Non-linear processing based on Dolphin inspired real LFM signals for enhanced delay-Doppler resolution
In this paper, we study two non-linear processing approaches, inspired by biosonars, to enhance the delay-Doppler resolution. We use real linear frequency modulated (LFM) signals to fulfill a model, based on an abstraction and modification of the dolphin signals of certain species. With the help of...
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Published in | OCEANS 2014 - TAIPEI pp. 1 - 7 |
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Main Authors | , , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
01.04.2014
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Subjects | |
Online Access | Get full text |
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Summary: | In this paper, we study two non-linear processing approaches, inspired by biosonars, to enhance the delay-Doppler resolution. We use real linear frequency modulated (LFM) signals to fulfill a model, based on an abstraction and modification of the dolphin signals of certain species. With the help of Hilbert transform, two delay-Doppler images can be generated through single LFM signal. Non-linear algorithms are then applied and analyzed for producing a super delay-Doppler resolution when combining the images together. We also investigate the detection performance of those algorithms. Overall, the developed non-linear processing offers a great improvement in delay-Doppler resolution while the detection performance is close to that of the conventional matched filter receiver without significant increase in system or computational complexity. |
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DOI: | 10.1109/OCEANS-TAIPEI.2014.6964562 |