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Kok Hwee
Joined: 02 Jan 2004
Posts: 2
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 02 Jan 2004 8:46 How to Model Concrete Wall for UWB Radar? |
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| Hi, I need to model a concrete wall in MATLAB for UWB Radar. The Radar is 2-10GHz. Is there a way to model the response using a FIR filter or is there another way?
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cross
Joined: 01 Jan 1970
Posts: 107
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| 03 Jan 2004 2:30 Re: How to Model Concrete Wall for UWB Radar? |
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This is tricky. You need to take into consideration that the constitutive parameters will change in the 2-10GHz range. Also If the concrete is reinforced this will introduce frequency selective effects.
Kind Regards
Cross
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flatulent
Joined: 19 Jul 2002
Posts: 4856
Helped: 292
Location: Middle Earth
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| 03 Jan 2004 2:38 Re: How to Model Concrete Wall for UWB Radar? |
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| The wall is mostly sand and stone. You can use a velocity of propagation of 1/2 or 1/3 of free space and an attenuation. Your biggest hardware problem is the impedance step between air and the wall. There is a US patent issued many years ago on an antenna that is matched to the concrete and transfers the energy nearly 100% in both directions.
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Kok Hwee
Joined: 02 Jan 2004
Posts: 2
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| 12 Jan 2004 7:44 Re: How to Model Concrete Wall for UWB Radar? |
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Thank you for the suggestions.
Regards.
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