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Minor changes in matlab acquisition grid plot script

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This commit is contained in:
Antonio Ramos 2018-01-24 11:17:33 +01:00
parent 2153e24169
commit 2e2c3474be
1 changed files with 14 additions and 4 deletions
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18
src/utils/matlab/plot_acq_grid.m
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@ -31,7 +31,7 @@
% */
%%%%%%%%% ¡¡¡ CONFIGURE !!! %%%%%%%%%%%%%
sat = 27;
sat = 30;
n_chips = 1023;
system = 'G'; % GPS = 'G', Galileo = 'E'
%%% True for light grid representation
@ -40,23 +40,33 @@ lite_view = true;
n_samples_per_chip = 4;
path='/home/aramos/signals/';
path='/home/aramos/signals/GNSS-IN-THE-SPACE/CAPTURES SPIRENT/acq/';
file=['acq_' system '_sat_' num2str(sat) '.mat'];
load([path file]);
[n_fft n_dop_bins] = size(grid);
[d_max f_max] = find(grid == max(max(grid)));
freq = (0 : n_dop_bins - 1) * doppler_step - doppler_max;
delay = (0 : n_fft - 1) / n_fft * n_chips;
figure(1)
if(lite_view == false)
mesh(freq, delay, grid)
surf(freq, delay, grid)
else
delay_interp = (0 : n_samples_per_chip * n_chips - 1) / n_samples_per_chip;
grid_interp = spline(delay, grid', delay_interp)';
mesh(freq, delay_interp, grid_interp)
surf(freq, delay_interp, grid_interp)
end
xlabel('Doppler shift / Hz')
ylabel('Code delay / chips')
zlabel('Test statistics')
figure(2)
subplot(2,1,1)
plot(freq, grid(d_max, :))
xlabel('Doppler shift / Hz')
ylabel('Test statistics (fixed delay)')
subplot(2,1,2)
plot(delay, grid(:, f_max))
xlabel('Code delay / chips')
ylabel('Test statistics (fixed Doppler shift)')