Research on Three-station Location Method for Nuclear Explosion Infrasound Detection

摘要

This paper, aiming at infrasound ternate array, adopts time difference of arrival of the sound wave to carry out event location calculation with program implementation to judge the direction of incoming wave of the explosion infrasound event and to estimate the distance of explosion dot at the same time. Through the verification of this algorithm by chemical explosion experiment, the result shows that the location precision is within the range of 2° and the distance estimation precision aiming at actual distance of 1,550m is within the range of 100m. Current technologies mainly adopt ternate array for event orientation and multiple ternate arrays crosswise to complete event location. Compared to the simplest single three-station infrasound location technology, the location method in this paper reaches a higher location precision.