Open Access
ARTICLE
Efficient Strip-Mode SAR Raw-Data Simulator of Extended Scenes Included Moving Targets Based on Reversion of Series
Liang Yang1, *, Daojian Zeng2, Jianhua Yan3, Yaozhang Sai1
1 School of Information and Electrical Engineering, Ludong University, Yantai, 264025, China.
2 Changsha University of Science & Technology, Changsha, 410004, China.
3 Mathematics Department, Florida Atlantic University, Florida, 33431, USA.
* Corresponding Author: Liang Yang. Email: .
Computers, Materials & Continua 2020, 64(1), 313-323. https://doi.org/10.32604/cmc.2020.09809
Received 20 January 2020; Accepted 08 March 2020; Issue published 20 May 2020
Abstract
The Synthetic Aperture Radar (SAR) raw data generator is required to the
evaluation of focusing algorithms, moving target analysis, and hardware design. The
time-domain SAR simulator can generate the accurate raw data but it needs much time.
The frequency-domain simulator not only increases the efficiency but also considers the
trajectory deviations of the radar. In addition, the raw signal of the extended scene
included static and moving targets can be generated by some frequency-domain
simulators. However, the existing simulators concentrate on the raw signal simulation of
the static extended scene and moving targets at uniform speed mostly. As for the issue,
the two-dimensional signal spectrum of moving targets with constant acceleration can be
derived accurately based on the geometric model of a side-looking SAR and reversion of
series. And a frequency-domain algorithm for SAR echo signal simulation is presented
based on the two-dimensional signal spectrum. The raw data generated with proposed
method is verified by several simulation experiments. In addition to reveal the efficiency
of the presented frequency-domain SAR scene simulator, the computational complexity
of the proposed method is compared with the time-domain approach using the complex
multiplication. Numerical results demonstrate that the present method can reduce the
computational time significantly without accuracy loss while simulating SAR raw data.
Keywords
Cite This Article
L. Yang, D. Zeng, J. Yan and Y. Sai, "Efficient strip-mode sar raw-data simulator of extended scenes included moving targets based on reversion of series,"
Computers, Materials & Continua, vol. 64, no.1, pp. 313–323, 2020.