Define a chirp signal and explain how it is used for range estimation. What is the main factor in a chirp signal that impacts range resolution? What is the main factor in a chirp signal that impacts the maximum measurable range distance?

Explain the strain-hardening phenomenon on the basis of dislocation - dislocation strain field interactions. also, briefly describe what generally happens to the ductility of a metal that has been strain hardened (i.e. does strain hardening make a metal more ductile or