code acquisition meaning in Chinese
码的捕获
Examples
- As a result , pseudorandom code acquisition and tracking , carrier recovering , error correction and decoding functions are needed in the if digital receiver
因此，其中频数字接收机需要完成伪随机码捕获跟踪、载波恢复、纠错译码等功能。 - This paper investigates the key technology of the ds - cdma system - psendonoise ( pn ) code acquisition technology . various pn code acquisition scheme has been introduced here
本文对ds - cdma系统中的关键技术?扩频序列的捕获?进行了深入的研究，介绍了扩频序列的多种捕获方案。 - However , the longer length of c / a code , the more hardware resource and power it cost . this dissertation commits research on algorithm of c / a code acquisition in satellite navigation position system , and compares the acquisition means of digital differential matched filter ( ddmf ) with traditional means , and also achieves ddmf with the vhdl language and fpga platform
扩频码的周期的加长会给卫星导航定位系统带来许多相应的好处,但问题也就随着之而来了,扩频码的周期越长,同步捕获所需得的时间就越长,而且若用传统的并行捕获方法,将极大的耗费硬件资源,而且系统功耗会随之增大。 - At last the algorithm of ddmf is achieved by the investigation tool of altera company ? quartus ii and the vhdl language , and its ip core is also achieved which is used not only in the satellite navigation position system , but also in the long pn code dsss system . ddmf investigated in the dissertation gives a good way to design the rapid pn code acquisition in the beidou project , and the technology has the definite theory and practice significance
此外还应用altera公司的最新的fpga开发工具quartusiiv5 . 1 ,采用了国际标准的硬件描述语言? vhdl语言,对数字差动匹配滤波器和传统匹配滤波器算法予以实现,开发了该算法的软ip核,可以对所应用的扩频码长度, a / d采样后的数据量化阶数,所用扩频码等可进行随意改写。 - Because the hybrid acquisition scheme ( combines parallel search with serial search ) based on the correlator provides the flexibility in the trade - off between the mean acquisition time and system complexity and is easy to implement , it ? focus on the scheme here . on the other hand , this paper analyzes the effect of multiple access inference ( mai ) on the code acquisition performance for the multipath fading channels
基于相关器解扩的串-并混合方案由于有着可在平均捕获时间和电路复杂程度（这是捕获电路的两个重要指标）这两个技术指标间灵活折衷的优点和易于实现的特点，本文的重点就放在该方案中。