Silicon Sensing Systems has announced that its advanced DMU30 MEMS inertial measurement unit (IMU) will be incorporated into the control system of Japan’s inaugural small X-band synthetic aperture radar (SAR) satellite. This innovative satellite is being developed by the Institute for Q-shu Pioneers of Space, Inc. (iQPS), a pioneering space technology startup focused on providing near real-time data services.
Weighing in at 100 kg, the X-band SAR satellite boasts a remarkable resolution of 1 meter and is the first of a planned fleet of 36 satellites by iQPS. These satellites are set to deliver crucial earth observation data, aiding in disaster management and the surveying of land and infrastructure.
the DMU30 represents Silicon Sensing’s top-tier IMU, offering performance comparable to fiber optic gyro (FOG) units but with a more robust design and a compact low-SWaP (size, weight, and power) profile. This makes it exceptionally suited for prolonged space missions, having been calibrated for precise operation across a wide temperature range.
Once the satellite separates from the launch vehicle, the DMU30 will promptly commence its functions within the control system. It will collaborate with other onboard technologies to monitor and regulate angular velocity and attitude, while also evaluating and mitigating vibrations and other undesired movements that may occur during the deployment of critical components, such as the satellite’s large antenna.
Masahiko Uetsuhara, Project Manager at iQPS, stated, “Typically, gyro sensors produce outputs that accumulate errors over time and with significant temperature fluctuations, necessitating calibration. Though, the DMU30 eliminates this need, which saves us valuable man-hours and enhances operational efficiency—both of which are crucial for our project. Additionally, this product has demonstrated technical reliability in satellite applications, is ITAR-free, and offers an appealing price point for its performance level.”
Steve Capers,General Manager of Silicon sensing Systems,remarked,“The demand for accurate and controllable earth observation is rapidly growing in this dynamic market. Traditionally,SAR satellites,capable of penetrating weather conditions like cloud cover,have been large and costly. Innovations like our DMU30 all-silicon MEMS IMU are revolutionizing this sector, facilitating the creation of compact and economically viable satellites such as iQPS’s X-band SAR.”
