Michael G. Guler’s scientific contributions

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Publications (1)


High Resolution Spherical Microwave Holography
  • Article

June 1995

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13 Reads

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17 Citations

IEEE Transactions on Antennas and Propagation

Michael G. Guler

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Edward B. Joy

A practical technique is developed to determine the electric and/or magnetic field on objects and sources inside a spherical measurement surface. The technique, known as spherical microwave holography (SMH), provides a nondestructive, nonintrusive method of point-by-point evaluation of antennas and radomes over their spatial extent. The resolution capability of SMH is developed and demonstrated by measurements. Resolution in SMH is only limited by the measurement system's capabilities. Dielectric and metallic obstacles on the surface of a radome are located and identified. Resolution as small as 0.33λ0 is demonstrated

Citations (1)


... By its physical nature, the recovery of the electromagnetic field in the vicinity of sources from near-field measurements is an ill-posed problem, i.e., the presence of noise in the measurements will be amplified in the solution and in most cases this solution will be useless. There have been previous authors that have implemented this procedure when the radiating surface is a separable geometry of the wave equation like planar [6,7], cylindrical [8,9] and spherical [10]. The inverse problem of back-propagation in these geometries relies on the expansion of the measured field by a complete set of eigenfunctions that provides an explicit form of the Green's function expansion that relate the measurements to the surface tangential components. ...

Reference:

Underwater Electromagnetic Holography Imaging Techniques for Shallow Water Mediums
High Resolution Spherical Microwave Holography
  • Citing Article
  • June 1995

IEEE Transactions on Antennas and Propagation