METHOD OF MEASURING AND PROCESSING TRANSIENT PROCESSES WITH GROUNDED LINE DURING PULSE FIELD EXCITATION WITH ELECTRIC DIPOLE TO CONSTRUCT GEOELECTRIC SECTIONS AND APPARATUS FOR CARRYING OUT SAID METHOD USING HARDWARE-SOFTWARE ELECTRICAL LOGGING SYSTEM (APEK "MARS") Russian patent published in 2016 - IPC G01V3/08 

FIELD: physics.

SUBSTANCE: method employs a dipole which transmits heteropolar rectangular pulses; measuring is carried out using one or more receiving apparatus simultaneously, using synchronisation based on a satellite positioning system. The method includes measuring electromagnetic field transient processes on time with the frequency of not less than 100 kHz and a dynamic range of not less than 24 bits, and then recording in a corresponding array of primary data; processing the array of primary data using robust regression analysis, using the following sequence of actions: suppressing the trend in the source data from the source, arising under the effect of telluric currents and polarisation of electrodes; precision removal of surges (peaks) in the record arising under the effect of thunderstorm activity; filtering using a low-pass robust filtering method in a two-dimensional sliding window based on time delays in the entire time range and calculating transient build-up curves with a logarithmic time increment on multiple tens of time delays to obtain transient process curves; to enable clear display of the field material and identification of search objects, minimising the effect of the geometrical position of the source-receiver on the values of transient processes at each time delay by calculating the values of transient processes using a robust regression analysis procedure using calculated transient process curves from the background section for the same geometry of the receiving apparatus with the same source-receiver arrangement and empirical relationships of receiver potential differences.

EFFECT: more accurate prediction of the presence of an anomaly generating object.

10 cl, 14 dwg