METHOD OF DETERMINATION OF INDUCTION OF MAGNETIC FIELD IN EARTH'S IONOSPHERE AND GEAR FOR ITS IMPLEMENTATION Russian patent published in 1997 - IPC

FIELD: geophysics, cosmic physics for timely prediction of earthquakes. SUBSTANCE: method of determination of induction B in Earth's ionosphere is based on finding of direction of inductance vector of quasi-constant magnetic field of the Earth on board spacecraft, on injection of beam of ions orthogonally to this direction and on its detection on board same spacecraft. Injection and detection of beam of ions are carried out under pulse mode and simultaneously there are determined value of field, magnetic component of electromagnetic field along vector and their superposition in region of Larmor orbit of ions. In this case rate of injection of beam of ions relative to spacecraft and frequency f of pulse repetition matched with expected frequency of change are set, time t of travel of ions from injector to detector is measured and vector of orbital velocity of apparatus also found. Gear for implementation of method of determination of induction B in Earth's ionosphere has injector, detector of beam of ions and vector magnetometer placed on board spacecraft. Gear is supplemented with register of moment of escape of beam of ions across output of injector, unit measuring time of motion of beam of ions from injector to detector, unit determining vector of orbital velocity of spacecraft, storage, unit processing and generating results with computation of induction B of magnetic field. Outputs of register of escape of ions and detector are connected through unit measuring time of motion of ions to input of unit processing and generating results which other inputs are connected through storage to outputs of vector magnetometer and unit determining vector of orbital velocity of apparatus. Toroidal solenoid embracing beam of ions across output of injector can be used in the capacity of register of moment of escape of ions from injector. EFFECT: enhanced accuracy and authenticity of method. 3 cl, 5 dwg, 2 tbl