FIELD: meteo- and radio-location; radio navigation; lightning locators, lightning direction finders, radio compasses.
SUBSTANCE: proposed circular direction finder is available of three design alternates distinguished by different accuracy in bearing measurements and used for low and very low frequencies of electromagnetic fields; all of them depend for their operation on measuring and accounting for phase shift between electric and magnetic components of electromagnetic field in closest zone; they provide for measuring observed bearing angle ranging between 0 and 360 deg.
EFFECT: ability of high-accuracy unambiguous measurements of observation bearing within specified range.
3 cl 7 dwg
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