Functional Performance Specification for an

for an Inertial Navigation System Abstract: This document defines the functional and performance requirements for the inertial navigation system simulator that interfaces with the external com-puter system (ECS) simulator. Both the INS simulator and the ECS simulator are being developed in Ada by the Real-Time Embedded Systems Testbed Project at the Software Engineering Institute (SEI). The INS simulator is similar to a real-world INS, but has reduced functionality. This document provides specifications for the major functions of the INS simulator. 1