matlab版超声模拟系统fieldII,JAJ开发。TheFieldprogramsystemusestheconceptofspatialimpulseresponsesasdevelopedbyTupholmeandStepanisheninaseriesofpapers[1,2,3].Theapproachreliesonlinearsystemstheorytofindtheultrasoundfieldforboththepulsedandcontinuouswavecase.Thisisdonethroughthespatialim