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| 1 | 海洋声学目标探测技术研究现状和发展趋势显示文摘海洋声学目标探测——这一覆盖甚广的研究领域,其具有多种研究思路和技术途径,而利用水声通信组网技术将主被动探测节点连接成水声探测网络,并对获取的多源信息进行融合,是海洋声学目标探测技术发展的重要途径之一。基于此,文中分别从被动探测技术、主动探测技术、水下通信组网和多源信息融合4个方面,对海洋声学目标探测技术的发展脉络进行梳理,介绍了相关理论方法的特点,指出了各自的优缺点,同时阐述了海洋声信道对目标探测的影响。最后,从以上4个方面对海洋声学目标探测技术的未来发展趋势进行了展望:被动探测技术从空域处理角度出发,将会朝着大孔径阵列的稳健阵列处理技术、新型传感器及其阵列的研制,以及信号处理与水声物理模型的充分结合这3个方面发展;主动探测技术则会继续发展低频大功率探测技术、多基地组网探测技术和新体制主动探测技术,同时智能化主动探测技术和生态友好型主动探测技术也将是其发展趋势;水下通信组网技术未来将侧重发展如何利用网络协议提高通信可靠性、跨介质组网协议、面向任务的网络资源调度以及标准化水声网络实验平台建设;多源信息融合探测技术则更多的是要进一步深入进行测量信息与信息间互补关系的建模研究。 | 杨益新 韩一娜 赵瑞琴 刘雄厚 汪勇 | 2018 | 水下无人系统学报2018，26，5： | 19 |
| 2 | 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 |
| 3 | 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 |
| 4 | Matched-field localization using a virtual time-reversal processing method in shallow water显示文摘Time-reversal processing(TRP) is an implementation of matched-field processing(MFP) where the ocean itself is used to construct the replica field.This paper introduces virtual time-reversal processing(VTRP) that is implemented electronically at a receiver array and simulates the kind of processing that would be done by an actual TRP during the reciprocal propagation stage.MFP is a forward propagation process,while VTRP is a back-propagation process,which exploits the properties of reciprocity and superposition and is realized by weighting the replica surface with the complex conjugate of the data received on the corresponding element,followed by summation of the processed received data.The number of parabolic equation computational grids of VTRP is much smaller than that of MFP in a range-dependent waveguide.As a result,the localization surface of VTRP can be formed faster than its MFP counterpart in a range-dependent waveguide.The performance of VTRP for source localization is validated through numerical simulations and data from the Mediterranean Sea. | ZHANG TongWei YANG KunDe MA YuanLiang | 2011 | Chinese Science Bulletin2011，56，8： | 0 |
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