Author:
Wu Ke,Jin Guowang,Xiong Xin,Zhang Hongmin,Wang Limei
Abstract
We present a novel echo-based synthetic aperture radar (SAR) image simulation method that comprehensively utilizes both SAR effective view and ray tracing algorithms. To improve the fidelity of simulated SAR images, we first design an SAR effective view algorithm to process the selected facet target model, with the purpose of discretizing the facets in the SAR effective view into lattice targets and ensuring that the interval of lattice targets is set strictly following the Nyquist sampling law. Then, we combine the ray tracing algorithm and SAR echo time-domain simulation and perform SAR echo time-domain simulation of lattice targets based on ray tracing. Various kinds of backscatter coefficient for each point target can be recorded, corresponding to the number of transmitted pulses within the synthetic aperture time. The echo matrixes of lattice targets are superimposed to generate the raw echo signal. Finally, the raw echo signal is processed by using the range-Doppler (RD) imaging algorithm to obtain the simulated SAR image. We conducted SAR image simulation tests on several facet target models, including car body, assault boat, and airplane, with different material properties. The simulated SAR images obtained by the proposed method were qualitatively and quantitatively evaluated. The experimental results verify the effectiveness of the proposed method.
Funder
National Natural Science Foundation of China under Grants
Subject
General Earth and Planetary Sciences
Reference36 articles.
1. Radar image simulation;IEEE Trans. Geosci. Electron.,1978
2. Chen, K.S. (2015). Principles of Synthetic Aperture Radar Imaging: A System Simulation Approach, CRC Press.
3. Synthetic aperture radar;IEEE Trans. Aerosp. Electron. Syst.,1967
4. SARAS: A synthetic aperture radar (SAR) raw signal simulator;IEEE Trans. Geosci. Remote Sens.,1992
5. Franceschetti, G., Marino, R., Migliaccio, M., and Riccio, D. (1994, January 26–30). SAR simulation of three-dimensional scenes. Proceedings of the Satellite Remote Sensing: SAR Data Processing for Remote Sensing, Rome, Italy.
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献