Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
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By B. Liu and W. Chang

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One of the difficulties for frequency stepped chirp radar (FSCR) is to resolve the range-Doppler coupling due to relative motion between the radar and the target. Motion compensation is usually adopted to solve the problem in realizing synthetic high range resolution profile (HRRP) for a moving target. For missile-borne FSCR, the range migration of target echo during a coherent processing interval, which is resulted from the high speed motion of missile, is serious and will affect target detection and synthetic high range resolution profile. Therefore, range migration correction and motion compensation are very important for missile-borne FSCR signal processing. In the paper, with the background of terminal guidance anti-ship FSCR seeker, the range alignment is accomplished in frequency domain during the process of real-time digital pulse compression. Then an effective velocity estimation algorithm based on the waveform entropy of the Doppler amplitude spectrum of target echoes is addressed and the velocity estimation accuracy is derived. Finally, the simulation indicates that the new method can estimate the radial velocity accurately and reconstruct the distorted HRRP successfully. In addition, the method has good anti-noise performance and works in the scenario of multi-target with different velocities as well.

B. Liu and W. Chang, "Range Alignment and Motion Compensation for Missile-Borne Frequency Stepped Chirp Radar," Progress In Electromagnetics Research, Vol. 136, 523-542, 2013.

1. Wehner, D. R., High-resolution Radar, Chapter 4-Chapter 5, Artech House, Boston, 1995.

2. Xu, H.-Y., H. Zhang, K. Lu, X.-F. Zeng, "A holly-leaf-shaped monopole antenna with low RCS for UWB application," Progress In Electromagnetics Research, Vol. 117, 35-50, 2011.

3. Park, S.-H., H.-T. Kim, and K.-T. Kim, "Stepped-frequency ISAR motion compensation using particle swarm optimization with an island model," Progress In Electromagnetics Research, Vol. 85, 25-37, 2008.

4. Chua, M. Y. and V. C. Koo, "FPGA-based chirp generator for high resolution UAV SAR," Progress In Electromagnetics Research, Vol. 99, 71-88, 2009.

5. Crowgey, B. R., E. J. Rothwell, L. C. Kempel, and E. L. Mokole, "Comparison of UWB short-pulse and stepped-frequency radar systems for imaging through barriers," Progress In Electromagnetics Research, Vol. 110, 403-419, 2010.

6. Zhai, W. and Y. Zhang, "Application of super-SVA to stepped chirp radar imaging with frequency band gaps between subchirps," Progress In Electromagnetics Research B, Vol. 30, 71-82, 2011.

7. Liu, B. and W. Chang, "A novel range-spread target detection approach for frequency stepped chirp radar," Progress In Electromagnetics Research, Vol. 131, 275-292, 2012.

8. Hao, C., F. Bandiera, J. Yang, D. Orlando, S. Yan, and C. Hou, "Adaptive detection of multiple point-like targets under conic constraints ," Progress In Electromagnetics Research, Vol. 129, 231-250, 2012.

9. Han, S.-K., H.-T. Kim, S.-H. Park, and K.-T. Kim, "Efficient radar target recognition using a combination of range profile and time-frequency analysis ," Progress In Electromagnetics Research, Vol. 108, 131-140, 2010.

10. Fu, J.-S. and W.-L. Yang, "KFD-based multiclass synthetical discriminant analysis for radar HRRP recognition," Journal of Electromagnetic Waves and Applications, Vol. 26, No. 2-3, 169-178, 2012.

11. Zhou, D., X. Shen, and Y. Liu, "Nonlinear subprofile space for radar HRRP recognition," Progress In Electromagnetics Research Letters, Vol. 33, 91-100, 2012.

12. Zhu, F., Q. Zhang, Q. Lei, and Y. Luo, "Reconstruction of moving target's HRRP using sparse frequency-stepped chirp signal," IEEE Sensors Journal, Vol. 11, No. 10, 2327-1334, 2011.

13. Chen, H.-Y., Y.-X. Liu, W.-D. Jiang, and G.-R. Guo, "A new approach for synthesizing the range profile of moving targets via stepped-frequency waveforms," IEEE Geoscience and Remote Sensing Letters, Vol. 3, No. 3, 406-409, 2006.

14. Li, G., H. D. Meng, X. G. Xia, and Y. N. Peng, "Range and velocity estimation of moving targets using multiple stepped-frequency pulse trains," Sensors, Vol. 8, 1343-1350, 2008.

15. Liu, Y. M., H. D. Meng, H. Zhang, and X. Q. Wang, "Motion compensation of moving targets for high range resolution stepped-frequency radar," Sensors, Vol. 8, 3429-3437, 2008.

16. Park, S.-H., J.-I. Park, and K.-T. Kim, "Motion compensation for squint mode spotlight SAR imaging using efficient 2D interpolation," Progress In Electromagnetics Research, Vol. 128, 503-518, 2012.

17. Kirkland, D. M., "An alternative range migration correction algorithm for focusing moving targets," Progress In Electromagnetics Research, Vol. 131, 227-241, 2012.

18. Tao, R., N. Zhang, and Y. Wang, "Analysing and compensating the effects of range and Doppler frequency migrations in linear frequency modulation pulse compression radar," IET Radar Sonar and Navigation, Vol. 5, No. 1, 12-22, 2011.

19. Levanon, N., "Stepped-frequency pulse-train radar signal," IEE Proceedings Radar, Sonar and Navigation, Vol. 149, No. 6, 297-309, 2002.

20. Sun, H. X., Z. Liu, and Y. H. Cao, "Estimation of a high-velocity target's motion parameters for a modulated frequency stepped radar," Journal of Xidian University, Vol. 38, No. 1, 136-141, 2011.

21. Moore, T. A., et al., Use of the GPS aided inertial navigation system in the navy standard missile for the BMDO/Navy LEAP technology demonstration program, Proceedings of ION GPS-95, Palm Springs, CA, September 12-15, 1995.

22. Ma, Y.-B., Velocity compensation in stepped frequency radar, Master's Thesis, Naval Postgraduate School, California, USA, 1995.

23. Calvo-Gallego, J. and F. Pérez-Martínez, "Simple traffic surveillance system based on range-Doppler radar images," Progress In Electromagnetics Research, Vol. 125, 343-364, 2012.

24. Stimson, G. W., Introduction to Airborne Radar, 2nd Ed., Ch. 15, SciTech Publishing, Inc., Raleigh, 1998.

25. Tian, B., D.-Y. Zhu, and Z.-D. Zhu, "A novel moving target detection approach for dual-channel SAR system," Progress In Electromagnetics Research, Vol. 115, 191-206, 2011.

26. Martyushev, L. M. and V. D. Seleznev, "Maximum entropy production principle in physics, chemistry and biology," Physics Reports, Vol. 426, 1-10, 2006.

27. Xi, L., "Auto focusing of ISAR images based on entropy minimization," IEEE Trans. on Aerospace Electron. Syst., Vol. 35, No. 4, 1240-1252, 1999.

28. Jing, L., L. X. Guo, and W.Wu, "Application of waveform entropy method for motion compensation to MMW costas frequency hopped radar ," Journal of Infrared and Millimeter Wave, Vol. 22, No. 4, 303-306, 2003.

29. Xu, S., P. Shui, and X. Yan, "CFAR detection of range-spread target in white Gaussian noise using waveform entropy," Electronics Letters, Vol. 46, No. 9, 647-649, 2010.

30. Zhang, Z.-B., X.-Y. Du, and W.-D. Hu, "Waveform entropy-based target detection in HRRPs," Aeronautical Computing Technique, Vol. 37, No. 6, 51-54, 2007.

31. Zhang, J.-P., Z.-S. Wu, Y.-S. Zhang, and B. Wang, "Evaporation duct retrieval using changes in radar sea clutter power versus receiving height," Progress In Electromagnetics Research, Vol. 126, 555-571, 2012.

32. Wu, Z.-S., J.-P. Zhang, L.-X. Guo, and P. Zhou, "An improved two-scale model with volume scattering for the dynamic ocean surface," Progress In Electromagnetics Research, Vol. 89, 39-56, 2009.

33. Luo, W., M. Zhang, C. Wang, and H.-C. Yin, "Investigation of low-grazing-angle microwave backscattering from three-dimensional breaking sea waves," Progress In Electromagnetics Research, Vol. 119, 279-298, 2011.

34. Qi, C., Z. Zhao, W. Yang, Z.-P. Nie, and G. Chen, "Electromagnetic scattering and doppler analysis of three-dimensional breaking wave crests at low-grazing angles," Progress In Electromagnetics Research, Vol. 119, 239-252, 2011.

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