In order for a current satellite-based navigation system (such as the Global Positioning System, GPS) to meet integrity requirements, there must be a way of detecting erroneous measurements, without help from outside the system. This process is called Fault Detection and Isolation (FDI). Fault detection requires at least one redundant measurement, and can be done with a parity space algorithm. The best way around the fault isolation problem is not necessarily isolating the bad measurement, but finding a new combination of measurements which excludes it.
In NASA. Langley Research Center
- Pub Date:
- February 1994
- Fault Detection;
- Global Positioning System;
- Multisensor Applications;
- Quality Assurance and Reliability