ID 原文 译文
17225 水声正交频分复用(OFDM)系统中，采用传统正交匹配追踪(OMP)方法估计离网格(off-grid)时延时，需要很高的过采样因子和高昂的计算开销。 Traditional Orthogonal Matching Pursuit (OMP) method needs high oversampling factor andcomputational overhead to estimate off-grid path delays in underwater acoustic Orthogonal Frequency DivisionMultiplexing (OFDM) systems.
17226 针对传统OMP方法估计离网格时延计算复杂度高的问题，该文借鉴多元线性拟合思想引入路径补偿的概念，提出了一种基于路径补偿的改进OMP时延估计算法，用以补偿从离网格路径向其周围网格位置泄漏的能量，并用补偿距离这一参数来解释路径补偿效果。 In this paper, the idea of path compensation is introduced from multiple linearfitting theory, and an improved OMP path delay estimation method based on path compensation is proposed to reduce the energy leaking from off-grid paths to its surrounding grids. The compensation distance is used toevaluate compensation effect.
17227 该算法无需增加过采样因子，仅利用恰当的补偿距离即可实现较好的估计效果，且能在提高估计性能的同时降低计算复杂度。 The improved algorithm can improve the estimation performance by appropriate compensation distance without increasing the oversampling factor. Compared with the traditional OMP method, the proposed algorithm has lower computational complexity but better estimation performance.
17228 仿真分析与海试结果验证了该方法的优越性。 The results of simulations and sea trial data decoding show the superiority of the proposed method.
17229 时延估计(TDE)是水声领域的重要研究课题，基于时延估计的水声目标被动测向、被动定位技术是水声目标无源定位的重要分支。 Time Delay Estimation(TDE) is an important research subject in underwater acoustic field. Passivedirection-finding and passive location based on TDE are important brunches in passive location of underwateracoustic target.
17230 目前，较为常用的时延估计方法有基本互相关法(NCC)、广义互相关法(GCC)、自适应时延估计(LMS)等。 At present, the common TDE methods include Normalized Cross Correlation(NCC) method,Generalized Cross Correlation(GCC) method and Least Mean Square(LMS) method.
17231 不同于以上方法的思路，该文利用两路信号的互谱相位(CSP)设计了一种时延估计的新方法， Different from the above methods, a new method of TDE is designed by using Cross-power Spectrum Phase(CSP) in this paper.
17232 该方法将互谱相位进行傅里叶变换，利用其变换域估算相位斜率以求取时延，能够实现多目标分辨、消除时延估计模糊与背景起伏。 This method performs Fourier transform of CSP and uses the transform domain to estimate the CSP slope to get thetime delay. This method can realize multi-target resolution and eliminate the ambiguity and backgroundfluctuation.
17233 仿真实验证明，该方法效果要优于基本互相关，广义互相关等方法。 Simulation results show that this proposed method is better than NCC and GCC.
17234 针对双极化气象雷达中非气象回波的滤除问题，该文提出一种基于谱极化参数(SPP)的杂波滤波方法。 For removing non-weather echoes from the data of dual-polarization weather radar, a clutter filteringmethod based on Spectral Polarimetric Parameters (SPP) is presented in this paper.