Honeywell's newest and most advanced pedestrian navigation product is the DRM4000 designed for GPS-denied, man-portable navigation. The DRM4000 is a state-of-the-art dead reckoning device using patented motion classification algorithms to analyze walking motion and compensate for unique user kinematics as required. This device uses an internal Kalman filter for integrating onboard sensors plus external GPS data (NMEA0183 format) and nominally provides a position accuracy of 2% of the distance traveled with GPS and sensors. The sensors onboard include 3 gyros, 3 accelerometers, 3 magnetometers, and a barometric altimeter for both horizontal and vertical position location. By combining the DRM4000 with a GPS receiver, position location is ascertained in normal, GPS-denied, and GPS reflection environments. The 2” x 2” x 0.5” size of the DRM4000 enables man-portable applications like personnel tracking, disaster relief operations, safe pathway guidance and mapping tasks.