The IMU (Inertial Measurement Unit) sensor module plays a key role in orientation estimation, motion tracking, and data logging and analysis.

Orientation Estimation
The IMU continuously measures the satellite’s orientation in terms of roll, pitch, and yaw. By detecting the direction and rate of rotation, it contributes to attitude control and stabilization.

Motion Tracking
Using accelerometers, the IMU measures how fast the satellite is moving. It can capture data on descent speed, angular velocity, and impact forces after launch.

Data Logging and Analysis
Sensor measurements are transmitted to the onboard computer (OBC), where they can be used for trajectory analysis or visualized after reception on the ground.

Application in Control Algorithms
The IMU can be integrated with the satellite’s Attitude Determination and Control System (ADCS) to suppress unwanted rotations and maintain orientation.