ID 原文 译文
22355 利用厄米特构造，得到了比量子 BCH 码参数更好的量子纠错码。 Using Hermitian construction, the obtained quantum codes, are better than the parameters of quantum BCH codes.
22356 GNSS 信号的空间信号(SIS)质量直接影响用户的定位、测试和授时(Positioning, Velocity and Timing, PVT)服务精度，但由于授权信号保密等原因，授权信号的伪码序列未知，卫星导航系统授权信号质量评估存在一定的困难性。 The quality of Signal-In-Space (SIS) for Global Navigation Satellite System (GNSS) is directly linked to users'  Positioning, Velocity  and  Timing  (PVT)  service.  Limited  to  the  insensitivity  of  authorized  signals,  the pseudo codes can not be obtained, so it is difficult to assess the authorized signal quality.
22357 该文主要分析 GPS  BIIF-5 卫星 L1 频点的相干自适应副载波调制(CASM)信号，利用匹配滤波理论恢复出采集数据中的 P(Y)码和 M 码两个授权信号分量的伪码符号，采用极大似然估计结合信号分布特点准确求解出各信号分量之间的功率分配。 This paper mainly focus on analyzing the Coherent Adaptive Subcarrier Modulation (CASM) signal on L1 frequency points for GPS BIIF-5 satellite and the code sequences of P(Y) and M signal are resumed by using matched filtering technology. The power distribution of each signal component can be solved through the maximum likelihood estimation theory combined with the signal characteristics.
22358 重点分析 P(Y)码和 M 码信号相关性能，包含相关曲线、相关损失和 S 曲线过零点偏差(S-Curve bias)，定量地评估了授权信号的空间信号质量。 This paper laies special stress on quantitatively analyzing the correlation performance on P(Y) and M signals, including correlation curve, correlation loss and S-curve biases.
22359 提出完整的基于 GPS  L1 频点授权信号质量评估方法，研究成果可作为其他卫星导航系统授权信号质量评估的参考。 Based on this complete authorized signals quality assessment method for GPS L1, the research productions can be reference to other satellite navigation systems' authorized signals.
22360 为实现低复杂度、高精度的可变分数时延滤波器设计，该文提出一种截止频率可控的高效设计法。 In order to design variable fractional delay filters with low complexity and high accuracy, an efficient design method with controllable cut-off frequency is proposed, which integrates the analytic all-phase filter design, the cubic spline interpolation and Taylor series expansion.
22361 该方法将全相位滤波器的解析设计与三次样条插值和泰勒级数展开相结合，既可以通过设置时延参数精确地调整滤波器的分数时延，又可以通过设置截止频率参数快速配置 Farrow 结构中各子滤波器的抽头系数，从而灵活地调整滤波器的截止频率。 In the proposed design, not only the time delay of the filter can be precisely adjusted by setting the delay parameter, but also the tap coefficients of each subfilter in the Farrow structure can be rapidly configured via setting the cut-off frequency parameter, thus the cut-off frequency of the filter can be adjusted flexibly.
22362 仿真实验表明，所提方法适用于设计具有中、低截止频率的可变分数时延滤波器，其设计复杂度相比于现有的加权最小二乘设计法低 1 个数量级。 Numerical simulations show that, the proposed method is especially suitable to design variable fractional delay filters with low or middle cut-off frequencies, and its computation complexity is one order of magnitude lower than that of the existing Weighted Least Squares (WLS) design.
22363 多用户共享接入是一种非正交多址接入技术，由于采用了复数域扩频技术，其性能必然受到扩展序列的影响，因此需要对扩展序列进行优选和改进。 Multi-User Shared Access (MUSA) is a non-orthogonal multiple access technology, and its performance will be affected by the spreading sequence due to the usage of complex domain spread spectrum technology, so the spreading  sequences  should  be  optimized  and  improved.
22364 针对现有序列优选算法在进行互相关优选时只考虑了互相关峰值的影响，该文提出一种改进的序列优选算法，该优选算法同时考虑了互相关峰值和互相关均方值的影响，仿真分析表明，系统使用该文提出的优选算法比使用现有的优选算法优选出的序列在相同 BER 时，可以改善 0.9 dB 左右的 SNR 性能。 Considering the problem that only the influence of cross-correlation peak is taken into account in the process of cross-correlation optimization in the existing optimization algorithm, an improved spreading sequence optimization algorithm is proposed. Both the influences of cross-correlation peak and the cross-correlation mean square are taken into consideration. The simulation results show that the proposed  algorithm can promote 0.9 dB SNR performance in the same BER than the existing algorithm.