• Acta Optica Sinica
  • Vol. 39, Issue 9, 0928002 (2019)
Hongfei Yin1, Liang Guo1、2、*, Lichao Yang3, Guangcai Sun3, Mengdao Xing3, and Xiaodong Zeng1
Author Affiliations
  • 1 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an, Shaanxi 710071, China
  • 2 State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Hefei, Anhui 230037, China
  • 3 National Key Laboratory of Radar Signal Processing, Xidian University, Xi'an, Shaanxi 710071, China
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    DOI: 10.3788/AOS201939.0928002 Cite this Article Set citation alerts
    Hongfei Yin, Liang Guo, Lichao Yang, Guangcai Sun, Mengdao Xing, Xiaodong Zeng. Full Aperture Imaging Algorithm of Airborne Synthetic Aperture Ladar[J]. Acta Optica Sinica, 2019, 39(9): 0928002 Copy Citation Text show less

    Abstract

    Synthetic aperture ladar (SAL) is a combination of synthetic aperture and ladar, which has developed rapidly in recent years. Since the wavelength of the SAL is short, high-resolution imaging can be achieved in a short period of time. However, short wavelength also brings other problems. For airborne SAL, the wavelength is less than the vibration amplitude of the airplane by 1-2 order of magnitude, and the vibration of the airplane results in a great phase error to the echo. It is difficult for the inertial navigation system (INS) to achieve the positioning accuracy at the laser wavelength level, so the data-based self-focusing is necessary in SAL imaging. In this paper, a full aperture imaging algorithm based on minimum entropy autofocus (MEA) and deramp is proposed to process the SAL real data. The imaging results verify the effectiveness of the proposed algorithm.
    Hongfei Yin, Liang Guo, Lichao Yang, Guangcai Sun, Mengdao Xing, Xiaodong Zeng. Full Aperture Imaging Algorithm of Airborne Synthetic Aperture Ladar[J]. Acta Optica Sinica, 2019, 39(9): 0928002
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