GPS-based 3-D Attitude Determining SAASM Receiver System for Gun-Launched Projectiles

Toyon Research Corporation and Rockwell Collins propose to develop an anti-jam (AJ) GPS receiver for gun-launched projectiles that incorporates a Selective Availability/Anti-Spoofing Module (SAASM) and provides direct GPS-based 3-D attitude measurements for spin-stabilized and non-spin-stabilized platforms. The roll angle accuracy of the system, while tracking seven satellites and spinning at rates of as much as 300 Hz, is predicted to be better than 3.0 degrees (one-sigma) and the pitch/yaw accuracy is predicted to be better than 2.2 degrees (one-sigma), respectively. The GPS-based attitude (GPS/A) sensor capability is due to Toyon’s patent-pending MIDAAS(TM) receiver architecture while Rockwell Collins provides proven gun-hardened SAASM GPS receiver technology and manufacturing capabilities.