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amsu_channels

PURPOSE ^

AMSU_CHANNELS Returns information about the AMSU A and B channels

SYNOPSIS ^

function [v0,nbands,dv1,dv2,bwidth,nedt] = amsu_channels( channelnrs )

DESCRIPTION ^

 AMSU_CHANNELS  Returns information about the AMSU A and B channels

    The function describes the main properties of the AMSU A and B
    channels.

    The bands of each channel are centered at v0 +- dv1 +- dv2,
    and each band has the width *bwidth*.

 FORMAT   [v0,nbands,dv1,dv2,bwidth,nedt] = amsu_channels( channelnrs )
        
 OUT   v0           Centre frequency of channels
       nbands       Number of bands for the channels (1, 2 or 4)
       dv1          First order band seperation
       dv2          Second order band seperation
       nedt         Std dev for thermal noise [K]
 IN    channelnrs   Vector with channel numbers

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

DOWNLOAD ^

amsu_channels.m

SOURCE CODE ^

0001 % AMSU_CHANNELS  Returns information about the AMSU A and B channels
0002 %
0003 %    The function describes the main properties of the AMSU A and B
0004 %    channels.
0005 %
0006 %    The bands of each channel are centered at v0 +- dv1 +- dv2,
0007 %    and each band has the width *bwidth*.
0008 %
0009 % FORMAT   [v0,nbands,dv1,dv2,bwidth,nedt] = amsu_channels( channelnrs )
0010 %
0011 % OUT   v0           Centre frequency of channels
0012 %       nbands       Number of bands for the channels (1, 2 or 4)
0013 %       dv1          First order band seperation
0014 %       dv2          Second order band seperation
0015 %       nedt         Std dev for thermal noise [K]
0016 % IN    channelnrs   Vector with channel numbers
0017 
0018 % 2003-10-01   Created by Patrick Eriksson
0019 
0020 
0021 function [v0,nbands,dv1,dv2,bwidth,nedt] = amsu_channels( channelnrs )
0022 
0023 
0024 A = [
0025 23800        0     0    1  270     0.30    ; ...   % 1
0026 31400        0     0    1  180     0.30    ; ...   % 2
0027 50300        0     0    1  180     0.40    ; ...   % 3
0028 52800        0     0    1  400     0.25    ; ...   % 4
0029 53596      115     0    2  170     0.25    ; ...   % 5
0030 54400        0     0    1  400     0.25    ; ...   % 6
0031 54940        0     0    1  400     0.25    ; ...   % 7
0032 55500        0     0    1  330     0.25    ; ...   % 8
0033 57290.344    0     0    1  330     0.25    ; ...   % 9
0034 57290.344  217     0    2  78      0.40    ; ...   % 10
0035 57290.344  322.2  48    4  36      0.40    ; ...   % 11
0036 57290.344  322.2  22    4  16      0.60    ; ...   % 12
0037 57290.344  322.2  10    4  8       0.80    ; ...   % 13
0038 57290.344  322.2   4.5  4  3       1.20    ; ...   % 14
0039 89000        0     0    1  6000    0.50    ; ...   % 15
0040 89000      900     0    2  1000    0.37    ; ...   % 16
0041 150000     900     0    2  1000    0.84    ; ...   % 17
0042 183310    1000     0    2  500     1.06    ; ...   % 18
0043 183310    3000     0    2  1000    0.70    ; ...   % 19
0044 183310    7000     0    2  2000    0.60    ; ...   % 20
0045 ];
0046 
0047 
0048 v0     = A( channelnrs, 1 ) * 1e6;
0049 nbands = A( channelnrs, 4 );
0050 dv1    = A( channelnrs, 2 ) * 1e6;
0051 dv2    = A( channelnrs, 3 ) * 1e6;
0052 bwidth = A( channelnrs, 5 ) * 1e6;
0053 nedt   = A( channelnrs, 6 );

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