RTD-Vector

Geodetics offers two vector products:

Free Vector for absolute heading and attitude determination

Fixed Vector for autonomous heading and attitude determination, coupled with precise Epoch-by-Epoch®relative positioning

Utilizing three GPS receivers, these products can be used to solve for attitude (e.g. yaw, pitch, roll) in real-time.

Free Vector applications include airborne and marine navigation, and buoy attitude determination.

Fixed Vector applications include precise approach and landing systems (aircraft, harbor navigation) and automated highways.

Characteristics of Vector Stations

Multiple antennas (usually 2-3) coupled to a rigid structure
May be static or moving (translating, rotating)
May have a dedicated local computer system
Can be used for attitude determination
Can serve as a Vector Reference Station

Attitude Determination

Determines attitude of any rigid structure to which it is attached
Completely autonomous - no external reference is needed
Angular precision depends on antenna spacing
Given 2.5 meter spacing, precision ~ 0.01 degrees
Complements inertial guidance systems in that there are no long term drifts
Vector arrangement can also generate a self-correcting virtual station for positioning relative to external systems
Relative orientation of two vector stations can be found

Attitude determination applications include correcting for angular deflections of a platform engaged in sonar sounding, radar imaging, optical imaging, pointing, docking, etc.