Armageddon 2419 AD by Philip Francis Nowlan

In Armageddon - 2419 A.D., Buck, a victim of accidental suspended animation, awakens five hundred years later to discover America groaning under the tyranny of the villainous Han, ruling from the safety of their armored machine-cities. Falling in love with one of America's new warrior-women, Wilma Deering, Rogers soon become a central figure in using newly-developed scientific weapons - disintegrators, jumping belts, inertron, and paralysis rays - to revolt against the Han.