Direct string magnetic gradiometer for space applications
نویسندگان
چکیده
منابع مشابه
Direct string magnetic gradiometer for space applications
Recently, a novel Direct String Magnetic Gradiometer (DSMG) has been developed, where a vibrating wire, driven by an AC current, is used as a single sensitive element. It is designed to directly measure the local off-diagonal components of the magnetic gradient tensor, Bxz, Byz and Bxy, provided the distance to an object creating magnetic anomalies is much larger than the length of the string. ...
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Nearly all magnetic gradiometers in use utilise two magnetometers, separated along a base line, differencing a measured total magnetic field. Taking the difference in the magnetic field strength at those two locations gives an estimate of the magnetic gradient. Difficulties in cancelling out the huge magnetic field of the Earth (30000 – 50000 nT compared to gradients signals measured in nT/m) a...
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Small magnetic sensors are widely used integrated in vehicles, mobile phones, medical devices, etc for navigation, speed, position and angular sensing. These magnetic sensors are potential candidates for space sector applications in which mass, volume and power savings are important issues. This work covers the magnetic technologies available in the marketplace and the steps towards their imple...
متن کاملReducing the magnetic susceptibility of parts in a magnetic gradiometer
The materials requirement inside a magnetic gradiometer is stringent because the presence of magnetic susceptible material will introduce intrinsic errors into the device. Many commercial grade non-magnetic materials still have unacceptably high levels of magnetic susceptibility between 10 and 10. It is shown here that machining with steel tools can further increase the susceptibility by up to ...
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ژورنال
عنوان ژورنال: Sensors and Actuators A: Physical
سال: 2008
ISSN: 0924-4247
DOI: 10.1016/j.sna.2008.06.014