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An analysis of Chosen Image Formation Algorithms for Synthetic Aperture Radar with FMCW

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EN
Abstrakty
EN
The modelling of FMCW SAR systems, due to long signal duration time, commonly used start-stop approximation for pulsed radars causes errors in the image. Continuous motion of the radar platform results in additional range-azimuth couplings and range walk term that should be considered in processing of signal from this type of radar. The paper presents an analysis of the following algorithms: Time Domain Correlation (TDC), Range Doppler Algorithm (RDA), and Range Migration Algorithm (RMA). The comparison of the algorithms is based on theoretical estimation of their computation complexity and the quality of images obtained on the basis of real signals of FMCW SAR systems.
Twórcy
  • Institute of Radioelectronic, Faculty of Electronics, Military University of Technology, Warsaw, Poland
autor
  • Institute of Radioelectronic, Faculty of Electronics, Military University of Technology, Warsaw, Poland
autor
  • Institute of Radioelectronic, Faculty of Electronics, Military University of Technology, Warsaw, Poland
Bibliografia
  • [1] J. J. M. de Wit, A. Meta and P. Hoogeboom, “Modified Range-Doppler processing for FM-CW synthetic aperture radar”, IEEE Geoscence and. Remote Sening Letters, vol. 3, no. 1 , pp. 83-87 (2006), DOI: 10.1109/LGRS.2005.856700
  • [2] M. A. Richards, “Fundamentals of Radar Signal Processing”, pp. 385, McGraw-Hill, New York, 2005.
  • [3] C. Leśnik and A. Kawalec, “Modification of a weighting function for NLFM radar signal designing”, Acta Physica Polonica. A, vol. 114 No. 6-A (2008), pp. A-143 - A-1479., DOI: 10.12693/APhysPolA.114.A-143
  • [4] A. Kawalec, C. Ziółkowski, C. Leśnik and J. Pietrasiński, “The Radar Ambiguity Function Application for the Frequency Modulated Signals Designing”,. Acta Physica Polonica. A, vol. 116 (2009), No. 3, pp. 335-339., DOI : 10.12693/APhysPolA.116.335
  • [5] A. Ribalta, “Time Domain Reconstruction Algorithms for FMCW-SAR”, IEEE Geoscence and. Remote Sening Letters, vol. 8, no. 3, May 2011, pp. 396-400., DOI: 10.1109/LGRS.2010.2078486
  • [6] R. Wang, O. Loffeld, H. Nies, S. Knedlik et al., “Focus FMCW SAR data using the wavenumber domain algorithm”, IEEE Transaction on Geoscience and Remote Sensing, vol. 48, no. 4 (2010), pp.2109-2118, DOI: 10.1109/TGRS.2009.2034368
  • [7] G. Xue, J. Yang and P. Liu, “Modified range migration algorithm integrated with motion compensation for FMCW SAR”, IET International Radar Conference 2013, 14-16 April 2013, DOI: 10.1049/cp.2013.0191
  • [8] I. Cumming and F. H. Wong, “Digital processing of synthetic aperture radar data: algorithms and implementation”, pp. 323-361, Artech House Publishers, London, 2005.
  • [9] R. Bamler, “A comparison of range-doppler and wavenumber domain SAR focusing algorithms”, IEEE Transaction on Geoscience and Remote Sensing, vol. 30, no. 4 (1992), pp. 706-713, DOI: 10.1109/36.158864
  • [10] C. Leśnik and P. Serafin, “Design and application of SAR image formulation algorithms with improved quality for data analysis station”, Internal technical report of the Institute of Radioelectronics MUT, Warsaw, October 2014, [in Polish].
  • [11] H.-C. Zeng, J. Chen, W. Liu and W. Yang, “Modified Omega-k algorithm for high-speed platform highly-squint staggered SAR based on azimuth non-uniform interpolation”, Sensors, vol. 15 (2015), pp. 3750-3765, DOI: 10.3390/s150203750
  • [12] C. Leśnik, P. Serafin and A. Kawalec, “Azimuth ambiguity suppression in SAR Images using doppler-sensitive signals”. Bulletin of the Polish Academy of Sciences: Techical Sciences, vol. 63 (2015), pp. 221-227, DOI: 10.1515/bpasts-2015-0026
  • [13] C. Leśnik, P. Serafin and H. Milczarek, “Experimental verification of the Range-Doppler Algorithm in a continuous wave SAR system”, Przegląd Elektrotechniczny, R. 91 NR 3/2015 (2015) [in Polish], DOI:10.15199/48.2015.03.26
  • [14] B.-C. Wang, “Digital signal processing techniques and applications in radar image processing”, Wiley, 2008, pp. 226-333.
  • [15] L. Guo, M. Xing, Y. Tang and J. Dan, “A novel modified Omega-k algorithm for synthetic aperture imaging lidar through the atmosphere”, Sensors, vol. 8 (2008), pp. 3056-3066, DOI: 10.3390/s8053056
Uwagi
PL
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.
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Bibliografia
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