公开(公告)号：EP1949132A2

公开(公告)日：2008-07-30

申请号：EP06808462.3

申请日：2006-11-08

申请人： QinetiQ Limited

发明人： SALMON, Neil, Anthony ,  HAYWARD, Stephen, David ,  KAUSHAL, Tej, Paul ,  MILLINGTON, David, Alan

IPC分类号： G01S13/89 ,  G01V8/00

摘要： A passive detection device is disclosed comprising a plurality of antennas, receivers, and a digital beamformer, wherein the antennas and receivers are adapted to receive radiation of millimeter wavelengths from a near field region, to process and digitize it. The beamformer is adapted to process the received information and to generate static image information relating to the region. An indication means is provided to indicate the presence of objects of interest. The beamformer is preferentially adapted to generate information simultaneously in a plurality of planes at different distances from the apparatus. The indication means may comprise an array of pixels along the length of the apparatus to display image information, and may use the multi-planar information to construct images of the region comprising data from a plurality of planes. The invention has utility in security scanning applications such as at airports or other locations where security detection equipment is employed.