Abstract: | The development trend of foreign aeronautical telemetry technology in data sampling,data recording,data transmission is described in this paper.The contents include a distributed system architecture for airborne data acquisition,an open bus structure in data acquisition unit,the synchronous sampling of signals,digital signal processing,full software programming and automatic test,etc.It is pointed out that the airborne data recording is changing from analogue recording to digital recording,from pure recording to the integrity of data acquisition and recording,from pure tape recording to multi-media recording.The other features include the increased telemetry capacity,the compressed image transmission,new telemetry receiving antennas,and digitized equipments. |