Final answer:
The feature on the DGNS that excludes faulty satellite signals is called Fault Detection and Exclusion (FDE). This method is used by DGNS receivers to identify and remove satellites transmitting faulty or corrupted signals. FDE helps improve the accuracy of GPS-derived positions by eliminating the influence of faulty satellite signals.
Step-by-step explanation:
The feature on the DGNS that excludes satellites if it finds their signal to be faulty is called Fault Detection and Exclusion (FDE). FDE is a method used by DGNS receivers to identify and remove satellites that are transmitting faulty or corrupted signals.
When a satellite signal is distorted or disrupted by a phenomena like a Coronal Mass Ejection (CME), the FDE algorithm in the DGNS receiver can detect the anomalies in the signal and exclude the affected satellite from the satellite constellation for positioning calculations.
This helps to improve the accuracy of GPS-derived positions by eliminating the influence of faulty signals from satellites. By excluding satellites with faulty signals, the DGNS can provide more reliable and accurate positioning for applications like aircraft navigation that require precise positioning within certain limits.