DEVELOPMENT OF NETWORK DATA AGGREGATOR FOR PAYLOAD FILTERING TO CONTROL TELEMETRY BANDWIDTH

Abstract

Emerging aircraft avionics and vehicle management communication systems have switched to higher data rate networks such as Ethernet and Fibre Channel, requiring Flight Test systems that can acquire data information from these networks. The data has moved onto higher speed networks, but the telemetry bandwidth has not increased, therefore producing a need to selectively capture data from within a packet, down to the bit level, for telemetry without capturing the entire message. Ethernet and Fibre Channel are transport protocols without rigid payload structure definitions as seen with MIL-STD-1553 or ARINC-429. Avionics traffic can be defined in any manner including dynamic length components or repeating structures that are difficult to define generically. AIT (Avionics Interface Technologies) developed the Airborne Network Data Aggregator (ANDA) unit for The Boeing Company with six different payload structure filter types to generically capture data out of network structures.