- [網(wǎng)絡(luò)] 隨機碼；亂碼；存儲編碼
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random code中文什么意思
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- this paper focus on these problems and discusses the possibility of using pseudo-random code phase modulated ( prcpm ) technology in measuring high speed target . at first the basic principle of the m series is given, then a doppler pretreatment method is given
首先介紹了m序列編碼基本理論,然后給出了m序列調(diào)相雷達多普勒預(yù)處理的方法,該方法充分利用了m序列的移位相乘后仍為m序列的特性,并且將該方法擴展到一般的二相碼序列。 - 2, studying the character of the output of the laser used on the practical qkd system, and design and made a photo-electronic detection circuit to accomplish the necessary photo ? electronic conversion for the practical qkd system . 3, designed two balance true random codes generators for qkd system, they are based on physical random source . and analyzed randomicity of the generators
三、設(shè)計制作了量子保密通信用的真隨機碼發(fā)生器，先后制成了兩臺樣機，一臺采用窄帶隨機信號源，一臺采用寬帶隨機源，并研究了隨機源對隨機碼的隨機性的影響，最后進行了隨機性的分析。 - turbo codes were presented by c . berrou in international conference on communications in 1993 . they hang convolutional code and random interleaver together to realize the idea of random coding, and adopt soft input / soft output ( siso ) iterated decoding to approach maximum likelihood decoding ( mld ) . turbo codes come closer to approaching shannon's limit
turbo碼，由c.berrou等在icc’93會議上提出，它巧妙地將卷積碼和隨機交織器結(jié)合在一起，實現(xiàn)了隨機編碼的思想，同時，采用軟輸入軟輸出迭代譯碼來逼近最大似然譯碼，具有近shannon限的性能。 - this thesis presents the acquisition method of synchronization codes and time mark codes under-20db gaussian channel . then the total step length between initial state and current state can be calculated . basing on the step length, we can deduce the current state of pseudo-random codes, and implement the acquisition of the special pseudo-random codes
本文設(shè)計出時間標記碼在信噪比達-20dd時的捕獲方案，在此基礎(chǔ)上提出了由偽碼歷經(jīng)的狀態(tài)數(shù)，計算子碼當(dāng)前狀態(tài)的方法，從而獲得了在30秒內(nèi)完成導(dǎo)航定位衛(wèi)星信號直接捕獲的方法與實現(xiàn)方案。 - this thesis presents the acquisition method of synchronization codes and time mark codes under-20db gaussian channel . then the total step length between initial state and current state can be calculated . basing on the step length, we can deduce the current state of pseudo-random codes, and implement the acquisition of the special pseudo-random codes
本文設(shè)計出時間標記碼在信噪比達-20dd時的捕獲方案，在此基礎(chǔ)上提出了由偽碼歷經(jīng)的狀態(tài)數(shù)，計算子碼當(dāng)前狀態(tài)的方法，從而獲得了在30秒內(nèi)完成導(dǎo)航定位衛(wèi)星信號直接捕獲的方法與實現(xiàn)方案。