Changing the economics of space The MIRAS-01 MEMS Inertial Rate Sensor provides reliable three-axis rate measurements to support attitude control. The unit gives full performance over its entire operating temperature range and does not require active thermal control. The internal clock can be synchronized to a pulse-per-second input from an onboard time reference such as the Surrey SGR-10 GPS receiver. Attitude rate measurements are time-stamped. The MIRAS-01 incorporates a test port to facilitate hardware-in-the-loop simulation. The unit accepts truth attitude rate via the test port and outputs representative rate telemetry. Applications MIRAS-01 Inertial Sensor dual-redundant pair) Heritage •• NigeriaSat-2 •• VNIIEM-Canopus-V1 •• LEO missions and constellations •• VNIIEM-BKA •• Three-axis control systems •• VNIIEM-Lomonosov •• Agile spacecraft •• GökTürk-2 •• Star camera blinding mitigation •• Autonomous de-tumble and sun acquisition •• Anomaly detection Features •• Manufactured to ECSS standards •• Three-axis attitude rate measurement •• MEMS sensor technology •• PPS clock synchronization •• Test port for closed-loop testing •• Available as single module or dual-redundant pair •• 7.5-year design life Heritage (as part of AIM bridge) •• DMC3 constellation (2014) •• Formosat-7 constellation (2016) •• 5 third-party missions (2016-2020) Subsystem ••Inertial Sensor (MIRAS-01) Specifications Subsystem ••Inertial Sensor (MIRAS-01) Options •• Different housing configurations Rate Range ± 8 deg/sec Measurement Output Rate 1–10 Hz (configurable) Noise 0.01 deg/sec/√Hz Bias Stability 10 deg/hr over 1hr Interfaces Mass 2.8 kg •• Dual-redundant CAN TM/TC interface Dimensions 324 x 191 x 96 mm •• LVDS PPS input Power 15–50 V, 5 W •• Various surface finishes •• RS422, RS485, and spacewire interface options •• RS422 test port -20ºC to +50ºC operating Temperature -30ºC to +60ºC non-operating Random Vibration 25 grms random in all axes Radiation Tolerance >5 kRad (Si) Typical Use MIRAS-01 28 V power PPS GEU x y z Data bus The small satellite revolution started 30 years ago with Surrey Satellite Technology—the world’s premier provider of operational and commercial satellite programs with over 40 satellites launched successfully and 240 years of on-orbit experience gained. From its Englewood, Colorado, facilities, Surrey supplies complete in-house design, manufacture, launch, and operation of small satellites, to include remote sensing, navigation, and communications payloads, avionics suites and subsystems, ground infrastructure, and training and consulting services. Surrey Satellite Technology US LLC 345 Inverness Drive South, Suite 100 | Englewood, CO 80112 | 303.790.0653 | www.surreysatellite.com Surrey US is AS 9100:2009-certified | GSA Contract Holder | Shop Surrey online at www.surreysatellite.com/shop December 2014 Product specification subject to change without notification
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