Abstract
Linear Frequency Modulated Continuous Waveform (LFMCW) waveforms are widely used in Low Probability of Intercept (LPI) radars. In this work, Wigner- Hough based transforms are used to detect such waveforms. They are investigated for three aims: Minimizing the effects of Wigner-Ville Distribution (WVD) cross-Terms in the transforms, reducing the complexity of hardware implementation and producing the transform results faster. Modified Wigner-Hough Transform (MWHT) is analyzed for the first aim. Sample and hold type intermediate sampling and column-based thresholding techniques are examined for the second and third aims. A signal database (3000 signals with different SNR levels) is created and used to evaluate the performances of 8 alternative methods on probability of detection and probability of chirp rate estimation. The results are compared for -3dB down to -14dB SNR levels. Proposed method is found to be the best candidate to be implemented on Field Programmable Gate Arrays (FPGA) since it produces better performance with less computational density.
| Original language | English |
|---|---|
| Title of host publication | 2016 39th International Conference on Telecommunications and Signal Processing, TSP 2016 |
| Editors | Norbert Herencsar |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 441-444 |
| Number of pages | 4 |
| ISBN (Electronic) | 9781509012886 |
| DOIs | |
| Publication status | Published - 28 Nov 2016 |
| Event | 39th International Conference on Telecommunications and Signal Processing, TSP 2016 - Vienna, Austria Duration: 27 Jun 2016 → 29 Jun 2016 |
Publication series
| Name | 2016 39th International Conference on Telecommunications and Signal Processing, TSP 2016 |
|---|
Conference
| Conference | 39th International Conference on Telecommunications and Signal Processing, TSP 2016 |
|---|---|
| Country/Territory | Austria |
| City | Vienna |
| Period | 27/06/16 → 29/06/16 |
Bibliographical note
Publisher Copyright:© 2016 IEEE.
Funding
K.K.Guner, B.Erkmen, T.O.Gulum, A.Y.Erdogan, T. Yildirim and L.Durak-Ata are supported by the Scientific and Technological Research Council of Turkey, TUBITAK under the grant of Project No. 113E117.
| Funders | Funder number |
|---|---|
| TUBITAK | 113E117 |
| Türkiye Bilimsel ve Teknolojik Araştirma Kurumu |
Keywords
- Column-based thresholding
- FPGA
- LFMCW
- LPI radar
- Modified wigner-hough transform
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