Application of cross-correlation in radar signal processing

Code:

clc

clear all

close all

n1=input('Enter the time sample range:');

x=input('Enter the sequence:');

d=input('Enter the required amount to delay:');

w=randn(1,length(n1));

y=x+w;

n2=n1+d;

r=xcorr(y,x);

n1=-fliplr(n1);

nl=min(n1)+min(n2);

nh=max(n1)+max(n2);

np=nl:1:nh;

stem(np,r);