© The Institution of Engineering and Technology
For detection of target submerged in the spread Doppler spectrum of the first-order sea clutter in shipborne high-frequency surface-wave radar (HFSWR), there still remains a challenge. In this study, an improved orthogonal weighting (OW) algorithm is proposed for shipborne HFSWR to suppress sea clutter in both Doppler domain and spatial domain. By combining OW with the method of sea clutter suppression in Doppler domain, the performance of azimuth estimation of OW is thus preserved. Compared with OW and two-dimensional fast Fourier transform plus digital beamforming, this new approach is verified to be more effective by simulations and real data.
References
-
-
1)
-
20. Xie, J., Sun, M., Cai, W.: ‘Second-order ocean surface cross section for shipborne HFSWR’, IEEE Antennas Wirel. Propag., 2014, 14, pp. 823–826.
-
2)
-
1. Bruno, L., Braca, P., Horstmann, J., et al: ‘Experimental evaluation of the range-Doppler coupling on HF surface wave radars’, IEEE Geosci. Remote Sens. Lett., 2013, 10, (4), pp. 850–854 (doi: 10.1109/LGRS.2012.2226203).
-
3)
-
5. Grosdidier, S., Baussard, A., Khenchaf, A.: ‘HFSW radar model: simulation and measurement’, IEEE Trans. Geosci. Remote Sens., 2010, 48, (9), pp. 3539–3549 (doi: 10.1109/TGRS.2010.2047022).
-
4)
-
12. Li, Y., Lv, X., Liu, K., et al: ‘Fractal-based weak target detection within sea clutter’, Acta Ocean. Sinica, 2014, 33, (9), pp. 68–72 (doi: 10.1007/s13131-014-0519-1).
-
5)
-
4. Xie, J., Yuan, Y., Liu, Y.: ‘Super-resolution processing for HF surface wave radar based on pre-whitened MUSIC’, IEEE J. Ocean. Eng., 1998, 23, (4), pp. 313–321 (doi: 10.1109/48.725227).
-
6)
-
9. Zhou, H., Wen, B.: ‘Radio frequency interference suppression in small-aperture high-frequency radars’, IEEE Geosci. Remote Sens. Lett., 2012, 9, (4), pp. 788–792 (doi: 10.1109/LGRS.2011.2181817).
-
7)
-
2. Xie, J., Yuan, Y., Liu, Y.: ‘Experimental analysis of sea clutter in shipborne HFSWR’, IEE Proc. Radar Sonar Navig., 2001, 148, (2), pp. 67–71 (doi: 10.1049/ip-rsn:20010135).
-
8)
-
16. Gao, X., Zong, C.: ‘Ship target detection for HF groundwave shipborne OTH radar’, IEE Proc. Radar Sonar Navig., 1999, 146, (6), pp. 305–311 (doi: 10.1049/ip-rsn:19990571).
-
9)
-
14. Shui, P., Li, D., Xu, S.: ‘Tri-feature-based detection of floating small targets in sea clutter’, IEEE Trans. Aerosp. Electron. Syst., 2014, 50, (2), pp. 1416–1430 (doi: 10.1109/TAES.2014.120657).
-
10)
-
6. Maresca, S., Braca, P., Horstmann, J., et al: ‘Maritime surveillance using multiple high-frequency surface-wave radars’, IEEE Trans. Geosci. Remote Sens., 2014, 52, (8), pp. 5056–5071 (doi: 10.1109/TGRS.2013.2286741).
-
11)
-
10. Wang, W., Wyatt, L.: ‘Generalised noise cancellation method for wave estimation by HF surface wave radar’, IET Radar Sonar Navig., 2014, 8, (6), pp. 622–631 (doi: 10.1049/iet-rsn.2012.0328).
-
12)
-
8. Wang, W., Wyatt, L.: ‘Radio frequency interference cancellation for sea-state remote sensing by high-frequency radar’, IET Radar Sonar Navig., 2011, 5, (4), pp. 405–415 (doi: 10.1049/iet-rsn.2010.0041).
-
13)
-
11. Ghahramani, H., Barari, M., Bastani, M.: ‘Maritime radar target detection in presence of strong sea clutter based on blind source separation’, IETE J. Res., 2014, 60, (5), pp. 1–14 (doi: 10.1080/03772063.2014.961573).
-
14)
-
18. Yuan, Y., Ye, L.: ‘Analysis of sea clutter in distributed shipborne OTH radar’. IET. Int. Conf. Radar, Guilin, China, April 2009, pp. 1–6.
-
15)
-
16. Zhang, X., Sheng, W., Liu, S.: ‘Suppression of sea clutter of skywave radar based on AR model’, Appl. Mech. Mater., 2013, 239, pp. 382–386 (doi: 10.4028/www.scientific.net/AMM.411-414.382).
-
16)
-
27. Adve, R., Hale, T., Wicks, M.: ‘Practical joint domain localised adaptive processing in homogeneous and nonhomogeneous environments. I. homogeneous environments’, IEE Proc. Radar Sonar Navig., 2000, 147, (2), pp. 57–65 (doi: 10.1049/ip-rsn:20000035).
-
17)
-
3. Yasotharan, A., Thayaparan, T.: ‘Time–frequency method for detecting an accelerating target in sea clutter’, IEEE Trans. Aerosp. Electron. Syst., 2006, 42, (4), pp. 1289–1310 (doi: 10.1109/TAES.2006.314573).
-
18)
-
25. Sun, M., Xie, J., Hao, Z., et al: ‘Target detection and estimation for shipborne HFSWR based on oblique projection’. Proc. Int. Conf. Signal Processing, Beijing, China, October 2012, pp. 386–389.
-
19)
-
17. Xie, J., Yuan, Y., Liu, Y.: ‘Suppression of sea clutter with orthogonal weighted for target detection in shipborne HFSWR’, IEE Proc. Radar Sonar Navig., 2002, 149, (1), pp. 39–44 (doi: 10.1049/ip-rsn:20020085).
-
20)
-
15. Xue, W., Zhu, K., Liu, F.: ‘A sea clutter suppression algorithm by statistics estimation and subspace method’. Proc. Int. Conf. Electric Information and Control Engineering, Washington, USA, April 2012, pp. 199–202.
-
21)
-
13. Li, Y., Wei, Y., Xu, R., et al: ‘Space-time characteristics and experimental analysis of broadening first-order sea clutter in HF hybrid sky-surface wave radar’, Radio Eng., 2014, 23, (3), pp. 831–841.
-
22)
-
24. Gupta, A., Fickenscher, T.: ‘Sea clutter canceller for shipborne HF surface wave radar’. Proc. Int. ITG Workshop Smart Antennas (WSA), Aachen, Germany, February 2011, pp. 1–4.
-
23)
-
23. Lesturgie, M.: ‘Use of STAP techniques to enhance the detection of slow targets in shipborne HFSWR’. Proc. Int. Conf. Radar, Australia, September 2003, pp. 504–509.
-
24)
-
2. Stankovic, L., Thayaparan, T., Dakovic, M., et al: ‘Signal decomposition by using the S-method with application to the analysis of HF radar signals in sea-clutter’, IEEE Trans. Signal Process., 2006, 54, (11), pp. 4332–4342 (doi: 10.1109/TSP.2006.880248).
-
25)
-
7. Gurgel, K., Barbin, Y., Schlick, T.: ‘Radio frequency interference suppression techniques in FMCW modulated HF radars’. OCEANS 2007-Europe, Aberdeen, Scotland, June 2007, pp. 1–4.
-
26)
-
26. Ji, Z., Yi, C., Xie, J., et al: ‘The application of JDL to suppress sea clutter for shipborne HFSWR’, Int. J. Antennas Propag., 2015, 2015, pp. 1–6 (doi: 10.1155/2015/825350).
-
27)
-
19. Xie, J., Sun, M., Ji, Z.: ‘First-order ocean surface cross-section for shipborne HFSWR’, Electron. Lett., 2013, 49, (16), pp. 1025–1026 (doi: 10.1049/el.2013.1393).
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