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Navigation systems have vital importance both in military and civil applications. But, the error associated with these systems reduces the efficiency of the system. Kalman filter is a tool that is commonly used to decrease these errors. Recently, the modified wave estimator (MWE) has been proposed as an alternative to Kalman filter for navigation systems. Unlike Kalman filter, the MWE defines the process noise as deterministic means. Both estimators have advantages and disadvantages withdoi:10.1501/commua1-2_0000000024 fatcat:rtpaicgjcbavjkiwqbuqmf6aqa