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
- 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.