In indoor scenario, radar echoes are interfered by clutter from walls, ceilings, floors, and other indoor objects. Therefore, clutter suppressing is one of the key problems for indoor radar. This paper focuses on the problem of clutter suppressing for a secondary radar system which can be used in indoor localization. A clutter suppressing method based on orthogonal polarization character is presented. The orthogonal polarization character here is achieved by a designed transceiver, which can transpond electromagnetic waves in vertical polarization if and only if the received signal is in horizontal polarization. Thus the newly introduced polarization character can be used to discriminate target from clutter. Clutter is suppressed after calculating scattering similarity parameters via Pauli decomposition. Simulations and an experiment are conducted to demonstrate the proposed method. Compared with previous methods, the proposed method can distinguish stationary target with both static and varying clutters. Therefore, it is more practical for applications.
"Clutter Suppression for Cooperative Radar Based on Orthogonal Polarization Character," Progress In Electromagnetics Research C,
Vol. 87, 227-240, 2018. doi:10.2528/PIERC18081801
1. Deak, G., K. Curran, and J. Condell, "A survey of active and passive indoor localisation systems," Computer Communications, Vol. 35, No. 16, 1939-1954, 2012. doi:10.1016/j.comcom.2012.06.004
2. Deak, G., K. Curran, and J. Condell, "History aware device-free passive (DfP) localisation," Image Processing and Communications, Vol. 16, No. 16, 21-30, 2011.
3. Farid, Z., R. Nordin, and M. Ismail, "Recent advances in wireless indoor localization techniques and system ," Journal of Computer Networks and Communicaitons, Vol. 2013, Article ID 185138, 12 pages, 2013.
4. Rantakokko, J., J. Rydell, and P. Stromback, "Accurate and reliable soldier and first responder indoor positioning: Multisensor systems and cooperative localization," IEEE Wireless Communications, Vol. 18, No. 2, 10-18, 2011. doi:10.1109/MWC.2011.5751291
5. Mautz, R., "Indoor positioning technologies," Habilitation Thesis, ETH Zurich, Zurich, Switzerland, 2012.
6. Bahl, P. and V. N. Padmanabhan, "RADAR: An in-building RF-based user location and tracking system," International Conference on Computer Communications, Vol. 2, 775-784, Tel Aviv, Israel, 2000.
7. Chen, L., C. Wu, Y. Zhang, H. Wu, and C. Maple, "A survey of localization in wireless sensor network," Int. J. Distrib. Sens. Netw., Vol. 8, No. 4, 385-391, 2012.
8. Parr, A., R. Miesen, and M. Vossiek, "Comparison of phase-based 3D near-field source localization techniques for UHF RFID," Sensors, Vol. 16, No. 7, 2016. doi:10.3390/s16070978
9. Nguyen, V. and V. Pyun, "Location detection and tracking of moving targets by a 2D IR-UWB radar system," Sensors, Vol. 15, No. 3, 6740-6762, 2015. doi:10.3390/s150306740
10. Peng, Z., J. Munozferreras, Y. Tang, R. Gomezgarcia, and C. Li, "Portable coherent frequency-modulated continuous-wave radar for indoor human tracking," Proc. IEEE Topical Conf. Biomed. Wireless Technol., Netw., Sens. Syst. (BioWireleSS), 36-38, Austin, USA, Apr. 2016.
11. Mitilineos, S. A., D. M. Kyriazanos, O. E. Segou, J. N. Goufas, and S. C. A. Thomopoulos, "Indoor localization with wireless sensor networks," Progress In Electromagnetics Research, Vol. 109, 441-474, 2010. doi:10.2528/PIER10062801
12. Munozferreras, J., Z. Peng, R. Gomezgarcia, et al. "Isolate the clutter: pure and hybrid Linear-Frequency-Modulated Continuous-Wave (LFMCW) radars for indoor applications," IEEE Microwave Magazine, Vol. 16, No. 4, 40-54, 2015. doi:10.1109/MMM.2015.2393995
13. Tivive, F. H., A. Bouzerdoum, and M. Amin, "A subspace projection approach for wall clutter mitigation in Through-the-Wall radar imaging," IEEE Trans. Geosci. Remote Sens., Vol. 53, No. 4, 2108-2122, 2015. doi:10.1109/TGRS.2014.2355211
14. Ash, M., M. Ritchie, and K. Chetty, "On the application of digital moving target indication techniques to Short-Range FMCW radar data," IEEE Sensors Journal, Vol. 18, No. 10, 4167-4175, 2018. doi:10.1109/JSEN.2018.2823588
15. Pourmottaghi, A., M. R. Taban, and S. Gazor, "A CFAR detector in a nonhomogenous weibull clutter," Trans. Aerosp. Electron. Syst., Vol. 48, No. 2, 1747-1758, 2012. doi:10.1109/TAES.2012.6178094
16. Lee, B. H., S. Lee, and Y. J. Yoon, "Adaptive clutter suppression algorithm for human detection using IR-UWB radar," IEEE SENSORS, 1-3, Glasgow, UK, Oct. 2017.
17. Valmori, F., A. Giorgetti, and M. Mazzotti, "Indoor detection and tracking of human targets with UWB radar sensor networks," IEEE Int. Conf. Ubiquitous Wireless Broadband (ICUWB), 1-4, Nanjing, China, Dec. 2016.
18. Yang, J., Y. N. Peng, and S. M. Lin, "Similarity between two scattering matrices," Electron. Lett., Vol. 37, No. 3, 193-194, 2001. doi:10.1049/el:20010104
20. Van Zyl, J. J., H. A. Zebker, and C. Elachi, "Imaging radar polarisation signatures: Theory and observations," Radio Science, Vol. 22, 529-543, 1987. doi:10.1029/RS022i004p00529
21. Yun, Z. and M. F. Iskander, "Ray tracing for radio propagation modeling principles and applications," IEEE Access, Vol. 3, 1089-1100, 2015. doi:10.1109/ACCESS.2015.2453991
22. Zhou, C., "Ray tracing and modal methods for modeling radio propagation in tunnels with rough walls," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 5, 2624-2634, 2017. doi:10.1109/TAP.2017.2677398
23. Tayebi, A., J. Gomez, F. M. S. D. Adana, and O. Gutierrez Blanco, "The application of ray-tracing to mobile localization using the direction of arrival and received signal strength in multipath indoor environments," Progress In Electromagnetics Research, Vol. 91, 1-15, 2009. doi:10.2528/PIER09020301
24. Blas Prieto, J., P. Fernandez Reguero, R. M. Lorenzo, E. J. Abril, S. Mazuelas Franco, A. Bahillo Martinez, and D. Bullid, "A model for transition between outdoor and indoor propagation," Progress In Electromagnetics Research, Vol. 85, 147-167, 2008. doi:10.2528/PIER08072101
25. Martinez, D., F. Las-Heras Andres, and R. G. Ayestaran, "Fast methods for evaluating the electric field level in 2D-indoor environments," Progress In Electromagnetics Research, Vol. 69, 247-255, 2007. doi:10.2528/PIER06122105