ID 原文 译文
22545 针对 GPS/INS 组合导航系统中，由于量测噪声统计的不确定性导致平方根容积卡尔曼滤波器(SCKF)滤波精度下降甚至发散的问题，该文提出一种基于加权的自适应 SCKF(WASCKF)方法。 In the GPS/INS integrated navigation system, the filtering precision of Square-root Cubature Kalman Filter (SCKF) will decrease or even diverge resulting from the uncertainty of the measured noise statistics, therefore, a Weighting Aaptive Square-root Cubature Kalman Filter (WASCKF) method is proposed in this paper.
22546 该方法首先利用移动开窗理论对 SCKF 新息的协方差阵进行最大似然估计，实现对测量噪声统计特性的在线调整； Firstly, the moving window method is employed to conduct the maximum likelihood estimation of the covariance matrix of SCKF, in order to realize the online adjustment of the statistical characteristics of the measured noise.
22547 然后，利用加权理论，依据窗口内不同时刻信息的有用程度的不同而设置相应的权值，增强对窗口内有用信息的利用。 Then, the weighting theory is utilized to set the corresponding weights according to the usefulness of the information at different times in the window, thus it takes great use of effective information in the window.
22548 最后，将 WASCKF方法应用于 GPS/INS 组合导航系统中进行仿真验证，并与 SCKF 和 ASCKF 方法进行比较，结果表明，在测量噪声统计存在不确定情况下，该文所提出方法的速度误差和位置误差的均方根均小于 SCKF 和 ASCKF 方法，能够有效地提高 GPS/INS 组合导航系统对量测噪声统计不确定的自适应能力与导航性能。 Finally, the WASCKF is applied to the GPS/INS integrated navigation system for simulation  and verification, and compared with the SCKF and ASCKF methods. The results indicate that the mean square root of velocity errors and position errors of the proposed method are less than SCKF and ASCKF, and it can effectively improve the adaptive capability and navigation performance of GPS/INS integrated navigation system with the measured noise uncertainty.
22549 为了进一步提高卫星导航接收机对 BOC(1,1)及其衍生类型调制信号的码鉴相的质量和跟踪能力，尤其是在高动态下的跟踪性能。该文提出一种基于局部相关函数插值的方法确定 BOC(1,1)调制信号的码相位。 In order to further improve the BOC (1,1) and its derived types modulated signal's code discrimination quality and tracking ability of the satellite navigation receiver, especially in high dynamic. This paper proposes a method to determine the BOC (1,1) modulated signal code phase by partial correlation function interpolation.
22550 该方法基于相关器阵列的结构，根据相关器阵列的输出值判断相关峰值的大致范围。 This method is based on the structure of correlators array, the approximate range of the correlation peak is determined by the correlators' output.
22551 利用广义延拓逼近的方法估计码相位的位置，同时在缺少延拓空间的情况下构造一个虚拟的相关器以完成对码相位的估计。 The generalized extended approximation method is used to estimate the code phase, and a virtual correlator is created in order to process the generalized extended approximation when the extended range does not exist.
22552 该文具体分析了单侧相关器个数对牵入范围的影响，在此基础上对所提方法进行了计算机仿真实验。 In this paper, the influence of the one side correlators' number N on the linear pull-in region is analyzed in detail. On this basis, the computer simulation experiment for the proposed method is given.
22553 理论和仿真证明：所提方法能够在不增加过多硬件资源的条件下扩大码鉴相函数的线性牵入范围，进而能够提高接收机对于 BOC 调制信号的跟踪精度。 Theoretical and simulation results show: the proposed method can be used to enlarge the linear pull-in region of phase discrimination function without adding too much hardware resources, furthermore, it can improve the BOC modulated signals' tracking accuracy for the receiver.
22554 该文提出一种基于自适应块稀疏字典学习的电阻抗图像重建算法，构建了分块稀疏字典，较好地保留了重建图像的细节信息； An electrical impedance image reconstruction algorithm based on adaptive block-sparse dictionary is proposed. A block-sparse dictionary is constructed creatively, which preferably preserves the details of reconstructed images.