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Re: Convolve a spectrum (from MODTRAN) with a spectral response function [message #69360 is a reply to message #69357]

Thu, 31 December 2009 02:56

rogass
Messages: 200
Registered: April 2008

Senior Member

On 30 Dez., 04:55, Mat <m...@waikato.ac.nz> wrote:
> On Dec 30, 4:41 pm, Mat <m...@waikato.ac.nz> wrote:
>
> Sorry I will try again!
>
> Hi all
>
> I would like to convolve a spectrum (output from MODTRAN) with a
> spectral response curve (Landsat7 B62) and then integrate the
> convoluted result. As you can see from the example below the spectral
> resolution does not match.
>
> Eg. Spectrum:
>
> Wavenumber Radiance
> 800.0 7.52E-004
> 801.0 7.66E-004
> 802.0 7.58E-004
> 803.0 7.25E-004
> 804.0 7.23E-004
> 805.0 7.62E-004
>
> Eg. Response
>
> Wavenuber Relative Spectral response
> 800.00000 0.2
> 800.64051 0.29
> 801.28205 0.27
> 801.92462 0.28
> 802.56822 0.36
> 803.21285 0.36
> 803.85852 0.39
> 804.50523 0.41
> 805.15298 0.42
> 805.80177 0.43
> 806.45161 0.45
>
> Any help would be much appreciated.

Just search in this newsgroup for 'convolve fft' and you will find the
answer, i think.

Regards

CR

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[Message index]

		Re: Convolve a spectrum (from MODTRAN) with a spectral response function By: Paul Van Delst[1] on Mon, 04 January 2010 14:39
		Re: Convolve a spectrum (from MODTRAN) with a spectral response function By: MC on Sat, 02 January 2010 05:04
		Re: Convolve a spectrum (from MODTRAN) with a spectral response function By: rogass on Thu, 31 December 2009 02:56
		Re: Convolve a spectrum (from MODTRAN) with a spectral response function By: Mat on Tue, 29 December 2009 19:55
		Re: Convolve a spectrum (from MODTRAN) with a spectral response function By: Mat on Mon, 18 January 2010 13:51

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