Data link system on basis of IMA (integrated modular avionics) architectures

The invention discloses a data link system on the basis of IMA (integrated modular avionics) architectures. The data link system comprises a display, an IMA case, a remote data interface unit and radio stations. The display is used for providing human-machine interfaces for data link application; the data link application and air-ground communication protocol stacks reside in the IMA case; the remote data interface unit is used for communication between the IMA case and the radio stations and converting AFDX (avionics full-duplex switched Ethernet) data and ARINC429 (aeronautical radio incorporation 429) data; the radio stations are used for receiving control instructions from the data link application and executing corresponding operation, are further used for receiving downlink messagesfrom data link protocol stacks and issuing the downlink messages to the ground and are also used for receiving uplink messages transmitted by the ground and transmitting the uplink messages to the data link protocol stacks. T