Ergodic estimators of double exponential Ornstein-Uhlenbeck processes

The goal of this paper is to construct ergodic estimators for double exponential Ornstein- Uhlenbeck process, where the process is observed at discrete time instants with time step size h. We show the existence and uniqueness of the function equations to determine the estimators for fixed time step size h. Also, we show the strong consistency and the asymptotic normality of the estimators. Furthermore, we propose a simulation method of the double exponential Ornstein-Uhlenbeck process and perform some numerical simulations to demonstrate the effectiveness of the proposed estimators.& COPY; 2023 Elsevier B.V. All rights reserved.