© The Institution of Engineering and Technology
The amount of radar's raw echo data is usually very large. At the same time, synthetic aperture radar (SAR) imaging system needs rapid transpose efficiency to improve the realtime performance of the system. Therefore, modern realtime SAR system requires highspeed and largecapacity devices which are usually SDRAM chips to store raw echo data and to solve the corner turning problem by efficient matrix transpose method. By designing data interleaved patterns and controlling command cycles of SDRAM chips in a reasonable way, this paper presents a novel matrix transpose method which can be used to improve the efficiency of corner turning memory (CTM) for realtime SAR imaging system. After boardlevel verification, the efficiency of this new matrix transpose method can be greatly improved to >99%, which is greater than other typical SDRAMbased CTM design methods and is more suitable for realtime SAR imaging system.
References


1)

1. Jia, G.W., Buchroithner, M.F., Chang, W.G., et al: ‘Fourierbased 2D imaging algorithm for circular synthetic aperture radar: analysis and application’, IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens., 2016, 9, (1), pp. 475–489.

2)

2. Zhang, L., Wang, G.Y., Qiao, Z.J., et al: ‘Twostage focusing algorithm for highly squinted synthetic aperture radar imaging’, IEEE Trans. Geosci. Remote Sens., 2017, 55, (10), pp. 5547–5562.

3)

3. Bacci, A., Staglianò, D., Giusti, E., et al: ‘Compressive sensing for interferometric inverse synthetic aperture radar applications’, IET Radar Sonar Navig., 2016, 10, (8), pp. 1446–1457.

4)

4. Lee, Y.C., Koo, V.C., Chan, Y.K.: ‘Design and development of FPGAbased FFT coprocessor for synthetic aperture radar (SAR)’. 2017 Progress in Electromagnetics Research Symp. – Fall (PIERS – FALL), Singapore, 2017, pp. 1760–1766.

5)

5. Chen, S., Yuan, Y., Zhang, S.N., et al: ‘A new imaging algorithm for forwardlooking missileborne bistatic SAR’, IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens., 2016, 9, (4), pp. 1543–1552.

6)

6. Chen, B.X., Yang, M.L., Wang, Y., et al: ‘The applications and future of synthetic impulse and aperture radar’. 2016 CIE Int. Conf. on Radar (RADAR), Guangzhou, 2016, pp. 1–5.

7)

7. Cumming, I.G., Wong, F.H.: ‘Digital processing of synthetic aperture radar data algorithms and implementation’ (Publishing House of Electronics Industry Press, Boston, London, 2012).

8)

8. Lutomirski, A., Tegmark, M., Sanchez, N.J., et al: ‘Solving the cornerturning problem for large interferometers’, Mon. Not. R. Astron. Soc., 2011, 410, (3), pp. 2075–2080.

9)

9. Liu, Y., Xie, Y.Z., Huang, X.B.: ‘Implementation of parallel interface and matrix transpose for SAR imaging based on Virtex6 FPGA’. IET Int. Radar Conf. 2013, Xi'an, 2013, pp. 1–4.

10)

10. Bao, Z., Xing, M.D., Wang, T.: ‘Radar imaging technology’ (Publishing House of Electronics Industry Press, Beijing, China, 2014).

11)

11. Ren, G., Han, J.Z., Han, C.D.: ‘CTM on multiprocessor: solution for bottleneck of SAR’. 2000 5th Int. Conf. on Signal Processing Proc., 16th World Computer Congress 2000, Beijing, 2000, pp. 1915–1920.

12)

12. Lu, S.X., Han, S., Wang, Y.F.: ‘The structure and implementation of the twoframe corner turn memory (CTM) in real time imaging of SAR’, J. Electron. Inf. Technol., 2005, 27, (8), pp. 1226–1228.

13)

13. Xie, Y.K., Zhang, T., Han, C.D.: ‘Design and implementation of matrix transposition unit for realtime SAR image systems’, J. Comput. Res. Dev., 2003, 40, (1), pp. 6–11.

14)

14. Bao, S.G., Zhou, H.B.: ‘Study and implementation of high efficient matrix transpose for SAR realtime imaging system’, Mod. Rad., 2013, 35, (3), pp. 24–27.

15)

15. Lin, T., Xie, Y.Z., Liu, W.: ‘Implementation of matrix inplace transpose for realtime SAR imaging system’, Comput. Eng., 2013, 39, (6), pp. 319–321.

16)

16. Bian, M.M., Bi, F.K., Wang, J.H.: ‘Research and implementation of matrix transpose for realtime SAR imaging system’, Comput. Eng. Applic., 2011, 47, (22), pp. 117–119.

17)

17. Liu, X.N., Chen, H., Xie, Y.Z.: ‘Research and implementation of CTM for realtime SAR imaging processing’. IET Int. Radar Conf., Xi'an, 2013, pp. 1–4.

18)

18. Bian, M.M., Bi, F.K., Liu, F.: ‘Matrix transpose methods for SAR imaging system’. IEEE 10th Int. Conf. on Signal Processing Proc., Beijing, 2010, pp. 2176–2179.

19)

19. Lei, K., Wei, G.: ‘Design and implementation of matrix transpose based on SMP system’. IET Int. Radar Conf. 2015, Hangzhou, 2015, pp. 1–5.

20)
http://iet.metastore.ingenta.com/content/journals/10.1049/ietcds.2018.5037
Related content
content/journals/10.1049/ietcds.2018.5037
pub_keyword,iet_inspecKeyword,pub_concept
6
6