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The magnetometer described in this paper was designed for the purpose of measuring the distant geomagnetic and interplanetary magnetic fields. The sensing element is a coil fixed in the frame of a spinning vehicle. The associated nonlinear amplifier has a dynamic range of approximately three decades and an equivalent noise threshold of 6.0 microgauss. This system has been flown in the Pioneer I, Explorer VI and Pioneer V payloads to detect both absolute magnitude and directional changes in the magnetic field intensity at great distances. The complete unit enclosed in an RF shielded container weighs one pound.
Space Electronics and Telemetry, IRE Transactions on (Volume:SET-6 , Issue: 3-4 )
Date of Publication: September-December 1960