Error analysis of determining of small-scale atmospheric electrical discharges coordinates
The error of determining the coordinates of broadband pulses of radio -emission arising in the small-scale atmospheric discharges estimated. Four-point range-difference direction-finding system allowing determining three coordinates of radiation source is considered. Version of the system consisting of central receiving point, which is located in the center of equilateral triangle with the radius of circumscribed circle of 30 km, and three peripheral points located at vertices of the triangle, is studied. At that the errors of estimation of coordinates of antenna phase centers at receiving points and errors of measurements of signal arrival moments to different points taken into account. The errors arising in estimation of radio sources coordinates are calculated. It is found out that the errors of estimation х and y coordinates is substantially less than the errors of estimation of the radio source height. The error of estimations of arrival moments of the emitted signal to the receiving points should not exceed 40 ns. This can be achieved by using signals of space satellite navigation systems.