TY - JOUR
T1 - Microwave imaging using indirect holographic techniques
AU - Smith, Dave
AU - Yurduseven, Okan
AU - Livingstone, Bryan
AU - Schejbal, Vladimir
PY - 2014/2/1
Y1 - 2014/2/1
N2 - This work describes how indirect holographic techniques, previously applied to the determination of antenna radiation patterns, can be adapted for the imaging of passive objects. It provides details of how complex scattered field values can be obtained in a simple and inexpensive manner from sampled scalar intensity measurements taken over a single scanning aperture. This work provides a brief outline of the basic theory of indirect microwave holography, and how the transformation of the holographic intensity pattern into the Fourier domain enables the isolation of the terms required for complex field reconstruction to be isolated from the remaining terms. The work is supported by a range of experimental results, illustrating the reconstructed complex fields for a number of simple test objects. Back-propagation techniques have also been included to reconstruct complex fields at the position of the scattering objects.
AB - This work describes how indirect holographic techniques, previously applied to the determination of antenna radiation patterns, can be adapted for the imaging of passive objects. It provides details of how complex scattered field values can be obtained in a simple and inexpensive manner from sampled scalar intensity measurements taken over a single scanning aperture. This work provides a brief outline of the basic theory of indirect microwave holography, and how the transformation of the holographic intensity pattern into the Fourier domain enables the isolation of the terms required for complex field reconstruction to be isolated from the remaining terms. The work is supported by a range of experimental results, illustrating the reconstructed complex fields for a number of simple test objects. Back-propagation techniques have also been included to reconstruct complex fields at the position of the scattering objects.
KW - Microwave imaging
KW - microwave holography
KW - near-field microwave imaging
KW - image reconstruction
KW - Fourier optics
U2 - 10.1109/MAP.2014.6821762
DO - 10.1109/MAP.2014.6821762
M3 - Article
VL - 56
SP - 104
EP - 117
JO - IRE Professional Group on Antennas and Propagation Newsletter
JF - IRE Professional Group on Antennas and Propagation Newsletter
SN - 1045-9243
IS - 1
ER -