Microwave Holography Using Point-Spread Functions Measured With Calibration Objects
| Autor: | Justin J. McCombe, Reza Khalaj Amineh, Natalia K. Nikolova, Ali Khalatpour |
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| Rok vydání: | 2015 |
| Předmět: |
Imagination
Physics Image quality media_common.quotation_subject System of measurement 020208 electrical & electronic engineering Holography Fidelity 020206 networking & telecommunications 02 engineering and technology Iterative reconstruction law.invention Microwave imaging law 0202 electrical engineering electronic engineering information engineering Calibration Electronic engineering Electrical and Electronic Engineering Instrumentation Algorithm media_common |
| Zdroj: | IEEE Transactions on Instrumentation and Measurement. 64:403-417 |
| ISSN: | 1557-9662 0018-9456 |
| DOI: | 10.1109/tim.2014.2347652 |
| Popis: | Microwave holography requires knowledge of the incident field and the Green tensor of the background medium. In near-field imaging, analytical models of these are inadequate and the use of electromagnetic simulations has been previously proposed. In practice, however, the fidelity of such simulations may also be insufficient. Here, we propose a measurement method for the acquisition of this information, thus eliminating the need to estimate it analytically or numerically. We validate the approach through simulated data acquisitions as well as through experiments. It is shown that this approach characterizes the measurement system more reliably than simulations leading to significant improvement of the image quality. |
| Databáze: | OpenAIRE |
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