Resource

 

The Navigation Equations: Computing Position North, East, and Down

The Navigation Equations: Computing Position North, East, and Down
Christopher Lum
52 min
Intermediate
Video
Theory

In this video we show how to compute the inertial velocity of a rigid body in the vehicle-carried North, East, Down (NED) frame. This is achieved by rotating the velocity expressed in the body frame through the Euler rotation sequence using the direction cosine matrix (DCM). This allows us to compute the position North, East, and down of the vehicle which is useful for navigation or other applications (such as determining the altitude of the vehicle which can in turn be used to more accurately model air density).

 

 

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