Plot the range-Doppler response. imagesc(dop_grid,rng_grid,mag2db(abs(resp))); xlabel('Speed (m/s)'); ylabel('Range (m)'); title('Range-Doppler Map'); Compute the range-Doppler response of an FMCW signal using a
This MATLAB function returns the range offset due to the Doppler shift in a linear frequency modulated signal.
Calculate and plot the clutter radar cross-section with no Doppler wrapping. The clutter return up to 2.5 km has about 1.3 kHz of bandwidth, and is skewed towards positive Doppler, as expected given the 20∘ dive angle. Get [rcs,dop] = clutterSurfaceRangeDopplerRCS(nrcs,rangeBinCenters,...
Plot the range-angle image of the SNR values in the range, Doppler, and beamformed datacube and overlay the image with the signal-level detections extracted from the datacube. axRgAz = helperPlotRangeAzimuthDetections(bep,Xbmfrngdop,estnoiselvldB,threshdB,xcvrLRR,azgrid,rggrid,dets); Compare...
A % range-Doppler map is generated and a Neyman-Pearson (NP) decision rule is % used to achieve the desired Pfa. nf = 0; % Noise figure fast_time = 0:1/fs:1/prf-1/fs; % Fast time grid range_gates = physconst('LightSpeed')*fast_time/2; % Range gates pulses = ...
To estimate the range and speed of three targets, create a range-Doppler map using the phased.RangeDopplerResponse System object™. Then use the phased.RangeEstimator and phased.DopplerEstimator System objects to estimate range and speed. The transmitter and receiver are collocated isotropic antenna...
What specific measured input data is needed to generate a Range Doppler Map using phased.RangeDopplerResponse command?It uses simulated I/Q data but covers viewing the raw I/Q signals and then processing it for creating a range-doppler map using ...
1) What could be causing the periodic doppler? This is most notable in longer range waveforms (>10m maximum range). 2) There is constructive and destructive interference in the range FFT, most observable in the range-azimuth plot as alternating concentric rings and i...
Because this object performs no Doppler processing, you can use the object to process noncoherent radar pulses. The output of the range response object is also a data cube with the same number of dimensions as the input. Its first dimension contains range-processed data but its length can ...
The linewidth is dominated by the Doppler broadening at the gas pressures of all measurement runs. The pressure-broadening contribution, calculated based on the HITRAN parameters, varies between ∼0.2 MHz FWHM at 0.04 mbar and ∼2.1 MHz FWHM at 0.49 mbar. However, the average and the standar...