COEDS: a CAAD tool for shipboard communication system engineering

The authors describe COEDS (communication engineering design system), a new CAAD (computer-aided analysis and design) tool developed for shipboard communication systems. COEDS aids in EMI (electromagnetic interference) analysis, system degradation prediction, and interference mitigation. COEDS tools are used to build block diagrams of communication systems, calculate power and frequency of cosite interference, predict the degree of performance, and evaluate alternative designs. The application of these tools is shown by an example of an HF system design and interference analysis. The example demonstrates the block diagram interface, automated program operation, generation of graphical output, and ease of use in changing the design to meet performance criteria