Signal measurement and data are fundamental in the infrasonic studying area and observatory array is the main model in modern infrasound measurement.Two experimental untended infrasonic arrays are set up in Xinjiang,China.Each array is designed in triangle shapes.Three stations are on the vertexes of the triangle symmetrically and the other station is on the center of the triangle.This design of the array could provide a symmetrical array response.The infrasonic element station is mainly composed of the win...