METHOD OF DETERMINING AND COMPENSATING DEVIATION OF MAGNETOMETRIC SENSORS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC G01C21/08 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring equipment and can be used on aircraft (AC) for determination of deviation factors describing variations of intensity of the Earth's magnetic field (EMF) entered by the aircraft directly in flight for compensation of these variations when calculating the magnetic heading. To determine and compensate the deviation additionally used are measurements of the satellite navigation system (SNS) by speed in the Eastern and the Northern directions, determined is the AC track angle and performed is the heading alignment of the strap down inertial navigation system (SDINS) by the track angle during steering and take-off till the moment of wheels separation from the runway (RW). After climbing at height H ≥ 1,000 m performed is the figure of aerobatics called "eight" in the horizontal plane with constant absolute values of roll, herewith while executing the figure determined are differences of the magnetic heading and the true heading from the SDINS, determined and recorded are the mean differences values determined on the first and the second sections of the "eight" at the same magnetic headings. Then averaged are the recorded values of differences within the range of 1 degree for the entire working range corresponding to 360 degrees. Obtained average values, which are the deviation of the magnetic compass, are used for correction of the magnetic heading. Device for the method implementation comprises three-component magnetometric sensor 1, unit 2 for determining magnetic heading, adder 3, SDINS 4, subtractor 5, correction unit 6, SNS 7, unit 8 for determining the heading angle, logical switching unit 9 and control panel 10.

EFFECT: technical result is the possibility of determining and compensating all components of deviation factors of magnetometric sensors in every flight using special maneuvers after takeoff and the SNS, and thus reducing labour costs and time of the AC preparation for flight.

2 cl, 1 dwg