Design of the Geophysical Airborne Survey System: A Distributed MicroprocessorApplication

摘要

This paper discusses the design of the Geophysical Airborne Survey System (GASS).GASS was developed by the Naval Oceanographic and Atmospheric Research Laboratory (NOARL) and is a real-time, distributed microprocessor sensor system. The Naval Oceanographic Office (NAVOCEANO) intends to use this system on the Project Magnet P-3 Orion aircraft to collect worldwide magnetic and hydrographic data. The paper begins with a brief discussion of the mission and history of GASS. Then, a review is given of the advances made during the last decade in the area of real-time distributed microprocessor systems. Following the review, a description of the GASS design is offered. The final GASS design has eight Motorola MC68020 based network. Six of these nodes interconnected by a MIL STD-1553B based network. Six of these nodes are used for sensor interfacing. The other two nodes are used for operator interfacing, data recording, and data processing.