefficient into the extinction parameters and specify the layer top based on the data and assumptions for your scenario. You can then run a simulation to verify that the attenuation effects are accurately modelled. By following the above steps, you can effectively model the attenuation effects of a cloud layer in STK using the Beer-Lambert law with the extinction coefficient derived from your specified attenuation values.
Hope this helps!
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Reem
el 16 de Sept. de 2024 a las 8:44
Hi Prasanna,
Thank you so much for your reply.
May I ask you what is the defintion of layer top here? Is it the cloud thickness? or the atltitude difference between Tx and Rx?
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