phase code 中文意思是什麼
phase code
解釋
相位編碼-
For the anticounterfeiting of printings ( such as certificate ), the existent many ways ( such as rainbow holograms ) are not available as the need for special use : anti - distortion and anti - copy. basing in the double - random - phase transform, this article puts forward a new way that two - dimensional bar code is used as anticounterfeiting label with anti - printing ? scanning and anti - damage properties. the major job are : ( 1 ). basing in the ascii codes, numerals and alphabets are encoded and subsequently transformed into two - value bar code matrix figure. later, using amplitude - based double - random - phase transform, the enciphered gray scale figure is formed. by computer simulation ( 4f system ) and printing as well as scanning ( 20 times ), we get the result that the gray scale figure with little miscoding rate ( 0. 0026 ) by “ matrix expanding way ”
本文主要開展了以下三項研究工作: （ 1 ） .用自定義編碼方案，將數字和字母（ ascii碼）轉換成二值條碼圖;對該圖形進行振幅型雙隨機相位加密變換，得到原信息的加密灰度圖;通過4f光學系統計算機模擬和列印-掃描實驗，證明本文提出的「矩陣擴展法」灰度圖具有較小的誤碼率，對於20次列印-掃描實驗，誤碼率不大於0 . 0026 。 -
It makes use of resource of the chip, realizes the development of every module, achieves distilling of telegraphese, builds up new frame, calculates the position and provides external interface. in the section of calculating the position, the author combines the two measures of carrier phase position and code position. finally, in the platform of matlab, the author completes the function simulation of main modules
概述了接收機的設計原理;詳細描述了基於ti公司的tms320c6713dsp晶元的系統程序設計中各模塊的實現，利用該晶元的資源，實現各模塊的調度，完成對導航電文的提取，重新組幀，定位解算以及對外介面;在解算部分，把載波相位定位與碼測距定位相結合，利用載波相位對偽距的平滑來提高定位精度;在matlab平臺下進行了各模塊的功能模擬測試，以模擬結果的圖表來分析說明了載波相位平滑偽距的兩種演算法能使定位精度有一定的提高。 -
At first the merits and implementation of the digital pulse compression subsystem are introduced in this paper. then the characteristics of phase coded signals are discussed and the two classic binary phase codes ? ? barker code and m - sequence are dealt with in details in the following
文中首先綜述了數字脈沖壓縮的優點及其實現方法，接著討論了相位編碼信號的特點，並詳細分析了巴克碼和m序列這兩類典型的二相碼信號。 -
In the fourth chapter, firstly, the fsk / psk signal function is presented, then, the signal which frequency and phase are modulated by costas code and barker code for each are analyzed at the same time. after that, the target returns and clutter returns are analyzed and modeled. at last, both of the time correlation characteristics and space correlation characteristics are theoretically analyzed
在第四章中，首先給出fsk / psk信號的表達式，並對一種分別採用costas碼和barker碼進行頻率和相位調制的fsk / psk信號進行分析，然後對fsk / psk信號的目標回波和雜亂回波進行分析與建模，接著，對雜波信號的時間相關性和空間相關性進行理論分析，由分析結果可知， fsk / psk雷達雜波的時間相關性不變、空間相關性增強。 -
These embedded strings are converted at bind time based on the code page which is in effect during the bind phase
在綁定時，將基於在綁定期間有效的代碼頁轉換這些嵌入的字元串。 -
According to the present status of studying the solar flare using gps, a new algorithm of processing gps data studying the solar flare is brought forward : after the instrumental bias has been determined, with the data of dual - frequency gps code and phase and navigation message, the vtec at the satellite ' s epp can be worked out
根據現在研究太陽耀斑的實際情況，提出了利用gps研究太陽耀斑的數據處理方法：利用雙頻觀測值確定出儀器偏差后，再利用碼和相位觀測值，結合導航電文就可以求出電離層交叉點的沿天頂方向上的電子總量vtec值。 -
When receiving the uplink frame, olt searches the synchronization pattern to quickly capture the phase information of code flows and achieve the bit synchronization. based on the delimitation pattern, it then delimits the atm cell to accomplish the byte synchronization
Olt在接收上行幀時，搜索同步圖案，並以此快速獲取比特流的相位信息，達到比特同步；然後根據定界圖案確定atm信元的邊界，完成位元組同步。 -
This article analyses the signal characteristics of several typical cw radars, and presents the principle and application of doppler radar. as one focal point, this article researches the generation and math characteristics of pseudorandom code modulated signal, analyses the spectrum of pseudorandom code phase modulation radar signal, and presents this kind of signal ' s application in distance and speed measurement. this article also researches the application of mono - pulse amplitude comparison radar in angle measurement finally, this article elaborates the working process of crs in uast
本文分析了幾種典型的連續波雷達信號的特性，介紹了多普勒雷達的原理和應用；研究了偽隨機編碼信號的產生和數學特徵，著重分析了偽碼調相連續波雷達信號的頻譜，及其在雷達測距、測速方面的應用；研究了單脈沖幅度比較體制在雷達測角中的應用；最後，闡述了超近反導系統中復合體制雷達的工作過程。 -
And the code selection of good non - periodic auto correlation in pulse internal phase modulation will benefit the suppress of range side - lobe
脈沖內部調相選用具有良好非周期自相關性能的編碼還有利於距離旁瓣的抑制。 -
A pn code phase acquisition with non - coherent sequential detection
基於非相干序貫檢測器實現的偽碼捕獲器 -
In wcdma system which uses direct sequence to spread spectrum, the spread spectrum code ( pn code ) phase of the receiver must be synchronized with that of the received signal precisely to despread and demodulate the signal correctly. multipath channel exists in the mobile communication environment for the radio signal reflection by obstacles between transmitters and receivers. by using the autocorrelation of the spread sprectrum code, rake receiver can process received signals and therefore multipath components can be resolvable
在wcdma系統中，為正確解擴解調接收到的擴頻信號，接收機本地產生的擴頻碼（ pn碼）相位必須和接收信號中的擴頻碼相位完全同步;同時移動通信環境中的傳輸信號由於接收機和發射機之間的直達路徑有可能被建築物或其他障礙物所阻礙，總是經過折射或反射的多條路徑后才到達接收機，從而產生多徑通道。 -
Synchronization technique of spread spectrum code is utilized in two stages. multipath searcher coarsely estimates the pn code phase and code tracking confirm the pn code phase precisely
這需要採用擴頻系統中擴頻碼同步技術，即:多徑搜索粗略地估計pn碼相位，同步跟蹤精確確定pn碼相位。 -
This might be useful for languages that support separate compilation, where it is only at link phase that it becomes known whether any type is actually referenced by other code
這對于支持單獨編譯的語言可能很有用，在這類語言中，只有在鏈接階段才能知道任何類型是否被其他代碼實際引用。 -
Detection performance and anti - jamming capability of phase - coded radar are also analyzed in this paper. the computer simulation shows that phase - coded radar has better property of suppressing jamming such as shortwave, gauss noise and binary phase code than lfm radar
本文還分析了相位編碼雷達的檢測性能和抗干擾能力，模擬結果顯示相位編碼雷達抗短波、高斯白噪聲、二相碼等干擾的能力優于線性調頻雷達。 -
Secondly, with combination of a certain type of radar, the application of genetic algorithm to optimum code selection and the iteratively reweighted least - square mismatched filter design for sidelobe reduction are discussed. the favorable experimental results are obtained, especially for 64 phase code
最後，我們結合某型雷達，以64相碼信號為例，說明了遺傳優化演算法在編碼搜索中的優越性，並採用了迭代加權最小二乘演算法來設計失配濾波器以達到相位編碼信號的優化副瓣抑制目的，且給出了相應的模擬結果。 -
Frequency code is not uniformity distribution and keeps to a probability distribution function defined by the spectral characteristics of the target of interest. the phase code is equally duality pseudo - random sequence and used to reduced the sidelobes of the signal correlation function. and the mismatch - phase sequence is corresponding with the frequency sequence one by one
而頻率編碼為不均勻分佈，由所觀測目標的頻譜信息提取出概率密度函數決定頻率編碼序列的分佈；相位編碼為二元的偽隨機序列，採取均勻的二相編碼，消減同頻脈沖帶來的過高的相關函數的旁瓣；而失配相位為與頻率編碼相一一對應于各子脈沖中。 -
A pseudo - continue waveform system of long two - phase code with a high duty ratio is presented and its signal processing is discussed
摘要提出了一種高占空比長二相碼準連續波雷達體制，並就其中的信號處理問題展開了討論。 -
The information management code of lockup for prisoners awaiting trial. part 10 : lawsuit phase code
看守所在押人員信息管理代碼.第10部分：訴訟階段代碼 -
This chapter introduces one technique which based on encrypting the access of storage data, this can be done by coding the phase of reference beams by use of orthogonal - phase - code
介紹了一種基於對接入加密數據通道進行加密的方法，即對參考光的相位進行正交相位編碼； 4 .雙隨機相位編碼加密光存儲。 -
This chapter discusses two models of optical information channel of holographic system : intensity model and amplitude model, and discusses some methods overcoming noises by use of these two models. s. encypting holographic data storage based on orthogonal - phase - code multiplexing
詳細講述了光通道的兩種模型：光強度模型和光幅度模型，並利用這兩種模型討論了克服噪聲的一些措施； 3 .正交相位編碼全息光存儲。
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