Web-Based and Traditional Classroom Lesson Design Guide

This Phase I study proposes to address the high cost of navigation systems suitable for guidance of gun-launched projectiles. The basic approach to reducing cost is to adapt for this purpose components which are under high rate production for thecommercial market. Especially in the case of integrated electronic circuits and microfabricated mechanical devices, high production rate equates to low cost. We propose a navigation system which integrates the functions of an inertial navigation system,a GPS receiver and anti-jam antenna control. The INS is based on hardened versions of MEMS accelerometers and gyros which were designed for the large market in the automotive industry. The modest performance capability of these instruments isaccommodated by strong aiding with GPS data. GPS receivers have been manufactured in large quantity for some time, and gun-hard versions have already been demonstrated. The addition of anti-jam signal processing gives the GPS receiver an additionalmargin of protection against both intentional and unintentional interference. This function is implemented in digital signal processing electronics, and when reduced to ASIC form can be produced at low cost.There is a clear need to improve the accuracy oflong range projectiles through active guidance. There is at present no navigaiton capability suitable for this purpose which can be acquired at acceptable cost. This study proposes to integrate a set of components whose costs have been reduced due toCOTS applications which will provide the required capability