Sequoia LISST-100X, Руководство пользователя

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LISST-100X User’s Guide 103
The following lines of code in MATLAB will compute the lower, upper and median size in
microns of each bin for both instrument types. See also this article on Sequoia’s homepage:
http://www.sequoiasci.com/Articles/ArticlePage.aspx?pageid=150
The following lines of code in MATLAB will compute the lower, upper and median angles (in
degrees) for the VSF measurement in air and water:
rho=200^(1/32);
x = 1.25;
%lower limit for first size range for type B, spherical particles
x = 2.50; %lower limit for first size range for type C, spherical particles
x = 1.00; %lower limit for first size range for type B, randomly shaped
particles
x = 1.90; %lower limit for first size range for type C, randomly shaped
particles
bins(:,1) = x*rho.^([0:31]); %lower limit
bins(:,2) = x*rho.^([1:32]); % upper limit
bins(:,3) = sqrt(bins(:,1).*bins(:,2)); %mid-point
B_all = logspace(0,log10(200),33)*0.1; %create 33 logspaced angles over a
1:200 dynamic range starting at 0.1degrees (type B LISST).
B_all = B_all';
ANGLES_O2(:,1) = B_all(1:32); %The lower limits are the first 32 (of 33)
ANGLES_O2(:,2) = B_all(2:33); %The upper limits are the last 32 (of 33)
ANGLES_O2(:,3) = sqrt(ANGLES_O2(:,1).*ANGLES_O2(:,2)); %Midpoints.
C_all = logspace(0,log10(200),33)*0.05; %create 33 logspaced angles over a
1:200 dynamic range starting at 0.05degrees (type C LISST).
C_all = C_all';
ANGLES_O2(:,4) = C_all(1:32); %The lower limits are the first 32 (of 33)
ANGLES_O2(:,5) = C_all(2:33); %The upper limits are the last 32 (of 33)
ANGLES_O2(:,6) = sqrt(ANGLES_O2(:,4).*ANGLES_O2(:,5)); %Midpoints.
ANGLES_H2O = ANGLES_O2./1.33; %Create angles in water using the refractive
index of water