Illgen Simulation Technologies, Inc. (ISTI) proposes a computer-aided engineering (CAE) tool that directly supports the development and validation of Global Positioning System (GPS)-based approaches to space-based guidance, navigation, and control (GN&C). Model innovation includes the application of Wide Area Augmentation System (WAAS) signals to space-based GN&C and the development of space-based receiver and accelerometer simulations. ISTI proposes to enhance its current simulation (iWAASs) of the Federal Aviation Administration's (FAA) Wide Area Augmentation System (WAAS) to include: 1. Development and demonstration of prototype WAAS messages, 2. Development and demonstration of a space-based WAAS/GPS receiver model for determination of platform dynamics and orientation.Together with the current capabilities of iWAASs, these added features will address the key risk areas in the development of an integrated computer-aided engineering (CAE) tool for the modeling and assessment of Global Positioning System (GPS) based guidance, navigation, and control (GN&C) processes for satellites in the Mission to Planet Earth program or other space platforms.
