Real-Time Data Management in a UNIX Network Environment

摘要

The focus of this paper is on real-time shipboard data acquisition and managementin a network consisting of UNIX workstations and a dedicated real-time processor. Inputs include digitally telemetered data from a large acoustic receiving array, time code from a GOES satellite receiver, position from the ship's GPS/LORAN navigation system, and analog inputs from wind speed and direction sensors. The real-time system is based on VMEbus hardware and the VxWorks operating system. Data is archived on a pair of 4-mm digital audio tape recorders. A unique feature of the network environment is that selected segments of the data can be transmitted to a UNIX workstation for quick-look analysis as soon as it arrives rather than waiting for the end of a data tape. (author)