Dependability of Multichannel Communication System with Maintenance Operations for Air Traffic Management

Abstract

Air Traffic Management (ATM) systems are one of the key element of critical for flight safety infrastructure. Among ATM systems communications play a special role as a vital part in information exchange between air traffic controllers and pilots, especially in hazardous situations. In the modern ATM systems each controller has independent direct communication channel with separate radio frequency. For reliability increasing of such ATM communication channels the redundancy with common set of standby radio stations is used. Traditionally, maintenance is additional tool to increase the efficiency of radio stations operation. This paper examines the effectiveness of the ATM communication channels with the simultaneous using both of the above methods—redundancy and periodic maintenance of radio stations. Mathematical model of the channel reliability for this case is developed.