Stretch Processing

(Richards 2022) Strech processing good for LFM waveforms. Compensates
for limitations of ADCs.

Stretch Processing is a method for implementing a Matched Filter for
wideband LFM.

Stretch processing is effective for a set range window determined by
design parameters.

Equation for return from a scatterer when LFM pulse is the transmit signal.

\begin{equation} y(t) = \rho{}*exp[j\pi{}\frac{\beta{}}{\tau}(t-t_{b})^{2}]exp[j\Omega_{t}(t-t_{b})], 0\le{}t-t_{t}\le\tau \end{equation}

nonlinear stretch processing