Sub-surface radar imaging

Details Sub-surface radar imaging Sub-surface radar imaging

2007-03-13

2007-03-13

Sotomayor, John B. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Transmission through media other than air or free space

C342S02500R, C342S179000, C342S194000, C342S188000

Reexamination Certificate

active

10491237

ABSTRACT:
Detailed is radar imaging apparatus including a single transmit antenna and at least one receive antenna, scanning apparatus (e.g. a pantograph) for mechanically scanning the antennas over a surface of interest, position providing apparatus (e.g. a computer driving the pantograph via an X-Y drive and a stepper motor) providing a position signal indicative of the instantaneous position of the transceiver and a control system for operating the transmit antenna in a stepped frequency continuous wave mode. The amplitude and phase components of the receive antenna signal are analysed and the output combined with the position signal as in a synthetic aperture array to provide a radar image signal of the surface and underlying features. The scan is two-dimensional (random or boustrophedral).

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