
The U123D is a revolutionary 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 data via RS422 interface.
The cylindrical unit measures just ∅40×90mm, weighs 150 grams and requires 1.5W powering. 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.
Due to magnetic shielding this inertial measurement unit offers two levels of magnetic immunity: 0.3°/h/Gauss and 0.01°/h/Gauss.
Additionally, the U123D FOG IMU is a cost-effective non-ITAR 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 / 0.01 °/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