In this paper

the problem of frequency estimation of two-dimensional (2-D) harmonics in the presence of correlative multiplicative and additive noise is presented.We propose a 2-D cyclic statistic-based approach to this problem

and 2-D cyclic mean is employed to estimate frequency in nonzero mean multiplicative noise.A special 2-D slice of the sixth-order time-average moment spectrum is defined to estimate frequency in zero mean multiplicative and additive noise.The effectiveness of our methods is demonstrated through some simulation examples.