DEVICE FOR MAGNETOMETRIC LOCAL NAVIGATION Russian patent published in 2023 - IPC G01C21/00 G01S5/16 G01V3/10 

FIELD: measuring technology.

SUBSTANCE: invention relates to the field of measuring technology, navigation and is intended to determine the location and orientation of various objects, including unmanned aerial vehicles, relative to a source of an alternating rotating magnetic field. The magnetometric local navigation device additionally contains a frequency divider connected in series and a third inductor, six bandpass filters, as well as a signal adder and a clock generator connected in series. The third inductor is placed mutually orthogonally with respect to the first and second inductors. Three of the six bandpass filters are tuned to the frequency of the navigation field, and three - to its even subharmonic. The output of the clock generator is connected to the second input of the coordinate calculation unit. The first, second and third outputs of the magnetic field sensor are connected to the combined inputs of the corresponding pair of bandpass filters, one of which is tuned to the frequency of the navigation field, and the second - to its even subharmonic. The outputs of the first, second, and third bandpass filters tuned to the navigation field frequency are connected to the corresponding inputs of the analog-to-digital converter, and the outputs of the fourth, fifth, and sixth bandpass filters, tuned to the even subharmonic of the navigation field frequency, are connected to the first, second, and third inputs. signal adder. The frequency divider input is connected to the combined output of the harmonic signal source.

EFFECT: expansion of the coordinate space of the application area, where navigation tasks can be solved with high accuracy using a magnetometric local navigation device.

1 cl, 1 dwg