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Airborne Downward Looking Sparse Linear Array 3-D SAR Heterogeneous Parallel Simulation
Science and Technology on Microwave Imaging Laboratory (MITL), Institute of Electronics, Chinese Academy of Sciences (IECAS), No. 19, North 4th Ring West, Beijing 100190, China
University of Chinese Academy of Sciences, No. 19A Yuquanlu, Beijing 100049, China
* Author to whom correspondence should be addressed.
Received: 22 August 2013; in revised form: 9 October 2013 / Accepted: 14 October 2013 / Published: 22 October 2013
Abstract: The airborne downward looking sparse linear array three dimensional synthetic aperture radar (DLSLA 3-D SAR) operates nadir observation with the along-track synthetic aperture formulated by platform movement and the cross-track synthetic aperture formulated by physical sparse linear array. Considering the lack of DLSLA 3-D SAR data in the current preliminary study stage, it is very important and essential to develop DLSLA 3-D SAR simulation (echo generation simulation and image reconstruction simulation, including point targets simulation and 3-D distributed scene simulation). In this paper, DLSLA 3-D SAR imaging geometry, the echo signal model and the heterogeneous parallel technique are discussed first. Then, heterogeneous parallel echo generation simulation with time domain correlation and the frequency domain correlation method is described. In the following, heterogeneous parallel image reconstruction simulation with two imaging algorithms, e.g., 3-D polar format algorithm, polar formatting and L1 regularization algorithm is discussed. Finally, the point targets and the 3-D distributed scene simulation are demonstrated to validate the effectiveness and performance of our proposed heterogeneous parallel simulation technique. The 3-D distributed scene employs airborne X-band DEM and P-band Circular SAR image of the same area as simulation scene input.
Keywords: airborne downward looking sparse linear array 3-D SAR; heterogeneous parallel; echo generation; time domain correlation; frequency domain correlation; image reconstruction; polar formatting; L1 regularization
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Cite This Article
MDPI and ACS Style
Peng, X.; Wang, Y.; Hong, W.; Tan, W.; Wu, Y. Airborne Downward Looking Sparse Linear Array 3-D SAR Heterogeneous Parallel Simulation. Remote Sens. 2013, 5, 5304-5329.
Peng X, Wang Y, Hong W, Tan W, Wu Y. Airborne Downward Looking Sparse Linear Array 3-D SAR Heterogeneous Parallel Simulation. Remote Sensing. 2013; 5(10):5304-5329.
Peng, Xueming; Wang, Yanping; Hong, Wen; Tan, Weixian; Wu, Yirong. 2013. "Airborne Downward Looking Sparse Linear Array 3-D SAR Heterogeneous Parallel Simulation." Remote Sens. 5, no. 10: 5304-5329.