The B-2 navigation system

The B-2 navigation subsystem (NSS) is a complex multi-sensor system integrating tuned rotor gyro inertial, ring laser gyro inertial and astro-inertial navigation systems as well as position and velocity aiding from the radar subsystem (RSS), a synthetic aperture radar (SAR). The NSS is designed to provide an extremely precise navigation solution for use in the B-2 avionics suite. The NSS is also being upgraded with a Global Positioning System (GPS) update capability. This paper describes the overall top level unclassified requirements for the NSS. The paper also describes the architecture and operation of the NSS and the interface with the rest of the B-2 avionics suite.<>