| 摘要 |
Disclosed are combinations of electronic navigation systems for aircraft landing approaches, enabling overall operating complexity (especially on the ground) of electronic aircraft guidance systems for precision approaches to be reduced significantly in relation to prior art and future GNSSS-assisted (Global Navigation Satellite Systems) approach methods, while at the same time increasing the number of regionally available systems in the case of failures of supraregional systems (e.g. GNSS). The aim of the invention is, leading on from the previous prevailing idea, to cover and meet all requirements with respect to flight guidance in the approach with the aid of essentially one system and to specially use optimised separate systems or system components for the final approach, making it no longer necessary to eradicate the weaknesses of an individual system (e.g. precision of altitude guidance and integrity problems with GNSS) by means of complex measures(e.g. GBAS for GNSS). According to the invention, the system combinations also diffuse problems related to integrity of the data base on board the aircraft occurring when area navigation systems (e.g.GNSS, LORAN-C) are used.
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