Guidance isn't just about drawing a straight line; it's about finding the most efficient path.
Navigation answers three simple questions: Where am I? How fast am I going? Which way am I pointing? It is the art and science of determining the vehicle's (position, velocity, and attitude) relative to a known reference frame.
The field of aerospace navigation and guidance represents the brain and nervous system of any flight vehicle, from a commercial airliner to an interplanetary probe. Understanding these systems requires a look at how vehicles determine their position (navigation) and how they plan a path to their destination (guidance). The Core Pillars: Navigation vs. Guidance vs. Control
: This asks "How do I get to the target?" Guidance systems calculate the desired trajectory from the current position to a destination, determining necessary changes in velocity or rotation to stay on path.
. Understanding these fundamentals is key for anyone entering the field of aerospace engineering. 1. Defining the GNC Framework
https://nptel.ac.in/courses/101/104/101104002.pdf