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The U121D is an advanced FOG-based inertial measurement unit (FOG IMU) which features ultra-small lightweight design coupled with extremely low power consumption. It integrates three of our smallest fiber optic gyroscopes with three MEMS accelerometers. Its fully integrated ADC board provides output data via RS422 interface.
The U121D has a footprint of 63×56mm, it weighs 195 grams and consumes 1.5W of power. The U123D offers low noise performance with 0.05°/√h ARW and 1°/h bias stability. The accelerometers deliver 10g range, 0.2mg bias stability and 250 Hz bandwidth.
With internal magnetic shielding this inertial measurement unit exhibits high magnetic immunity of 0.3 °/h/Gauss.
Additionally, the U121D FOG IMU is a cost-effective ITAR-free solution.
Our FOG-based IMUs have been developed to satisfy growing market demand for low SWaP (size, weight, and power) inertial products for autonomous and unmanned systems with space- and layout-limitations. The units are well-suited for inertial navigation systems (INSs) in UAVs / UUVs / USVs / ROVs.
GYROSCOPES PERFORMANCE
Input range: 400 °/s
Bias, RMS: 1°/h
ARW: 0.05 °/√h
Magnetic response: 0.3 °/h/Gauss
ACCELEROMETERS PERFORMANCE
Range: 10 g
Bias stability: 0.2 mg
Bandwidth: 250 Hz
ELECTRICAL INTERFACE
Initialization: 1 s
Powering: 1.5 W
Data rate: 4 kHz
Baud rate: 921.6 kBd
ENVIRONMENT
Operating temperature: -40…+70 °C
Endurance temperature: -55…+85 °C
Vibration, RMS: 6 g
Shocks: 350 g
PHYSICAL PARAMETERS
Dimensions: 63 × 56 × 40 mm
Weight: 195 gr
Volume: 12 cl (7.3 in3)
Housing: Al alloy
