ABSTRACT
Of particularly crucial interest is the secondary problem of developing an array design for monitoring nuclear testing. In general, the main problems of interest are detecting an infrasonic signal and estimating the velocity and azimuth of the arrival, so that an event can be located. We seek optimal configurations for the number of stations and for their locations, i.e., choices for ri = (xj, Yi)', j = I, ... , N that produce enhanced detection performance and accurate resolution of the velocity and azimuth. The Infrasound Experts Group of the Geneva Conference on Disarmament has recommended an infrasound array design consisting of four elements, with three elements forming an equilateral triangle and the fourth at the center of the triangle. The Experts recommended that the sides of the triangle be in the range I to 3 km and these are the configurations that we focus on here. Complications that influence the optimal design are loss of signal correlation as the separation between the sensors increases.
