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The Doppler spectrum modeling of the sea clutter is of great significance for using the Doppler radar to suppress the sea clutter and detect the target on sea surface. Taking into account the characteristics of the Doppler spectrum components corresponding to three scattering mechanisms, the Bragg, whitecap, and breaking-wave, we propose a time-varying Doppler spectrum model of radar sea clutter in this paper. The Doppler spectrum shifts and bandwidths of the three scattering mechanisms are considered respectively, and a Doppler shift of an added wave speed is introduced into this model. Because the spectrum intensity is defined as a random variable being a function of the measuring time of the sea clutter series, the model has the ability to model both the long-time averaged Doppler spectra and the short-time Doppler spectra. By modeling the short-time Doppler spectra and the long-time averaged Doppler spectra of the shore-based radar sea clutter measured in the China Yellow Sea at P and S bands, it is indicated that the proposed model has a higher precision than the conventional model, and especially, the modeling errors decrease significantly in the cases of the short-time Doppler spectra with long measuring time and the long-time averaged Doppler spectra with complex shapes.
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Keywords:
- radar sea clutter /
- Doppler spectrum /
- modeling method
[1] Ward K D, Watts S 2010 IET Radar, Sonar Navig. 4 146
[2] Li D C, Shui P L 2016 IET Radar, Sonar Navig. 10 699
[3] Rosenberg L, Watts S 2017 IET Radar, Sonar Navig. 11 1340
[4] Pidgeon V W 1968 J. Geophys. Res. 73 1333
[5] Lee P H Y, Barter J D, Beach K L 1995 IEE Proc. Radar, Sonar Navig. 142 252
[6] Walker D 2000 IEE Proc. Radar, Sonar Navig. 147 114
[7] Rosenberg L 2014 IEEE T. Aero. Elec. Sys. 50 406
[8] Watts S, Rosenberg L, Bocquet S 2016 IET Radar, Sonar Navig. 10 24
[9] Watts S, Rosenberg L, Bocquet S 2016 IET Radar, Sonar Navig. 10 32
[10] Corretja V, Meslot V, Kemkemian S, Montigny R 2017 Proceedings of the IEEE Radar Conference Seattle, WA, USA, May 8-12, 2017 p1046
[11] Watts S, McDonald M, Rosenberg L 2015 Proceedings of the IEEE Radar Conference Johannesburg, South Africa, October 2730, 2015 p91
[12] Jiang W Z, Yuan Y L, Wang Y H, Zhang Y M 2012 Acta Phys. Sin. 61 124213 (in Chinese) [姜文正, 袁业立, 王运华, 张彦敏 2012 物理学报 61 124213]
[13] Walker D 2001 IEE Proc. Radar, Sonar Navig. 148 73
[14] Watts S 2012 IEEE T. Aero. Elec. Sys. 48 3303
[15] Miller R J, Dawber W N 2002 Proceedings of the International Radar Conference Edinburgh, UK, October 15-17, 2002 p444
[16] Ward K D, Tough R J A, Watts S 2013 Sea Clutter: Scattering, the K Distribution and Radar Performance (2nd Ed.) (London: The Institution of Engineering and Technology)
[17] Raynal A M, Doerry A W 2010 Doppler Characteristics of Sea Clutter (New Mexico: Sandia National Laboratories)
[18] Duncan J R, Keller W C, Wright J W 1974 Radio Sci. 9 809
[19] Plant W J, Keller W C 1990 J. Geophys. Res. 95 16299
[20] Zhang Y M, Wang Y H, Zhao C F 2010 Chin. Phys. B 19 084103
[21] Zhang Y S, Zhang J P, Li X, Wu Z S 2014 Chin. Phys. B 23 108402
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[1] Ward K D, Watts S 2010 IET Radar, Sonar Navig. 4 146
[2] Li D C, Shui P L 2016 IET Radar, Sonar Navig. 10 699
[3] Rosenberg L, Watts S 2017 IET Radar, Sonar Navig. 11 1340
[4] Pidgeon V W 1968 J. Geophys. Res. 73 1333
[5] Lee P H Y, Barter J D, Beach K L 1995 IEE Proc. Radar, Sonar Navig. 142 252
[6] Walker D 2000 IEE Proc. Radar, Sonar Navig. 147 114
[7] Rosenberg L 2014 IEEE T. Aero. Elec. Sys. 50 406
[8] Watts S, Rosenberg L, Bocquet S 2016 IET Radar, Sonar Navig. 10 24
[9] Watts S, Rosenberg L, Bocquet S 2016 IET Radar, Sonar Navig. 10 32
[10] Corretja V, Meslot V, Kemkemian S, Montigny R 2017 Proceedings of the IEEE Radar Conference Seattle, WA, USA, May 8-12, 2017 p1046
[11] Watts S, McDonald M, Rosenberg L 2015 Proceedings of the IEEE Radar Conference Johannesburg, South Africa, October 2730, 2015 p91
[12] Jiang W Z, Yuan Y L, Wang Y H, Zhang Y M 2012 Acta Phys. Sin. 61 124213 (in Chinese) [姜文正, 袁业立, 王运华, 张彦敏 2012 物理学报 61 124213]
[13] Walker D 2001 IEE Proc. Radar, Sonar Navig. 148 73
[14] Watts S 2012 IEEE T. Aero. Elec. Sys. 48 3303
[15] Miller R J, Dawber W N 2002 Proceedings of the International Radar Conference Edinburgh, UK, October 15-17, 2002 p444
[16] Ward K D, Tough R J A, Watts S 2013 Sea Clutter: Scattering, the K Distribution and Radar Performance (2nd Ed.) (London: The Institution of Engineering and Technology)
[17] Raynal A M, Doerry A W 2010 Doppler Characteristics of Sea Clutter (New Mexico: Sandia National Laboratories)
[18] Duncan J R, Keller W C, Wright J W 1974 Radio Sci. 9 809
[19] Plant W J, Keller W C 1990 J. Geophys. Res. 95 16299
[20] Zhang Y M, Wang Y H, Zhao C F 2010 Chin. Phys. B 19 084103
[21] Zhang Y S, Zhang J P, Li X, Wu Z S 2014 Chin. Phys. B 23 108402
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