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The possibility to detect and analyze multipath signals of global navigation satellite systems (GNSS) caused by aircrafts is an attractive basis for the development of a passive surveillance sensor. Due to the fact that the received signal strength of global navigation satellite systems on earth surface is very low and the radar cross sections (RCS) of an aircraft strongly varies with the illumination...
This paper presents a multiple-input–multiple-output imaging system on the basis of a hybrid concept with synthetic aperture radar and digital beam forming. By moving a multistatic linear array perpendicularly to the array dimension, a 2-D aperture is sampled. The scope of application is concealed weapon detection in conjunction with the imaging of humans and, alternatively, nondestructive testing...
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