Design of Inertial Navigation System/Celestial Navigation System Navigation System for Horizontal Position Estimation and Performance Comparison Between Loosely and Tightly Coupled Approach

This paper describes a navigation system design for horizontal position estimation using inertial measurement sensors and celestial navigation. In space, stars are widely spread objects in the sphere have been used mainly to obtain attitude information through star observation. However, it is also possible about with altitude of star. It called which same principle that former navigators locate themselves while sailing on sea. particular, deep space where GPS not available, important location by making use relatively easy observe. Therefore, we introduce can estimate two types systems, loosely coupled tightly depending how measurements utilized. intended help future simulation studies only verify whether correctly estimates but comparing performance methods.