1. Faculty of Engineering and ScienceUniversity of AgderN‐4898GrimstadNorway
2. University of Picardie Jules Verne, Laboratory of Modeling, Information & SystemsAmiensFrance
3. School of Electrical and Electronic Engineering, The University of AdelaideSA5005Australia
4. College of Engineering and Science, Victoria UniversityMelbourneVic8001Australia
5. Space Control and Inertial Technology Research Center, Harbin Institute of TechnologyHarbinP.R. China