calculation of distances for a FMCW Radar

"""
Calculation of the distances for a FMCW Radar

http://radartutorial.de/02.basics/Frequency%20Modulated%20Continuous%20Wave%20Radar.en.html

R = (c0 · |Δf|) / (2 · (df/dt))


Condition
=========
A chirp has the length of the window_size
"""

def radar_range(sampling_rate, bandwidth, window_size):
    delta_t = 1 / sampling_rate * window_size
    chirp = bandwidth / delta_t
    dist = lambda fB: (3e8 * fB) / (2 * chirp)
    return [round(dist(sampling_rate / window_size * n), 2) for n in range(window_size // 2 + 1)]


def radar_range_simple(bandwidth, window_size):
    dist_step = 3e8 / bandwidth / 2
    return [round(dist_step * n, 2) for n in range(window_size // 2 + 1)]

low_sampling_rate  = 122_880    # S/s
high_sampling_rate = 2_000_000  # S/s
window_size        = 64         # Samples
bandwidth          = 180e6      # MHz

dists1 = radar_range(low_sampling_rate, bandwidth, window_size)
dists2 = radar_range(high_sampling_rate, bandwidth, window_size)
dists3 = radar_range_simple(bandwidth, window_size)

if dists1 == dists2 == dists3:
    print('Both functions returns equal distances')


# Conclusion: The sampling_rate does not affect the resolution.
# The higher the sampling rate, the shorter the chirp, the higher the beat frequency for same distance

# I hope I got everything right