The following code is used to plot the range azimuth heatmap. Why is the magnitude raised to the power 0.2? Should this not be 20*log10(magnitude)? The code is in the file: "4chip_cascade_TxBF\PostProc\Plot_advFraConfig_TXBF_rangeAzimuth_stich.m"
subplot(2,2,4);surf(y_axis, x_axis, abs(range_angle_stich).^0.2,'EdgeColor','none');
The figure below compares the log scale to raising to 0.4 which is done for MIMO. I previously noticed that the scaling by a fractional power looks better than converting to dB, though I would like to know how this power is chosen and what the y axis values actually mean. Could you please clear this up. My understanding is that the scaling by a fractional power is used to bring the sidelobes and mainlobes closer for visual analysis but not as much as the log scale so that the SNR/targets appear more prominent.
