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| 1 | 二阶锥规划方法对于时空域滤波器的优化设计与验证显示文摘时域滤波器和空域滤波器在信号处理领域具有广泛的应用.到目前为止已经有针对这些问题的大量优化设计准则,求解方法也各不相同,这些方法还存在缺点与不足,值得改进.提出了时域和空域滤波器优化设计的通用优化准则框架,将现有的大多数FIR滤波器优化设计问题、波束形成器优化设计问题纳入该统一的优化框架体系.研究发现,这些优化设计问题都可以转化成二阶锥规划的形式,然后利用已有的内点方法求解.该二阶锥规划方法具有非常大的灵活性,除了能实现现有文献中方法的功能外,还能克服它们对多个性能指标之间不能同时兼顾的缺点.还进一步运用二阶锥规划方法进行时、空域二维滤波器优化设计与矩阵空域滤波器设计.仿真实验结果验证了二阶锥规划方法的有效性. | 鄢社锋 马远良 | 2006 | 中国科学(E辑)2006，36，2： | 32 |
| 2 | 匹配场噪声抑制:广义空域滤波方法显示文摘提出了通过广义空域滤波器对水声信道中某些区域的干扰噪声进行抑制, 从而改善对目标的匹配场定位的新方法. 通过设计一个空域的矩阵滤波器, 在保证该滤波器对阻带区域拷贝向量响应的范数低于某设定值的条件下, 使其对通带内拷贝向量响应畸变最小. 研究显示, 该滤波器的优化设计问题可以转化为二阶锥规划(Second-order cone programming)的形式, 然后利用已有的内点方法(Interior- point methods)求出其数值解. 还给出了消除通带内拷贝向量畸变的匹配场定位算法. 仿真结果表明, 设计出的广义空域滤波器能够有效地抑制给定区域的噪声干扰, 实现感兴趣区域的弱目标定位. | 鄢社锋 马远良 | 2004 | 科学通报2004，49，18： | 29 |
| 3 | 基于经验模式分解的拖曳式声纳拖船噪声抵消研究显示文摘拖曳式线列阵声纳的拖船噪声具有多途角扩展等特点,并且是一个非平稳过程,使得对该噪声的消除或抑制是一大难点。经验模式分解是一种用于分析非线性非平稳信号的新方法,该方法自适应地将嵌于数据内部的多个固有模式函数逐一分解开来。本文尝试利用经验模式分解方法分离出水听器接收信号中的拖船干扰噪声,从而达到消除干扰的目的。海上试验数据的处理结果充分验证了这种方法的可行性。 | 张宾 孙长瑜 孙贵青 | 2007 | 应用声学2007，26，2： | 12 |
| 4 | Matched field noise suppression: A generalized spatial filtering approach显示文摘An approach to improving the performance of matched field localization by introducing a generalized spa-tial filter to suppress interference noise and pass the signal of interest with minimal distortion is presented. The spatial filter is designed by minimizing the maximum distortion of the filtered replica vectors within passband while guaran- teeing the norm of the filter response within the stopband to be lower than some given threshold values. We show that the design problem can be formulated as the second-order cone programming (SOCP) which can be solved efficiently via the well-established interior point method. A modified matched field processor is given to ultimately eliminate the effect of the distortion in the spatially filtered replica vectors. Computer simulation results confirm the effectiveness of the proposed approach by localizing a weak source in the pres-ence of a strong interferer and noise. | YANShefeng MAYuanliang | 2004 | Chinese Science Bulletin2004，49，20： | 9 |
| 5 | 双重优化的宽带聚焦波束形成算法研究显示文摘在相干信号子空间法中确定聚焦矩阵时,对初始方向估计的偏差和聚焦频率选择的偏差都会影响最终的聚焦效果,甚至会使算法失效。针对这个缺陷,提出了一种双重优化的宽带聚焦波束形成算法。该算法利用稳健Capon波束形成算法对聚焦矩阵进行修正,使宽带信号通过修正的聚焦矩阵全部聚焦在最佳聚焦频率上,再对窄带数据利用2阶锥方法实现波束形成。计算机仿真以及湖试实验结果表明,该算法在保证波束恒定的前提下,在各个频率点都具有更低的旁瓣级。 | 毕杨 王英民 王奇 | 2017 | 兵工学报2017，38，8： | 9 |
| 6 | Optimal design and verification of temporal and spatial filters using second-order cone programming approach显示文摘Temporal filters and spatial filters are widely used in many areas of signal processing. A number of optimal design criteria to these problems are available in the literature. Various computational techniques are also presented to optimize these criteria chosen. There are many drawbacks in these methods. In this paper, we introduce a unified framework for optimal design of temporal and spatial filters. Most of the optimal design problems of FIR filters and beamformers are included in the framework. It is shown that all the design problems can be reformulated as convex optimization form as the second-order cone programming (SOCP) and solved efficiently via the well-established interior point methods. The main advantage of our SOCP approach as compared with earlier approaches is that it can include most of the existing methods as its special cases, which leads to more flexible designs. Furthermore, the SOCP approach can optimize multiple required performance measures, which is the drawback of earlier approaches. The SOCP approach is also developed to optimally design temporal and spatial two-dimensional filter and spatial matrix filter. Numerical results demonstrate the effectiveness of the proposed approach. | YAN Shefeng MA Yuanliang | 2006 | Science in China(Series F)2006，49，2： | 6 |
| 7 | Matched field noise suppression: Principle with application to towed hydrophone line array显示文摘Discrete noise source suppression in underwa-ter acoustic channel has attracted great attention in recent years. The paper proposes a new principle for dealing with the problem. This new principle is called matched field noise suppression (MFNS). Based on a previous work of the au-thors group, a full understanding about how a discrete noise source shows effects on the performance of a towed hydro-phone line array has been obtained. In light of that finding, MFNS is proposed, which explores and utilizes the charac-teristics of the noise transmission channel to achieve much greater suppression of the noise in comparison with existing approaches. MFNS combines the concept of matched field processing (MFP) and optimal sensor array processing (OSAP) together to suppress the discrete noise source and to maintain an optimal beam for receiving far-field wanted plane wave signals. A MFNS beam-former is deduced in constraint with signal plane-wave response being unit and noise matched field response being zero. A closed-form solution of the weight vec-tor for the beam-former is given. Computer simulation results agree well to the theoretical analysis. | MA Yuanliang YAN Shefeng YANG Kunde | 2003 | Chinese Science Bulletin2003，48，12： | 4 |
| 8 | 一种基于矢量拖曳阵的拖船干扰抵消算法显示文摘拖曳阵中的拖船干扰常常是限制目标的观测范围和检测性能的重要因素之一。在浅海环境中,由于拖船干扰存在严重的多途效应,采用传统的自适应干扰抵消方法,效果并不理想。为了抵消矢量拖曳阵的拖船干扰,利用矢量拖曳阵中振速通道正交于阵艏的分量对拖船干扰不敏感的特点,提出一种基于矢量阵的拖船干扰抵消算法。该算法抗多途干扰效果好,可以有效地抑制拖船干扰,实验数据处理结果验证了该算法的有效性,可望在实际的声纳工程中得到应用。 | 李磊 高洁 吴克桐 涂英 蔡惠智 | 2009 | 声学技术2009，28，5： | 4 |
| 9 | 低频大孔径线列阵声呐在海底反射区的测向性能分析显示文摘与深海直达声探测、会聚区探测不同,在海底反射声探测模式下,低频大孔径线列阵声呐采用常规阵列信号处理方法,会产生测向误差增大和方位分裂等测向性能下降现象。目前,关于海底反射声探测模式下测向性能下降程度的预报、测向性能下降现象出现的区域位置预报等方面尚缺乏研究。该文针对该问题,提出一套海底反射区声呐测向性能预报方法。该方法以深海声场存在简正波簇现象及高阶简正波簇在角谱域分布具有稳定性等分析结论为支撑,提出高阶简正波簇角谱域分布向空域分布的转换方法、高阶简正波簇引起的测向误差量值预报方法、不同高阶简正波簇干涉产生多目标现象的条件的计算方法,实现了对低频大孔径线列阵声呐在深海海底反射区不同位置的测向误差预报、目标方位分裂现象产生的位置和目标角度范围要求预报。 | 韩志斌 彭朝晖 刘扬 | 2019 | 应用声学2019，38，4： | 3 |
| 10 | 一种矢量拖曳阵拖船干扰抑制技术显示文摘0引言拖曳阵中的拖船干扰常常是限制目标观测范围和检测性能的重要因素之一。首先,拖船噪声时间起伏非常大,是一个非平稳随机过程,使得数据协方差矩阵特征值分散严重;其次在浅海环境下,由于声波的多途传播效应,使拖船辐射噪声的角度扩展非常严重[1-2],影响声纳在端射方向的有效观察范围;再次,拖船噪声是近程的空间相干声源。 | 窦平轩 付留芳 吴艳群 胡正良 胡永明 | 2013 | 声学技术2013，32，S1： | 0 |
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