Systron Donner Inertial (SDI) has released a significant update to its SDN500 digital quartz MEMS GPS Inertial Navigation System (GPS/INS). Introduced in 2011, the SDN500 is a platform extension of SDIs tactical grade SDI500 IMU. The modular compact, 25-inch3 SDN500 is designed to provide packaging flexibility in dense systems and deliver accuracies to within 1.0 mrad in attitude, 0.1 m/s in velocity and 3.9 meters SEP (spherical error probability).
The updated SDN500 provides enhanced 100Hz position data and faster GPS acquisition and start up time through a newer generation 48-channel Coarse/Acquisition (C/A) Code GPS receiver. SDI, a business unit of Custom Sensors & Technologies (CST), said the updated SDN500 offers superior navigation, guidance or stabilization capabilities.
The SDN500 integrates SDIs latest generation quartz gyros capable of 0.5-deg/hr. bias in-run stability and exceptionally low ARW (0.02-deg/sq-rt-hr.), quartz accelerometers delivering 0.5 milli-g in-run bias stability and low VRW (80ug/sq-rt-hr.), plus high speed digital signal into a tightly coupled GPS-aided inertial navigation system for tactical navigation and geo-location applications. SDI said production units are available for ordering.
