In this article, infrasound monitor nodes and array in different dimension are built, rosette space filter for reducing wind noise is designed, experiment shows results of noise reduction, monitor system for data management based on internet is found, method for abnormal infrasound abstracting based on improved STA/LTA algorithm and confirmation method based on energy curve and Pearson correlation coefficient are presented, sound source position are estimated by modified weighting minimum delay variance method using monitor data, accuracy is identified by result. Phase calibration of infrasound transducer is studied, prototype is built, relative error between experiment and theory is compared, and feasibility is validated.