delay and sum beamforming

I am making a program to acheive delay and sum beamforming,

I looked for examples of this online and found one relatable. The code is given below. When i run the program i get this error

%% Examples on delay-and-sum response for different arrays and input signals


%% 1D-array case

% Create vectors of x- and y-coordinates of microphone positions 
xPos = -0.8:0.2:0.8; % 1xP vector of x-positions [m]
yPos = zeros(1, numel(xPos)); % 1xP vector of y-positions [m]
zPos = zeros(1, numel(xPos));
elementWeights = ones(1, numel(xPos))/numel(xPos); % 1xP vector of weightings

% Define arriving angles and frequency of input signals
thetaArrivalAngles = [-30 10]; % degrees
phiArrivalAngles = [0 0]; % degrees
f = 800; % [Hz]
c = 340; % [m/s]
fs = 44.1e3; % [Hz]

% Define array scanning angles (1D, so phi = 0)
thetaScanAngles = -90:0.1:90; % degrees
phiScanAngles = 0; % degrees


% Create input signal
inputSignal = createSignal(xPos, yPos, zPos, f, c, fs, thetaArrivalAngles, phiArrivalAngles);

% Create steering vector/matrix
e = steeringVector(xPos, yPos, zPos, f, c, thetaScanAngles, phiScanAngles);

% Create cross spectral matrix
R = crossSpectralMatrix(inputSignal);

% Calculate delay-and-sum steered response
S = steeredResponseDelayAndSum(R, e, elementWeights);

%Normalise spectrum
spectrumNormalized = abs(S)/max(abs(S));

%Convert to decibel
spectrumLog = 10*log10(spectrumNormalized);


%Plot array
fig1 = figure;
fig1.Color = 'w';
ax = axes('Parent', fig1);
scatter(ax, xPos, yPos, 20, 'filled')
axis(ax, 'square')
ax.XLim = [-1 1];
ax.YLim = [-1 1];
grid(ax, 'on')
title(ax, 'Microphone positions')

%Plot steered response with indicator lines
fig2 = figure;
fig2.Color = 'w';
ax = axes('Parent', fig2);
plot(ax, thetaScanAngles, spectrumLog)
grid(ax, 'on')
ax.XLim = [thetaScanAngles(1) thetaScanAngles(end)];

for j=1:numel(thetaArrivalAngles)
    indx = find(thetaScanAngles >= thetaArrivalAngles(j), 1);
    line(ax, [thetaScanAngles(indx) thetaScanAngles(indx)], ax.YLim,'LineWidth', 1, 'Color', 'r', 'LineStyle', '--');
end
xlabel(ax, '\theta')
ylabel(ax, 'dB')

[KALYAN ACHARJYA]

Function file createSignal??

[Dhananjay Singh]

function signalTotal = createSignal(xPos, yPos, zPos, f, c, fs, thetaArrivalAngles, phiArrivalAngles, amplitudes, nSamples, coherence)
%createSignal - create input signal to an array of microphones
%
%Creates the input signal to an array of microphones based on the position
%in space of the microphones and the arrival angle and amplitude of the individual sources

%signalTotal = createSignal(xPos, yPos, zPos, f, c, fs, thetaArrivalAngles, phiArrivalAngles, amplitudes, nSamples, coherence)

%IN
%xPos               - 1xP vector of x-positions [m]
%yPos               - 1xP vector of y-positions [m]
%zPos               - 1xP vector of z-positions [m]
%f                  - Wave frequency [Hz]
%c                  - Speed of sound in [m/s]
%fs                 - Sampling frequency in [Hz]
%thetaArrivalAngles - 1xM vector of theta arrival angles for sources
%phiArrivalAngles   - 1xM vector of phi arrival angles for sources
%amplitudes         - 1xM vector of amplitudes of sources
%nSamples           - Number of samples to be used in the calculations
%coherence          - Boolean to make input signals coherent or not
%
%OUT
%signalTotal        - PxN matrix of input signal to individual sensors

if ~exist('coherence', 'var')
    coherence = false;
    rng('default')
end

if ~exist('nSamples', 'var')
    nSamples = 1e3;
end

if ~exist('amplitudes', 'var')
    amplitudes = zeros(1,numel(xPos));
end

if ~isvector(xPos)
    error('X-positions of array elements must be a 1xP vector where P is number of elements')
end

if ~isvector(yPos)
    error('Y-positions of array elements must be a 1xP vector where P is number of elements')
end

if ~isvector(zPos)
    error('Z-positions of array elements must be a 1xP vector where P is number of elements')
end


T = nSamples/fs;
t = 0:1/fs:T-1/fs;

signalTotal = 0;
for k = 1:numel(thetaArrivalAngles)

    %Create signal hitting the array
    doa = squeeze(steeringVector(xPos, yPos, zPos, f, c, thetaArrivalAngles(k), phiArrivalAngles(k)));
        
    %Add random phase to make signals incoherent
    if coherence
        signal = 10^(amplitudes(k)/20)*doa*exp(1j*2*pi*f*t);
    else
        signal = 10^(amplitudes(k)/20)*doa*exp(1j*2*pi*(f*t+randn(1, nSamples)));
    end
    
    %Total signal equals sum of individual signals
    signalTotal = signalTotal + signal;
      
end

[Sazid Hasan]

Is that problem solved?

[JITENDRA]

sir

i am phD student,i need your help to solve my problem how i can create image by using Delay and Sum algoritm for breast cancer detection by using Microstrip patch antenna in MATLAB code

[JITENDRA]

by usinf IFFT method

[prabhat kumar sharma]

please share the error encountered.

• Check Error Messages: Carefully read any error messages MATLAB provides. They often indicate which part of the code is causing the issue.
• Step Through Code: Use the MATLAB debugger to step through your code line by line to identify where it fails.
• Validate Inputs: Print or check the dimensions and types of your variables before they are used in functions.

By ensuring all functions are correctly defined and inputs are properly validated, you should be able to resolve common errors in your beamforming implementation.