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文章介绍了带状光缆研制过程中松套管设计的基本步骤,对松套管的工艺要点进行了简要描述。通过定量分析阐明了松套管的设计要点,结合生产实际说明了松套管制造需注意的问题,同时对于松套管的重要组成部分纤膏的选用提出了建议,用实验论证了纤膏对松套管的影响以及绞合节距对光缆性能的影响,并给出了不同绞合节距下拉伸实验的曲线图。

Copyright of Journal of National University of Defense Technology / Guofang Keji Daxue Xuebao is the property of NUDT Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Effective spoofing detection is the premise for GNSS receiver carrying out spoofing suppression, preventing the occurrence of positioning, velocity, and timing information errors. A spoofing detection technique for GNSS receiver is proposed based on carrier phase double difference of a Spin-Antenna. After translational motion elimination and non-related differential processing, the carrier phase value of the uniform rotation of the receiver antenna can be used to realize the detection of single transmit antenna output spoofing signal by generalized likelihood ratio test. Furthermore, the impact of rotation speed, radius, and the length of data on detection performance is analyzed. The results show that increasing the length of data is the inevitable choice for improving detection performance. A non-detection zone is defined for global detection performance by comparing and limiting the decrease in the detection performance. A Monte-Carlo simulation illustrates the correctness of the method and analysis. [ABSTRACT FROM AUTHOR]

In highly dynamic GNSS simulation systems, since there is a contradiction between precision and calculated volume, a method of real-time high precision pseudorange calculation based on the third-order Hermite interpolation is proposed. In this method, a satellite orbit is computed by an interpolation algorithm and the sequences of the error computation is changed to optimize the pseudorange calculations. Then, by knowing the pseudoranges and derivatives for two nodes, the parameters of the pseudorange change model was computed by a third-order Hermite interpolation algorithm. The pseudorange derivative was obtained by the second order derivative Lagrange interpolation formula. The highly dynamic simulation results show that when the time interval is 1 s, the maximum pseudo-range error is 0.638 mm, and the standard deviation is 0.172 mm. [ABSTRACT FROM AUTHOR]