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短相干积累条件下天波超视距雷达的舰船检测

郭欣 倪晋麟 刘国岁

郭欣, 倪晋麟, 刘国岁. 短相干积累条件下天波超视距雷达的舰船检测[J]. 电子与信息学报, 2004, 26(4): 613-618.
引用本文: 郭欣, 倪晋麟, 刘国岁. 短相干积累条件下天波超视距雷达的舰船检测[J]. 电子与信息学报, 2004, 26(4): 613-618.
Guo Xin, Ni Jin-lin, Liu Guo-sui. The Ship Detection of Sky Wave over-the-Horizon Radar with Short Coherent Integration Time[J]. Journal of Electronics & Information Technology, 2004, 26(4): 613-618.
Citation: Guo Xin, Ni Jin-lin, Liu Guo-sui. The Ship Detection of Sky Wave over-the-Horizon Radar with Short Coherent Integration Time[J]. Journal of Electronics & Information Technology, 2004, 26(4): 613-618.

短相干积累条件下天波超视距雷达的舰船检测

The Ship Detection of Sky Wave over-the-Horizon Radar with Short Coherent Integration Time

  • 摘要: 天波超视距雷达(OTHR)的观测范围非常广,实战中经常要求在短相干积累条件下检测出舰船目标。然而短相干积累时间带来的低多普勒分辨率很难从强大的海杂波中区分出舰船。为了解决这一问题。可以采用海杂波循环对消法,这就要求对杂波参数进行精确估计。传统方法直接利用Fourier谱中的最大幅度估计杂波参数,估计精度不高从而导致对消性能不太理想。该文提出了一种新的基于FFT相位分析的杂波对消法。该方法与传统的杂波对消相比,有效提高了参数估计精度,减小了剩余杂波强度和扩散程度,有利于舰船目标的峰值显露和从剩余杂波中区分出舰船。以上分析和比较得到了实测数据的检验。
  • Root B T. HF over-the-horizon radar ship detection with short dwells using clutter cancellation[J].Radio Science.1998, 33(4):1095-1111[2]齐国清,贾欣乐.基于DFT相位的正弦波频率和初相的高精度估计方法.电子学报,2001,29(9):1164-1167.[3]Crombie D D. Doppler spectrum of sea echo at 13[J].6Mc/s. Nature.1955, 175:681-682[4]Barrick D E. First-order theory and analysis of MF/HF/VHF scatter form the sea. IEEE Trans.on AP., 1972, AP-20(1)0: 2-10.[5]Parent J, Bourdillon A. A method to correct HF skywavc backscattcrcd signals for ionospheric frequency modulation. IEEE Trans. on AP., 1988, AP-36(1): 127-135.[6]Barnum J R. Ship detection with high-resolution HF skywave radar[J].IEEE J. of Oceanic Engineering.1986, 11(2):196-209[7]Anderson S J, Abramovich Y I. A unified approach to detection, classification, and correction of ionospheric distortion in HF sky wave radar systems[J].Radio Science.1998, 33(4):1055-1067[8]Anderson S J. Adaptive remote sensing with HF skywave radar. IEE Proc.-F, 1992, 139(2):182-192.[9]Olkin J A, Nowlin W C, Barnum J R. Detection of ships using OTH radar with short integration times. IEEE National Radar Conference, Syracuse, USA, 1997: 1-6.[10]Anderson S J, Mahoney A R, Turley M D E. Applications of superresolution techniques to HF radar sea echo analysis, Proceedings of the Pacific Ocean Remote Sensing Conference, Melbourue,Australia, 1994.
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出版历程
  • 收稿日期:  2002-09-23
  • 修回日期:  2003-05-14
  • 刊出日期:  2004-04-19

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