The process
describes a sinusoidal process that is corrupted by an additive white-noise process W(t) of known power spectral density N0/2. The phase of the sinusoidal process, denoted by , is a uniformly distributed random variable, defined by
The amplitude A and frequency f0 are both constant but unknown.
a. Determine the autocorrelation function of the process X(t) and its power spectral density.
b. How would you use the two results of part a to measure the unknown parameters A and f0?