INS Face Off - Inside GNSS

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ins face off MEMS versus FOGs CHRIS GOODALL, SARAH CARMICHAEL, NASER EL-SHEIMY. TRUSTED POSITIONING INC. BOB SCANNELL. ANALOG DEVICES INC. Technology improvements in microelectromechanical systems (MEMS). used for positioning and navigation have made them a candidate technology for precise positioning applications that were previously dominated by fiberoptic gyroscopes (FOGs). This article describes development of a MEMS-based integrated navigation system (GNSS/inertial) and a similar FOG-based system and compares their performance in field trials, both Off-road comparison testing of MEMS.

magnetometer into the sys - tem to initialize the head-ing and provide a weak heading update during long GNSS signal outages. Special calibration routines

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