Navigation Coordinate System
摘要
Why does navigation study coordinate systems? We know that describing object motion is relative to a certain reference frame. The task of the navigation system is to determine the motion parameters of the carrier, that is, to determine the series of navigation parameters such as the carrier position, speed, attitude and its change rate in a certain coordinate system. In other words, the navigation system itself is a reference coordinate system for the carrier, which is often known as the spatiotemporal reference. Therefore, when studying the navigation problem, it comes first to determine the coordinate system, which is not only the mathematical basis for defining navigation parameters and navigation solutions but also the basic problem of all navigation technologies and navigation systems. It is very important to describe navigation parameters and solve navigation problems. This chapter will highlight the relevant knowledge about the navigation coordinate system.