Technology Of Radar Echo Signal Transmission And Display Based On FC-AE-ASM Protocal

There are many kinds of airborne data buses,of which the military application is more extensive than the MIL-STD-1553 B bus protocol.1553 B is the information transmission bus standard.The bus protocol is characterized by good real-time performance and high bus efficiency.However,the data transmission rate of this bus is only 1Mbps.With the increasingly higher data processing requirements of avionics systems,the transmission rate will be higher.The 1553 B transmission rate will slowly become a constraint factor for the development of avionics systems.But the FC bus protocol has the features of high-speed transmission,high reliability,low delay,etc.The FC-AE protocol extended from the FC protocol is mainly used in the avionics environment.Therefore it is necessary to apply the FC-AE protocol bus to the airborne system.This paper is a preliminary system simulation of FC bus transmission and display of key message signals(such as radar,video,and flight parameter messages)in airborne fighter aircrafts.It simulates the application of FC bus in avionics system platform which provides technical support and teaching materials for follow-up scientific research.Besides it has certain engineering practical values.The main work of this thesis are as follows:1.Introducing common airborne data buses and making corresponding comparative analysis.The basic framework of this paper is the application simulation of FC-AE protocol specification in airborne data bus.2.Explaining the constitution and the designing each module of the simulation platform system.Particularly the encapsulation of data is optimized through the comparison of storage formats.To reduce the exposure of underlying driver information and to provide a uniform interface to the changing upper layer software,this thesis designs the API layer which is encapsulated the function of the sending,receiving,and displaying data and so on.To do that is for the subsequent development and maintenances.The system data receiver continuously polls for the arrival of the new receiving descriptor through the receiving thread technology and implements operations such as reading and processing the received data.3.To achieve the upper application displaying interface,including: simulation of data generation,receiving,displaying and status displayed during transmission.The status displayed includes: connection and disconnection of links,the frame rate of transmission,statistics of frames,and so on.4.Performing functional tests on the bus system platform and analyzing the results.