bw = range2bw(r) returns
the bandwidth needed to distinguish two targets separated by a given
range. Such capability is often referred to as range resolution.
The propagation is assumed to be two-way, as in a monostatic radar
system.

bw = range2bw(r,c) specifies
the signal propagation speed.

Assume you have a monostatic radar system that
uses a rectangular waveform. Calculate the required pulse width of
the waveform so that the system can achieve a range resolution of
10 m.

This function assumes two-way propagation. For one-way
propagation, you can find the required bandwidth by multiplying the
output of this function by 2.