发明名称 |
Near-vertical direction finding and geolocation system |
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; transforming the Bearing Vector into locally level reference frame; and geolocating the RF emitter by determining an intersection between the locally level reference frame Bearing Vector and a dataset containing local terrain data. |
申请公布号 |
US8405550(B2) |
申请公布日期 |
2013.03.26 |
申请号 |
US201113046685 |
申请日期 |
2011.03.11 |
申请人 |
GOOCH RICHARD P.;ROSCOW ALAN W.;RAYTHEON APPLIED SIGNAL TECHNOLOGY, INC. |
发明人 |
GOOCH RICHARD P.;ROSCOW ALAN W. |
分类号 |
G01S5/02;G01S5/04 |
主分类号 |
G01S5/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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