3-COMPONENT MAGNETOMETRIC SYSTEM FOR AN AUTOMATIC NAVIGATIONAL SYSTEM

We describe a three-component high-frequency ferrite-cored probe-coil magnetometer developed at the Institute of the Metal Physics, Urals Br anch, Russian Academy of Sciences which meets the high demands made on the orthogonality and scaling of all three field components with resp ect to the sensitivity and linearity of the dependence of the output s ignal on the magnitude of the field to be measured under conditions of prolonged operation of the device. This magnetometer is a necessary p art of an automatic navigational system including (in addition to the magnetometer itself) a vertical gyroscope (for measuring angles of rol l, pitch, or yaw) and a computer for fast solution of the Poisson equa tion. The automatic navigational system allows us to practically insta ntaneously determine all three components of the geomagnetic field on a moving ferromagnetic vehicle with error no greater than six angular minutes.