Application of postprocessing techniques methods for noise reduction in cylindrical near field antenna measurements

Facila, Francisco Cano; Silva, Manuel

doi:10.1109/eucap.2012.6206601

Cited by 1 publication

(1 citation statement)

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“…It is known that spatial bandwidth for the monostatic image data acquisition of a certain target is twice the spatial bandwidth of a bistatic data acquisition configuration (i.e., fixing the Tx and moving only the Rx) [19], [20]. Consequently, according to the spatial bandwidth for a bistatic cylindrical acquisition, which are the same as for antenna measurements [21], [22], it is straightforward to show that the sampling rules for a given cylindrical target of radius a 0 are:…”

Section: B Spatial Sampling Considerationsmentioning

confidence: 99%

Nondestructive Evaluation of Microwave-Penetrable Pipes by Synthetic Aperture Imaging Enhanced by Full-Wave Field Propagation Model

Laviada

Ghasr

et al. 2019

IEEE Trans. Instrum. Meas.

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A qualitative approach for microwave imaging multi-layered cylindrical structures (e.g., dielectric pipes) is proposed in this paper. This approach relies on a modified circular synthetic aperture imaging technique that exploits closed-form Green's function to account for the different propagation delays, internal reflections and refractions. The image can then be computed by employing a matched-filter expressed in terms of efficient Fourier Transforms. Consequently, a high-resolution and contactless approach for the inspection of this kind of structures is achieved. Moreover, the computational resources to render the images are negligible. Practical aspects of the technique such as sampling criteria, resolution and limitations of the technique are discussed. The efficacy of the method is illustrated via several examples including imaging of objects and anomalies inside different types of dielectric pipes.

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