What factor contributes to the best accuracy in RAIM functions?

The best accuracy in RAIM (Receiver Autonomous Integrity Monitoring) functions is achieved through both the spacing between satellites and the angles at which they are positioned relative to the aircraft receiver.

When satellites are well-spaced, it provides a broader geometric distribution, which enhances the accuracy of the position solution derived by the receiver. This spread allows for better triangulation and minimizes the effects of any single satellite's error.

In addition to spacing, the angles between the satellites and the aircraft receiver are crucial. If satellites are positioned at favorable angles, it ensures that the signals received are less likely to be corrupted by multipath effects and atmospheric disturbances. A good angular configuration contributes to a more reliable solution by reducing the level of correlation between satellite measurements.

Together, the combination of optimal spacing and favorable angles maximizes the accuracy and reliability of the RAIM functions, allowing the system to effectively identify and mitigate errors from the satellite signals. Thus, both elements are essential for achieving the best performance in RAIM applications.