A 3-D millimeterwave luggage scanner

Abstract

A light weight, transportable measurement system for the inspection of suspicious luggage in a threat situation has been developed, based upon miniaturized millimetre wave radar modules operating at W-band. To allow for a sufficient detection capability of objects hidden within a piece of ownerless luggage within a passenger terminal at a sufficiently short scanning time, a radar approach rather than a passive radiometer technique was chosen. It is generally recognized, that only synthetic aperture is able to supply a sufficient geometrical resolution at high imaging speed. Moreover a radar can also deliver a three dimensional description for the position and the shape of a concealed object using high range resolution techniques. The paper describes the measurement set-up and the evaluation algorithm. Typical examples for different set-ups are presented

Security assistant system combining millimetre wave radar sensors and chemical sensors

“…The monolithic microwave integrated circuit (MMIC) of the 94 GHz radar (shown in Fig. 4 and 5) module includes a varactor tuned VCO with injection port, very compact transmit and receive amplifiers and a single-ended resistive mixer [1][2][3][4]. The VCO approach in comparison with an upconverter approach has the advantage of much lower spurious frequencies.…”

“…Centimeter and millimetre waves are often used for nondestructive material inspection [6][7] or security applications [3] as they are able to penetrate most of dielectric materials. To demonstrate it without using laboratory equipment, a luggage scanner has been set up.…”

3D SAR imaging for dry wall inspection using an 80 GHz FMCW radar with 25 GHz bandwidth

“…Other objects of interest are abbandoned baggages, where one wants to know whether the baggage contains explosives [5]- [8]. The imaging modalities in these cases are nearly the same as in the present paper.…”