How is Locata similar to GPS?
- Both GPS and Locata are one-way ranging systems with the following features:
- A small number of transmitters, providing good geometry, can serve an
unlimited number of receivers; - Location of the receiver is known only at the receiver; and
- The receiver’s position can then be fed into a host of diverse
applications such as machine control, asset management and military systems.
- A small number of transmitters, providing good geometry, can serve an
- Similar signal structure and the same measurements as GPS:
- Locata and GPS are both direct sequence spread spectrum signals;
- Receivers for both systems give pseudorange and carrier-phase measurements; and
- Both receivers can use the pseudorange or carrier phase for positioning:
- Pseudorange positioning for both is in the order of a meter
- Carrier phase positioning for both is in the order of 2-3 centimetres.
- From an end-user perspective, Locata is “just another constellation”.
- Dilution of Precision (DOP) matters, as with GPS.