Optimization of Frequency Parameters Choice in the Polarization Analysis of Transport Noise

One of the passive geophysical monitoring tasks for transport noise moving sources is to determine their location against a background noise at current time moments using three-component registration. The polarization processing method with preliminary signal filtering in informative frequency bands is considered. The orientation of the polarization-processed scattering ellipse allows us to determine the azimuthal direction to the source. The azimuthal error arising here is due to external noise from the environment. One of the methods to reduce it is to use preliminary filtering of useful oscillations in the informative frequency bands. The optimization problem of preliminary band-pass filtering parameter choice to increase the accuracy of direction finding is considered. Numerical estimates of the accuracy of solving the problem under field experiment conditions are obtained. It is shown that the use of band-pass filtering can significantly increase the accuracy of determining the direction to the source, which becomes more noticeable with increasing distance to it.