| 基于空-频域特性的飞机尾流检测前跟踪方法 |
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| 引用本文： | 王雪松,孙文峰,蔡益朝.基于空-频域特性的飞机尾流检测前跟踪方法[J].空军雷达学院学报,2013(4):235-238. |
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| 作者姓名： | 王雪松 孙文峰 蔡益朝 |
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| 作者单位： | [1]空军预警学院空天预警实验室,武汉430019 [2]国防科技大学电子科学与工程学院,长沙410073 |
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| 基金项目： | 国家部委级资助项目;学院青年创新基金资助项目（X11QN201） |
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| 摘 要： | 与常规点目标相比,尾流跨越多个角度和多普勒分辨单元,常规检测方法不能充分利用其空-频域特性,因此很难实现较远距离上的尾流探测.基于尾流的多普勒扩展特性和空间线状分布特性,提出了一种基于幅度和位置量测的检测前跟踪(TBD)方法.仿真结果表明,该方法能够通过频域低门限预处理实现高检测概率,通过空间积累降低虚警概率;通过增加辅助信号处理通道,能够增大尾流的探测距离.
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| 关 键 词： | 飞机尾流 微弱目标 扩展目标 检测前跟踪 粒子滤波 |
TBD Method for Aircraft Wake Based on Space-frequency Domain Characteristics |
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| Affiliation: | LIU Jun-kai, WANG Xue-song, SUN Wen-feng, CAI Yi-cao (1. Laboratory for Air/Spare-based Early Warning, Air Force Early Warning Academy, Wuhan 430019, China; 2. School of Electronics Science and Engineering, National University of Defense Technology, Changsha 410073, China) |
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| Abstract: | It is known to us that the aircraft wake spans multiple angles and Doppler resolution cells, compared with those of conventional targets, and it is very hard to implement the wake detection over the long distance, just because the conventional detection method can not make full use of its space-frequency domain characteristics. In terms of the characteristics of Doppler spread and spatial linear distribution of the wake, this paper puts forward a method of tracking before detection （TBD） based on measurement of amplitude and position. Simulation results show that this method could implement the high detection probability through low threshold pre-processing in frequency domain, and reduce the false alarm probability by spatial accumulation. And this method can also widen the detection range of wake through the auxiliary signal processing channel. |
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| Keywords: | aircraft wake weak target spread target tracking before detection particle liltering |
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