Compact Vector Magnetometer for Pico Satellites
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چکیده
A small vector magnetometer has been constructed for DTUsat – a Danish CubeSat student project at the Technical University of Denmark. The presented magnetometer is used for attitude determination in conjunction with sun sensors, and supply local field measurements for the magnetotorquer controller. Present launch date is June 30th, 2003 from Plesetsk, Russia. Constraints on mechanical size, mass, and power consumption due to the small satellite outline have lead to the development of a highly integrated magnetometer system. Excellent performance is achieved using integrated magnetoresistive thin film sensors with on-chip bias coil. Accuracy better than 50nT over the full operating range of -10◦C to 70◦C is achieved through careful circuit design and compensation in both hardware and software. The single PCB holds all magnetometer circuits including sensors, measurement circuits, synchronous serial interface for control and readout, and latch-up detection. This paper describes design, circuit topology, performance tests, and satellite level calibration of the vector
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تاریخ انتشار 2015