Multiconstellation GNSS/INS to Support LPV200 Approaches and Autolanding

摘要

Future evolution of the Global Navigation SatelliteSystem (GNSS) scenario is expected to significantlyimprove the performance of GNSS based navigationsystems, in particular accuracy and integrity. However,these systems will still be vulnerable to different threatslike interference, jamming, or scintillation, which directlyaffect the continuity of service. One effective way tomitigate these threats is to integrate GNSS with an InertialNavigation System (INS). Under the event of a failure ahybrid navigation system limits the degradation of theperformance increasing the chances to complete thetargeted procedure, especially for procedures that requirerelatively short time for completion. For this reason theusage of GNSS/INS integrated systems to supportapproach and landing operations is of particular interest.This paper studies the benefits of integrating future GNSSnavigation systems with different grade of inertialmeasurement units (IMUs) to improve continuity forLPV200 approaches and autolanding (it is expected thatfuture multiconstellation GNSS scenario may provideenough performance to support these procedures). Theperformance of the hybrid navigation system is evaluatedunder different failure scenarios and with respect todifferent grades of IMUs and compared with theequivalent performance provided by a standalone GNSSreceiver.