• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Computer-Aided Industrial Design Conceptual Design >A New Coding Method
【24h】

A New Coding Method

机译：一种新的编码方法

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The principle of "waveform invariance" is used for velocity measurement of the correlation sonar, which has a bottom tracking capability for providing earth reference velocity. For earlier two-pulse sonar systems, trade-offs were made between maximum range and velocity variance due to the reason that pulse width is equal to or less than pulse repetition period. A new pulse coding technique for a single transmitted pulse is utilized in the paper with respect to the conflicting problem mentioned above. The method involves truncated Gold sequence which contains the same number of 0's and 1's. The nature of the coded pulse is such that the autocorrelation function of the pulse possesses a temporal autocorrelation peak at a predetermined time lag besides at 0. The method used will increase achievable range while velocity accuracy not be deteriorated because correlationdelay is less than pulse width.
机译：“波形不变性”的原理用于相关声纳的速度测量，其具有用于提供地球参考速度的底部跟踪能力。对于早期的双脉动声纳系统，由于脉冲宽度等于或小于脉冲重复时段，因此在最大范围和速度方差之间进行权衡。关于上述冲突问题的纸张中使用了一种用于单个透射脉冲的新脉冲编码技术。该方法涉及截断的金序列，其包含相同的0和1的序列。编码脉冲的性质使得脉冲的自相关函数在除此之外的预定时间延迟处具有时间自相关峰值。所用的方法将增加可实现的范围，而速度精度不会劣化，因为相关性宽度不到脉冲宽度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号