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COTS-Based Wireless Magnetic Sensor for Small Satellites

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4 Author(s)
Michelena, M.D. ; INTA, Univ. Poletcnica de Madrid, Madrid, Spain ; Arruego, I. ; Oter, J.M. ; Guerrero, H.

We report on the utilization of a commercial off-the-shelf (COTS) magnetic sensor for the mission NANOSAT-01 and the set of tests that have been developed to up-screen it. The magnetic sensor head is a Wheatstone bridge formed by four anisotropic magnetoresistances (AMR). AMR sensors are an adequate choice for medium- to high-sensitivity (~3 mV/V/G) and resolution (~ 3 ¿G) requirements, mostly due to their low weight and volume that are so interesting for the aerospace industry. The whole system installed in NANOSAT-01 is formed by two biaxial sensors with two redundant PCBs (printed circuit boards) of RAD-HARD proximity electronics, which conditions the AMR output signal, measure the temperature, and resets the AMR. This magnetic sensor belongs to the attitude control system (ACS) of the satellite.

Published in:

Aerospace and Electronic Systems, IEEE Transactions on  (Volume:46 ,  Issue: 2 )

Date of Publication:

April 2010

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