Image of Space Inventor - Inertial Measurement Unit // IMU-P4 on the satsearch marketplace

Key highlights

The IMU-P4 is a compact and rugged inertial measurement unit comprising two redundant Murata SCH16T-K01 6-DOF XYZ-axis Gyroscope and XYZ-axis Accelerometer and two RM3100 magnetometers as well as temperature sensors. The two redundant sets of sensors are interfaced via two redundant microcontrollers and redundant CAN bus interfaces with CSP (Cubesat Space Protocol) making them accessible from the satellite communication bus.

Key features

Dual redundant sensors
6 Degree of freedom IMU sensor
3 axis magnetometer
Temperature sensor

Gyroscope
Bias instability 0.3°/h at tau=10s
Angular random walk 0.015 °/√h
Noise density level 0.0004°/s/√Hz
1600 LSB per dps
20 bit resolution
Temperature calibrated offset drift <20°/h
from -10 to 50 degrees

Accelerometer
Range: +/- 8g
Sensitivity: 4905 LSB/g

Magnetormeter
Range: ± 1100 µT
Noise: 15 nT
In-orbit calibration: <1000 nT absolute error

Typical Output rate 1 or 5 Hz

Interface
Dual CAN bus + CSP 2.0 protocol

Power
Input range: 5-36 V
Power consumption: 200 mW

Mechanical
Aluminium housing
93 x 93 x 12.5 mm
Mass: 150 g

Reliability
Radiation total dose tested EEE parts
Vibration rated for all launch vehicles
5 years design lifetime

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Last updated: 2026-01-08