A Moving-targets Detection Algorithm for Spaceborne SAR System Based on Two-dimensional Velocity Search Method

He YAN; Jue WANG; Jia HUANG; Xudong WANG

doi:10.11999/JEIT180663

Volume 41 Issue 6

Jun. 2019

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Article Navigation > Journal of Electronics & Information Technology > 2019 > 41(6): 1287-1293

He YAN, Jue WANG, Jia HUANG, Xudong WANG. A Moving-targets Detection Algorithm for Spaceborne SAR System Based on Two-dimensional Velocity Search Method[J]. Journal of Electronics & Information Technology, 2019, 41(6): 1287-1293. doi: 10.11999/JEIT180663

Citation:

He YAN, Jue WANG, Jia HUANG, Xudong WANG. A Moving-targets Detection Algorithm for Spaceborne SAR System Based on Two-dimensional Velocity Search Method[J]. Journal of Electronics & Information Technology, 2019, 41(6): 1287-1293. doi: 10.11999/JEIT180663

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A Moving-targets Detection Algorithm for Spaceborne SAR System Based on Two-dimensional Velocity Search Method

doi: 10.11999/JEIT180663

College of Electronic Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210000, China

Funds: The National Natural Science Foundation of China (61501231), The Civil Aerospace 13th Five-year Background Model Pre-research Project (D010102), The China Postdoctoral Science Foundation (2018M630556)

Received Date: 2018-07-05
Rev Recd Date: 2019-01-20

Available Online: 2019-02-14

Publish Date: 2019-06-01

Abstract

Abstract

The moving target component is often defocused in spaceborne SAR images. Therefore, the moving target detection performance is affected depending on the degree of defocusing. Combined with the RD algorithm, a moving-targets detection algorithm for spaceborne SAR based on a two-dimensional velocity search is proposed. Through velocity search on the distance direction and the azimuth direction, the Doppler parameters of possible moving targets can be matched. Then the strongest value among all the searching velocity results for each pixel is used for Constant False Alarm Rate(CFAR) detector. This core process can improve the detection performance of moving target component. Simulation results validate the effectiveness of the proposed method.
- Synthetic Aperture Radar(SAR),
- Moving target detection,
- RD algorithm,
- Velocity search

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References(15)

References

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