I want to measure amplitude of a sine wave input precisely with a limited resolution ADC.

As an example suppose that I have 1MHz pure sine wave input to the 320Msps 10-bit ADC. I beleived there is many redundancy in data and with some signal processing I could get more Precision than 10-bit.

Is there any way that I can do this without any change in circuit, like adding noise or other hardware change?