ID 原文 译文
50147 仿真分析结果表明:随着基线长度增加，发射站和接收站两侧区域定位精度进一步改善，但会造成基线区的定位误差增大; Simulation results show that, with the baseline length increases, the station and station area on both sides to further improve positioning accuracy, but it will cause the positioning error increases the baseline;
50148 在基线长度一定时，时间和方位测量误差增大均造成定位精度下降，且算法精度对方位测量误差相对敏感。 When a certain baseline length, time, and the azimuth measurement error increases are falling positioning accuracy, and precision of algorithm each other a relatively sensitive to measurement errors.
50149 与同等条件下的单基地声纳定位相比，双基地BTBL算法在接收站点具有明显的探测优势。 Compared with the same condition of single base sonar, double base BTBL algorithm in the detection of receiving site has obvious advantages.
50150 该研究为T-R型双基地系统的水下定位提供了理论依据。 The study of type T - R bistatic system provides theory basis for underwater positioning.
50151 低密度奇偶校验码(low-density parity-check codes，LDPC)以其接近香农极限的性能和相对简单的译码结构得到信道编码界的广泛关注。 Low density parity check code (low density parity check - codes, LDPC) with its close to shannon limit performance and relatively simple decoding structure widely attention in the field of channel coding.
50152 对LDPC码的最小和算法进行了深入地研究，通过多种方法量化译码时的初始消息，最终使得每次迭代的校验消息与变量消息都变为整数，实现了基于整数运算的最小和译码算法，并进行了对比分析。 Minimum and algorithm for LDPC code has carried on the thorough research, through a variety of methods to quantify the initial message when decoding, eventually making each iteration of the checking news with integer variable message, and implements the minimum and decoding algorithm based on integer arithmetic, and has carried on the comparison and analysis.
50153 仿真表明，量化后的最小和算法中的所有变量都用固定长度的整数表示，因而便于硬件实现，在其译码性能比和积译码(sum-product decoding，SP)性能下降不大的情况下大大提高了译码速度; Simulation shows that after the quantitative algorithm of minimum and all the variables are expressed with fixed length of an integer, and therefore is convenient for hardware implementation, in the decoding performance ratio and decoding (sum - product decoding, SP) performance degradation under the condition of not greatly improve the decoding speed;
50154 平均互信息越大的量化方法，其量化分层电平也越佳; The greater the average mutual information quantitative method, the quantitative hierarchical level is better;
50155 最大平均互信息量化下的最小和译码算法性能最好， Under the maximum average mutual information quantification of the minimum and decoding algorithm has the best performance,
50156 最大平均互信息量化是一类能最大可能获得信源信息条件下的最佳量化方法，且不增加译码复杂度。 the maximum average mutual information quantification is a kind of to the greatest possible access to source information under the condition of the best quantitative method, and does not increase the decoding complexity.