ID 原文 译文
20915 同时由于排除载体自身散射的影响，避免了对载体尺寸、超低散射特性的要求，有效降低了载体的加工设计成本。 At the same time, due to reducing the influence of the scattering of the carrier itself, this method avoids the requirement of the carrier size and ultra-low scattering characteristics, and reduces effectively the processing cost of the carrier.
20916 成对载波多址复用(PCMA)混合信号单通道盲分离性能界是衡量混合信号可分离程度以及分离算法性能的标准。 Blind separation performance bound of Paired Carrier Multiple Access (PCMA) mixed signal is a measure of the separability of mixed signals and the performance of the separation algorithm.
20917 针对PCMA混合信号，从发送信号模型出发构造调制信号比特与符号的空间映射，利用最大似然准则推导与混合信号分离算法无关的分离性能下界表达式， For the PCMA mixed signal, the spatial mapping of the modulation signal bits and symbols is constructed from the transmit signal model. The maximum likelihood criterion is used to derive the lower bound expression of separation performance independent of the separation algorithm.
20918 数值计算结果与理想情况下Viterbi仿真结果吻合，验证了所推导性能界的合理性。 Numerical results agree well with the Viterbi simulation results under ideal conditions, which verify the rationality of the derived performance boundaries.
20919 针对基于加性噪声模型的单信标测距定位算法不能精确表征距离观测量的实际特征，存在模型失配的问题，该文给出一种考虑乘性噪声特性的联合最小二乘法和非线性渐消滤波的两步定位算法。 Single beacon location algorithm based on additive noise model can not accurately represent theactual characteristics of distance measurement, leading to a problem of model mismatch. A two step location algorithm considering the multiplicative noise characteristics is presented, which combines least squares algorithm and nonlinear fading filter.
20920 在分析有效声速误差与距离观测量乘性噪声内在联系的基础上，建立了乘性噪声背景下的测距误差模型， A range error model in the background of multiplicative noise is established based on the analysis of the effective sound velocity error.
20921 通过引入一种新的弱化因子计算方法对乘性噪声背景下带单重渐消因子的非线性渐消滤波算法进行了改进， The nonlinear fading filtering algorithm with single fading factor under multiplicative noise background is improved by introducing the attenuation factor which increases the track continuity.
20922 利用基于最小二乘法的预定位过程解决改进算法对初值敏感的问题。 Using the least squares based pre-location process to solve theproblem that the improved algorithm is sensitive to the initial value.
20923 仿真及试验数据表明该算法在水下航行器接近信标的态势下定位精度明显优于加性噪声背景下的扩展卡尔曼滤波算法。 The simulation and experimental data show that the location precision of the proposed algorithm is obviously better than the extended Kalman filtering algorithm under the additive noise background.
20924 面对高速发展的互联网应用，传统的路由与频谱分配(RSA)问题迎来新的挑战。 Oriented to the high-rapid development of Internet applications, new challenges are encountered bythe conventional Routing and Spectrum Assignment (RSA).