26 June 1997 Concept for creating in- and preflight databases
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Abstract
In synthetic vision systems (SVS) environmental data and mission critical information must be provided to pilots and system components. For systems with demanding visual graphics representations or enhanced ground proximity warning systems (EGPWS), databases offer data in high resolution with distinct features. Investigations show that pre- and in-flight services and systems such as Aeronautical Publications (AIP), flight planning, map creation, FMS, flight displays, or EGPWS are all based on dependent data from few sources. They are usually terrain, cultural, flight related, weather, or NOTAMS based. Our concept proposes a single relational high quality database (HQ-DB) for all of the above described applications. It allows to store worldwide information in an appropriate resolution with a verified quality. Obviously such a HQ-DB will not be carried in an aircraft. The amount of data is too enormous and geographical information system storage formats do not allow real-time extraction of data. Therefore, for every application a separate real-time on board database (RTO-DB) is derived from the HQ-DB. In the off-line RTO-DB creation process, data is converted in a real-time capable graphics data format formed by tiles with integrated level of detail and geometric representations of synthetic objects. During a mission, the database server integrates pilot inputs and changes via data link. Manual inputs changing the appearance of primary flight displays can also directly influence the RTO-DB. The resulting data is sent to the application using this data. In our system this database concept is used for generic flight guidance displays, for a simulator visual display system, and for a general algorithmic flight hazard warning system.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jens Schiefele, Ludwig May, Helmut Raabe, "Concept for creating in- and preflight databases", Proc. SPIE 3088, Enhanced and Synthetic Vision 1997, (26 June 1997); doi: 10.1117/12.277227; https://doi.org/10.1117/12.277227
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