In the context of an Airborne-Based Augmentation System (ABAS), which method uses information from GNSS and additional sensors for integrity monitoring?

The correct method that uses information from GNSS and additional sensors for integrity monitoring is Aircraft Autonomous Integrity Monitoring (AAIM). AAIM performs integrity checking by integrating additional data beyond the primary GNSS signals, incorporating sensor inputs that can enhance the reliability of the positioning information. This allows for improved safety and confidence in navigation by ensuring that any discrepancies or potential errors in the GNSS data are detected and addressed through cross-referencing with other sensors aboard the aircraft.

This method is particularly beneficial in situations where GNSS signals may be compromised or less reliable due to various external factors. By utilizing multiple sensor data sources, AAIM can provide a more robust assessment of navigation integrity compared to relying solely on GNSS data.

Understanding the framework of integrity monitoring systems helps appreciate the advancements in aviation safety and navigation reliability, especially in critical flight operations.