Abstract
Inertia/celestial/satellite navigation can provide high-precision, highly reliable position, velocity, and attitude information with strong autonomous ability, thus it is the most effective means of high-performance navigating for new generation aircraft. To achieve high accuracy navigation for vehicles, i.e., to determine the position, velocity and attitude information, we must first understand the motion information of the vehicles to which the reference coordinate system relates; meanwhile, for mastering the inertia/celestial/satellite navigation system technology, the basic principle and knowledge of inertial, satellite, and celestial navigation also need to be understood. For this reason, coordinate systems commonly used in navigation and Earth reference model will be briefly introduced first in the following paragraphs, and then, the working principle and error characteristics of inertial, satellite, and celestial navigation system (CNS) will be further described.
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