Abstract:

The current air traffic management system is still relying on voice communication between pilots and controllers to know the aircraft intent information. But there is some instability and ambiguity in the voice communication and a flight safety hazard to a large extent. Aiming at the existing unity and specification problem of aircraft intent research,the way of computer form language grammar is utilized to define and generate the grammar of AIDL. According to the AIDL grammar rules of vocabulary and sentence,the effective way of sentence combination has been realized and the derivation and reduction of AIDL sentence is achieved based on linear grammar. The AIDL sentences are identified by DFA(deterministic finite automata). Therefore,the aircraft intent information is automatically generated corresponding to AIDL sentence,the description of aircraft intent information is standardized and a new method of communication between controllers and pilots is brought up,as a result,the access of aircraft intent information accuracy and timeliness is improved and the possibility of incorrect comprehension of voice communication transmission error is reduced.

Key words: aircraft intent description language, deterministic finite automata, AIDL grammar