ID 原文 译文
41336 该方法将原模图与Zig-Zag结构的移位系数设计方法相结合，构造校验矩阵围长至少为8且码长码率可灵活选择的ZZ-QC-LDPC码。 This construction method combines the protograph with the method of designing the shift coefficient of the Zig-Zag structure to construct the ZZ-QC-LDPC code with the check matrix of the girth-8 and the flexibly adjustable code-length code-rate.
41337 仿真结果表明:该方法所构造的ZZ-QC-LDPC码在误码率为10~(-6)时，与同码率下基于等差数列和原模图构造的QC-LDPC码和基于最大公约数构造的QC-LDPC码以及具有大围长快速编码特性的QC-LDPC码相比，其净编码增益分别提高了约0.2，0.1和0.64dB，且在较大码率范围内均具有良好的纠错性能。 The simulation results show that under the same code-rate, the net coding gains of the ZZ-QC-LDPC code constructed by the proposed construction method, compared with the QC-LDPC code based on the arithmetic progression and protograph and the QC-LDPC code based on the greatest common divisor as well as the QC-LDPC code based on the large-girth fast encoding characteristics, can be improved by about 0.2, 0.1 and0.64 dB respectively at the bit error ratio of 10-6, furthermore, the ZZ-QC-LDPC code has the more excellent error-correcting performance within the wider code-rate range.
41338 为了消除激光跳模对调频连续波激光测距的影响，提出了一种基于重采样信号相位拼接的跳模影响消除方法。 To eliminate the influence of laser mode hopping on FMCW ranging, a mode hopping elimination method based on resampled signal phase splicing is proposed in this paper.
41339 该方法利用重采样信号相位展开求导的结果来定位激光跳模发生的时间，并对重采样信号跳模处两端的峰值进行相位拼接来去除跳模段的重采样信号。 It uses the result of the phase derivation of the resampled signal to locate the time when laser mode hopping occurs, and phase splices the peaks at both ends of the resampled signal to remove the signal in the mode hopping section.
41340 通过对相位拼接后的重采样信号进行Chirp-Z变换可以得到不受激光跳模影响的目标距离谱。 By performing Chirp-Z transformation on the resampled signal after phase splicing, the target distance spectrum not affected by laser mode hopping can be obtained.
41341 系统对光程约为21.16m的延时光纤进行多次测量，实验效果证明此方法可以消除调频激光跳模对距离测量的影响，并实现了12μm的测距标准差。 The system performs multiple measurements on the delay fiber of 21.16 m.Experimental results show that this method can eliminate the influence of laser mode hopping on the distance measurement, and improve the measurement standard deviation to 12μm.
41342 时间数字转换器(Time-to-Digital Converter，TDC)是一种将连续时间信号转换为数字信号输出的器件，是飞行时间(TOF)激光雷达中的关键部件。 Time-to-digital converter(TDC)is a device for converting continuous time signal to digital signal, and it is the key component of TOF lidar.
41343 在利用计数器粗采样和多相位内插细采样的传统结构上，设计了一种基于相位内插的双级粗细结合型时间数字转换电路，并增加了双回波接收通路来接收多脉冲回波信号， In this paper, designed is a two-stage coarse-fine combined time-to-digital converter circuit based on the traditional structure of counter coarse sampling and multi-phase interpolation fine sampling, and also a double echo receiving channel is added to receive multi-pulse echo signal.
41344 在此基础上设计了一款17通道多路TDC系统芯片。 On this basis, a 17-channel multi-channel TDC system chip is designed.
41345 芯片采用CMOS 0.11μm工艺设计，版图面积为0.6mm×3mm。 The system chip is designed with CMOS 0.11μm process, and the layout area is 0.6 mm×3 mm.