looking through my POH I noticed that in the LR60 collins pro line 4 the IAPS or integrated avionics processor system, basically some sort of solide state component that carries out most of the integration of the data fed from different sources such as the FMS, the ADC, the AHRS, and other NAV sources, before they are forwarded to the PFD and the MFD, uses for integration a kalman filter. What is exactly a kalman filter? is it software or hardware and what is its purpose?
Another quick question, flying through the sky I noticed that on the MFD when the MAP format is selected there are no curved lines even if there is a holding pattern along the procedure or a DME arc. Is that due to the fact that the Collins Pro line 4 is coupled to a Universal FMS, as matter of fact the FMS CDU is coupled to an ERP or EFIS Radar panel, and if so in an airplane that uses the avionics package and the FMS of the same brand, are curved lines depicted?
Thanks and best luck to you'll.