Raw Data-Based Motion Compensation for High-Resolution Sliding Spotlight Synthetic Aperture Radar
Abstract
:1. Introduction
2. Related Works
2.1. Properties of Sliding Spotlight Mode
2.2. RDM Approach for Stripmap Mode
3. Proposed IRDM Approach for Sliding Spotlight SAR
3.1. Problems Statement
3.2. IRDM Approach
4. Results and Analysis
4.1. Example 1: Land Surface Scene
4.2. Example 2: Coastal Zone
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Parameters | Value | Parameters | Value |
---|---|---|---|
Carrier frequency | 5.4 GHz | Central look angle | 54° |
System PRF | 2000 Hz | Average speed | 135 m/s |
Antenna length | 0.624 m | Acquisition interval | 42.48 s |
Pulse Bandwidth | 200 MHz | Maximum steering angle | ±6.4° |
Sampling frequency | 266.7 MHz | Squint angle | −1.2° |
Method | IC | IE |
---|---|---|
Without MOCO | 0.6435 | 13.5625 |
Range-varying PGA | 0.8111 | 13.3077 |
Stripmap RDM + Range-varying PGA | 0.8453 | 13.2287 |
Sliding spotlight RDM without WTLS + Range-varying PGA | 0.8504 | 13.1893 |
Sliding spotlight RDM with WTLS + Range-varying PGA | 0.8647 | 13.1597 |
Method | IC | IE |
---|---|---|
Without MOCO | 0.6664 | 13.8767 |
Range-varying PGA | 0.8447 | 13.3145 |
Stripmap RDM + Range-varying PGA | 0.8619 | 13.2037 |
Sliding spotlight RDM without WTLS + Range-varying PGA | 0.8982 | 13.1880 |
Sliding spotlight RDM with WTLS + Range-varying PGA | 0.9191 | 13.0849 |
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Li, N.; Niu, S.; Guo, Z.; Liu, Y.; Chen, J. Raw Data-Based Motion Compensation for High-Resolution Sliding Spotlight Synthetic Aperture Radar. Sensors 2018, 18, 842. https://doi.org/10.3390/s18030842
Li N, Niu S, Guo Z, Liu Y, Chen J. Raw Data-Based Motion Compensation for High-Resolution Sliding Spotlight Synthetic Aperture Radar. Sensors. 2018; 18(3):842. https://doi.org/10.3390/s18030842
Chicago/Turabian StyleLi, Ning, Shilin Niu, Zhengwei Guo, Yabo Liu, and Jiaqi Chen. 2018. "Raw Data-Based Motion Compensation for High-Resolution Sliding Spotlight Synthetic Aperture Radar" Sensors 18, no. 3: 842. https://doi.org/10.3390/s18030842