ID 原文 译文
9694 利用GST时频聚焦性提供良好的直线线性,有易于Hough变换的直线检测,提升变换后主峰峰值并降低副峰高度。 Use of GST provide good linear linear time-frequency focusing on sex, are easy to straight line detection Hough transform, promote transformation after the main peak and reduce the peak height.
9695 通过与WHT(Wigner-Hough transform)、分数阶傅里叶变换与周期WHT算法的仿真对比,定量评估算法的适用性,并与经典算法对比,定性的描述出算法良好的时频聚焦性,凸显GSTH算法在强噪声背景下具有更好的检测精度与适用范围。 With WHT (Wigner - Hough transform, fractional Fourier transform and periodic WHT algorithm simulation comparison, quantitative evaluate the applicability of the algorithm, and compared with classical algorithms, the qualitative description of the algorithm is good time-frequency focusing, highlight GSTH algorithm under the background of strong noise has better precision and scope.
9696 为了提高时差型卫星定位系统对舰船的定位精度,提出了一种基于船舶自动识别系统(automatic identification system,AIS)信息的舰船位置标校方法,该方法将具有AIS信息的民船作为标校源对军舰位置进行校正。 Type in order to improve the time difference between the positioning precision of satellite positioning system for ship, is proposed based on a ship automatic identification system (automatic identification system, AIS) information of ships position calibration method, this method will have AIS information of civilian as calibration sources for warship position correction.
9697 首先,针对AIS信息无法直接用于位置标校的问题,提出了标校源雷达位置及其误差估计方法;‭ ‭First, in view of the AIS information cannot be directly applied to position calibration problem, put forward the position calibration source radar and its error estimation method;
9698 其次,针对标校源雷达位置存在的误差,建立了标校方法的误差分析模型和标校源有效性分析方法,理论分析了标校定位精度及其改善程度,为标校源的选择提供了依据。 ‭Secondly, based on the error of the calibration source radar position and set up the error analysis model of the calibration method and calibration source effectiveness analysis method, theoretical analysis of the calibration precision and its improvement, and provide the basis for the selection of the calibration source.
9699 最后,仿真分析验证了提出的标校方法的有效性。 ‭Finally, the simulation analysis to verify the effectiveness of the proposed calibration method.
9700 针对传统滤波方法在α稳定分布噪声环境下性能退化的问题,从加权Myriad滤波以及加权Merid滤波方法出发,以M估计理论为基础,推导得到稳健加权(robust weighted,RW)滤波方法的统一算法结构。 In view of the traditional filter method in alpha stable distribution noise environment performance degradation problems, from weighted Myriad filtering and the weighted Merid filtering method, on the basis of M estimation theory, deduces the steady weighted (robust weighted, RW) unified algorithm structure of filter method.
9701 并据此提出了基于RW滤波的新算法,即基于稳健加权滤波的统一框架,从而将加权Myriad、加权Merid以及基于广义柯西分布的加权滤波器统一起来。 And accordingly puts forward a new algorithm based on RW filter, namely unified framework, based on the robust weighted filtering to weighted Myriad, weighted Merid and unifying of the weighted filter based on the generalized cauchy distribution.
9702 此外,针对线性调频(linear frequency modulation,LFM)信号采用基于RW的LVD(RW-LVD)方法估计其参数,并根据估计性能对RW方法的抑噪效果进行分析。 In addition, in view of the linear frequency modulation (linear frequency modulation, LFM) signal based on RW LVD (RW - LVD) method to estimate its parameters, and according to the estimation performance of RW method of noise suppression effect is analyzed.
9703 仿真结果表明,与基于加权Myriad滤波、加权Merid滤波以及基于广义柯西分布的加权滤波等多种方法相比,在强脉冲噪声下RW滤波方法能有效抑制脉冲噪声,并具有良好的稳健性。 The simulation results show that with a weighted Merid filtering based on weighted Myriad filtering, and based on the generalized cauchy distribution, compared to a variety of methods such as weighted filtering RW under strong impulse noise filtering method can effectively restrain impulse noise, and has good robustness.