ATPL: In relation to the NAVSTAR/GPS satellite navigation system, what is involved in the differential technique (D-GPS)?
Domanda 335, Radio Navigation - ATPL - Airline Transport Pilot license
| Receivers from various manufacturers are operated in parallel to reduce the characteristic receiver noise error |
| The difference between signals transmitted on the L1 and L2 frequencies are processed by the receiver to determine an error correction |
| Signals from satellites are received by 2 different antennas which are located a fixed distance apart. This enables a suitable receiver on the aircraft to recognise and correct for multipath errors |
| Monitor the orbital planes of the satellites |
