DIRECTION FINDING METHOD FOR MOBILE GROUND OBJECTS WITH ONE THREE-COMPONENT SEISMIC SENSOR Russian patent published in 2023 - IPC G01V1/16 G01V1/28 G08B13/16 G01S15/88 

FIELD: seismic exploration.

SUBSTANCE: used in security and exploratory and signaling complexes and systems for determining the direction of movement of mobile ground objects from one point using the processing of seismic vibrations excited by these objects in the surface soil layer and recorded by a three-component seismic sensor. A method for direction finding of moving ground objects by one three-component seismic sensor is proposed, including digital filtering in the frequency domain of readings of discretized mutually orthogonal seismic signal components received at the inputs of an A/D converter from the corresponding sensor outputs. Moreover, the filtered components are restored in the time domain, the elements of the covariance matrix are formed on their basis, which is used to find its eigenvectors and eigenvalues, the current readings of which are smoothed. The current readings of the x- and y -components of the first eigenvector and three eigenvalues of the covariance matrix are also smoothed. The current values of the azimuth angle of the moving ground object relative to the 0 X axis of the Cartesian coordinate system are estimated using the smoothed current readings of the x- and y -components of the first eigenvector, and the magnitude of the current readings of the ellipticity of the “scattering ellipse” is also estimated using the smoothed readings of the three eigenvalues. Additional filtering of the obtained current readings of the azimuthal angle and the ellipticity is carried out.

EFFECT: reducing the hardware redundancy when creating a device that implements the proposed method; reducing the installation time of the created device on the ground, saving energy and computing resources during its operation.

1 cl, 18 dwg