An approach for METAR report decode based on finite automata

Abstract

METAR report was decoded by computer. The undecoded reports may be lost or misinterpreted. In this paper we describe a new approach for METAR report decoding based on Finite automata and regular expression. Following an introduction of the METAR report, we describe the pattern for METAR report and discourse how to decode an error report appropriately enough. This approach has been applied to civil aviation meteorological project, and has 44 airports in the country running.