Howtosignalprocessing
What is range FFT?
The frequency range of an FFT result depends on the sample rate frequency at which the input data points were evenly sampled. The FFT results are then data points in the frequency domain spaced at the sample rate frequency divided by the FFT length, from 0 or DC up to half the sample rate.
What is Doppler FFT?
FFT Plot (Range-Doppler Plot): The FFT is used to convert radar time domain data to frequency domain. Detected objects and their Doppler signature are plotted in an FFT Plot. The x-axis represents the Doppler Frequency (which can be converted to Doppler Speed), and the y-axis is range.
What is range Doppler?
If a transmitter platform is stationary, a range-Doppler map shows a response from stationary targets at zero Doppler. For targets that are moving relative to the transmitter platform, the range-Doppler map shows a response at nonzero Doppler values.
What is 1D FFT and 2D FFT?
Just look at the math for 1D vs 2D FFT. In the 1D case, there is only 1 independent variable (x[n]). In 2D, there are two. It doesn't make sense to apply a 2D signal (i.e. two independent variables such as rows&columns in your image example) to a function that only takes one independent variable.
