公开(公告)号：EP2598903A1

公开(公告)日：2013-06-05

申请号：EP11813294.3

申请日：2011-07-29

申请人： Raytheon Applied Signal Technology, Inc.

发明人： GOOCH, Richard P. ,  ROSCOW, Alan W.

IPC分类号： G01S3/02

CPC分类号： G01S3/023 ,  G01S3/043 ,  G01S3/48 ,  G01S5/12

摘要： A system and method for geolocating an RF emitter disposed on or near the ground includes receiving a signal from the RF emitter at each antenna of an array of N non-collinear antennas, wherein N is an integer greater than 2; routing the signal received at each of the antennas to one of a bank of N corresponding receivers; downconverting the N received signals to N downconverted signals; digitizing the N downconverted signals to digitized signals on N corresponding channels; using a processor to determine phase and amplitude variations across the N channels and to determine a Direction Vector corresponding to the signal received from the RF emitter; using a 2-dimensional pre-determined calibration table to look up a best match to the Direction Vector to determine a Bearing Vector to the RF emitter; and transforming the Bearing Vector into locally level reference frame.