tell me the code for how to place scatterrers in a cylindrical volume?

place different scatterrers in a cylindrical volume

[Walter Roberson]

Please expand on the question. What is a scatterrer ?

[vinod kumar govindu]

scatterrer is a particular point with x,y,z coordinates in a space it deflects a ray or signal from a straight path. so i have to place these scatterrer point in a cylindrical voolume in space. tell me the code to place this scatterrer point in that cylindrical volume?

[Walter Roberson]

What properties does a scatterrer have? Does it just have a location? Does it have an orientation? Does it have a size? If it does have a size, then is it important that the item not project outside of the cylinder ?

[vinod kumar govindu]

we are doing it by considering the position of the scatterer only. It doesn't have any size

[vinod kumar govindu]

and also we have place 10 number of scatterer randomly in that cylindrical volume

[Walter Roberson]

Then my code below is a solution. You do not need to plot the X Y Z points if you do not want to. Adjust the radius and height parameters according to your needs. N is the number of points to generate. The K'th scatterrer is located at (X(K), Y(K), Z(K))

[vinod kumar govindu]

is this the way to create cylindrical volume?

X=[-1,1];
Y=[-1,1];
Z=[30,34];
cylinder=[X,Y,Z];
r=input('enter tha value of range gate=');
deltar=[r-2,r+2];
N=input('enter the value of number of scatterrers=');
s=rand(N,1);

if it is wrong help me how to create that ?

Answer 1

[Walter Roberson]

radius = 5;
height = 18;
N = 1000;
r = sqrt(rand(1,N)) * radius;
th = rand(1,N) * 2 * pi;
h = rand(1,N) * height;
[X, Y, Z] = pol2cart(th, r, h);
scatter3(X, Y, Z)

[Walter Roberson]

Xbounds = [-1,1];
Ybounds = [-1,1];
Zbounds = [30,34];

N = input('enter the value of number of scatterrers=');

Xr = (Xbounds(2) - Xbounds(1))/2;
Yr = (Ybounds(2) - Ybounds(1))/2;
Xc = (Xbounds(2) + Xbounds(1))/2;
Yc = (Ybounds(2) + Ybounds(1))/2;

height = Zbounds(2) - Zbounds(1);
radius = min(Xr, Yr);

R = sqrt(rand(N,1)) * radius;
th = rand(N,1) * 2 * pi;
h = rand(N,1) * height;
[X, Y, Z] = pol2cart(th, R, h);
scatterrers = [X + Xc, Y + Yc, Z + Zbounds(1)];

scatter3(scatterrers(:,1), scatterrers(:,2), scatterrers(:,3))

%I have no idea what the below has to do with the rest of the problem

r = input('enter the value of range gate=');
deltar =[r-2, r+2];

[vinod kumar govindu]

thanks roberson.

i am trying on one coding since last week i am not getting time series response properly. I will explain my project crearly will you please provide code for that if possible?

[Walter Roberson]

Backscatter and radar is not a topic I know anything about.