An analysis of the moving speed effect of the receiver array on the passive synthetic aperture signal processing

수동형 합성개구 신호처리에서 수신 배열 센서의 이동 속도에 대한 영향 분석

Kim, Sea-Moon;Byun, Sung-Hoon;Oh, Sehyun

  • Received : 2016.10.05
  • Accepted : 2015.12.18
  • Published : 2016.03.31


In order to obtain high-resolution seafloor images, research on SA (Synthetic Aperture) processing and the development of related underwater systems have been performed in many countries. Recently the SA processing is also recognized as an important technique in Korea and researchers started related basic study. However, most previous studies ignored the Doppler effect by a moving receiver array. In this paper reconstructed SAS (Synthetic Aperture Sonar) images and position errors are analyzed according to the speed of a moving array for understanding its moving effect on the SAS images. In the analysis the spatial frequency domain interpolation algorithm is used. The results show that as the moving speed of the array increases the estimated position error also increases and image distortion gets worse when we do not consider the array motion. However, if the compensated receiver signals considering the array motion are used the position error and image distortion can be eliminated. In conclusion a signal processing scheme which compensates the Doppler effect is necessary especially in the condition where the array speed is over 1 m/s.


Synthetic aperture signal processing;Spatial frequency domain interpolation;Receiver array moving speed;Doppler effect;Estimated source position error


  1. M. Soumekh, Synthetic Aperture Radar Signal Processing with MATLAB Algorithms (John Wiley & Sons, New York, 1999), pp. xv-xxi, pp. 176-261.
  2. G. Franceschetti and R. Lanari, Synthetic Aperture Radar Processing (CRC Press LLC, New York, 1999) pp. 1-37.
  3. M. P. Hayes and P. T. Gough, "Synthetic aperture sonar: a review of current status," IEEE J. Ocean. Eng. 34, 207-224 (2009).
  4. Kongsberg, High Resolution Interferometric Synthetic Aperture Sonar,, 2016.
  5. IxBlue Synthetic Aperture Side-scan Sonar,, 2016.
  6. R. E. Hansen, "Introduction to Synthetic Aperture Sonar," in Sonar Systems, edited by N. Z. Kolev (InTech, Available from:, 2011).
  7. T. O. Saebo, Seafloor depth estimation by means of interferometric synthetic aperture sonar, (Ph. D. Thesis, University of Tromso, 2010).
  8. E. J. Sullivan, "Passive acoustic synthetic aperture processing," IEEE OES Letters 38, 21-24 (2003).
  9. J. A. Fawcett, "Synthetic aperture processing for a towed array and a moving source," J. Acoust. Soc. Am. 94, 2832-2837 (1993).
  10. A. Hyun, A study on motion compensation for synthetic aperture sonar based on sub-aperture (in Korean), (Master thesis, Seoul National University, 2011).
  11. K. Baik and P. L. Marston, "Comparison of synthetic aperture sonar images reconstructed from conventional linear and circular sensor array" (in Korean), Underwater Acoust. Sympo. Suppl, 30, 15(2015).
  12. S. M. Kim, S. H. Byun, and H. T. Choi, "Source localization in a tank with a moving hydrophone array," International Conference on SAS and SAR (2014).
  13. A. Hyun and W. Seong, "Multipath reduction for synthetic aperture sonar interferometry with 2xN array elements," International Conference on SAS and SAR (2014).
  14. S. M. Kim, S. H. Byun, and H. T. Choi, "Development of an active/passive sonar simulator for the estimation of received signals with arbitrarily moving transducers and targets" (in Korean), Proceedings of the Korean Society of Ocean Engineers, (2014).


Grant : 기관목적사업

Supported by : 한국해양과학기술원 부설 선박해양플랜트연구소