function [req_bw] = rngres2bw(rng_res, rb, c0)

% Objective : Converting range resolution to required 3-dB bandwidth needed to distinguish two targets separated by the range specified in r [m]

if isempty(c0)
    c0 = physconst('LightSpeed');
end

req_bw = (c0 * rb) ./ (2*rng_res);

end