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2013-07-23
Efficient Strip-Mode SAR Raw Data Simulator of Extended Scenes Included Moving Targets
By
Progress In Electromagnetics Research B, Vol. 53, 187-203, 2013
Abstract
An accurate and efficient SAR raw data generator is of considerable value for testing system parameters and the imaging algorithms. However, most of the existing simulators concentrate on the raw signal simulation of the static extended scenes and targets. Actually the raw signal simulator of the moving targets is highly desired to quantitatively support the application of the ground moving targets indication. The raw data simulation can be exactly realized in the time domain but not efficient especially when simulating an extended scene. As for the issues, the analytical expression for the 2-D signal spectrum of moving targets with constant acceleration is derived and a fast raw data simulation method in the 2-D frequency domain based on inverse ω-k algorithm is proposed in this paper, where the inverse STOLT interpolation is applied to simulate the range-azimuth couple. So it is more efficient than the time domain one by making use of Fast Fourier Transform (FFT). Simulation results for a man-made scene and a real SAR scene are provided to demonstrate its validity and effectiveness.
Citation
Liang Yang, Weidong Yu, Yun-Hua Luo, and Shichao Zheng, "Efficient Strip-Mode SAR Raw Data Simulator of Extended Scenes Included Moving Targets," Progress In Electromagnetics Research B, Vol. 53, 187-203, 2013.
doi:10.2528/PIERB13050205
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