Sidewinder Missile Gps Receiver Tests

摘要

The use of Global Positioning System (GPS) receivers as a source to provide Time space and Position information (TSPI), and Miss Distance Indication (MDI) data in test and Evalaution (T&E) applications is being considered. Specifically, GPS receivers are being evalauted to determien their usefulness as a sensor in a Sidewinder missile telemetry system (AN/DKT-80). Initial testing has indicated that position information generated from a GPS receiver can provide significantly better position data than a radar tracking system when using Double Differential error correction techniques. This concept requires a GPS reference station to be located in the general proximity of the Telemetry data-receiving site. Software has been developed that will compare GPS data from the airborne telemetry system to the GPS reference station and display a real-time TSPI solution. This software will also provide MDI information from two different airborne sources that are equipped with GPS receivers (missile and drone). To prove out this concept, a Commercial Off the Shelf (COTS) Commercially/Available (C/A) code GPS receiver was integrated into the AN/DKT-80 sidewinder telemetry system (TM). A MQM-107 drone was intrumented with the same GPS receiver, as was a ground based reference station. A simple TM was developed for the drone that telemeters only the GPS data. The modified AN.DKT-80 system incorporated an Inertial Measurement Unit (IMU informaiton with the GPS data so accurate position can be generated if the GPS data was momentarily lost. A missile firing is scheduled for the spring of 1999 to prove this concept.