pseudo-random sequence造句
例句與造句
- Evaluation for uniformity of pseudo - random sequences
偽隨機(jī)序列的均勻性評(píng)價(jià) - Investigation and realigation of pseudo - random sequence generator
偽隨機(jī)序列發(fā)生器的研究與實(shí)現(xiàn) - In former method , the watermark is usually the pseudo - random sequence
以往研究的水印多為無(wú)意義的水印，例如一個(gè)隨機(jī)數(shù)。 - Statistical analysis of the orthogonality between images and pseudo - random sequences
基于統(tǒng)計(jì)數(shù)學(xué)的偽隨機(jī)序列與圖像正交性分析 - Discuss the methods to generate pseudo - random sequences and property of them ; 2
討論了偽隨機(jī)序列的產(chǎn)生方法及其性能分析； 2 - It's difficult to find pseudo-random sequence in a sentence. 用pseudo-random sequence造句挺難的
- Use the high - quality pseudo - random sequence to create pseudo - random fsk / psk signal ; 3
用產(chǎn)生的高質(zhì)量偽隨機(jī)數(shù)設(shè)計(jì)偽隨機(jī)fsk / psk信號(hào)； 3 - Algorithm and design for pseudo - random sequence ultrasonic spread spectrum distance measurement system
偽隨機(jī)碼超聲擴(kuò)頻測(cè)距系統(tǒng)設(shè)計(jì)與算法 - Chapter six studies characteristics and implementations of pseudo - random sequence generator and data scrambling , and fulfills the de - scrambling function with asic
第六章討論了偽隨機(jī)序列和數(shù)據(jù)擾碼的特點(diǎn)，并給出了其asic實(shí)現(xiàn)方案。 - Pseudo - random sequences with optimal properties such as correlation , high linear spans , balance and long period are widely used in cdma system , spread spectrum and hopping communication systems
具有優(yōu)良相關(guān)性，大線性復(fù)雜度，平衡性，長(zhǎng)周期的偽隨機(jī)序列廣泛應(yīng)用于cdma系統(tǒng)，擴(kuò)跳頻通信系統(tǒng)。 - Most of the former watermark techniques usually use pseudo - random sequence as watermark , which produce a sequence randomly in arithmetic for embedding . it only can detect whether the watermark is still remaining or not
以往研究的水印多為偽隨機(jī)序列，在算法中自動(dòng)產(chǎn)生一個(gè)隨機(jī)序列將其嵌入，而且檢驗(yàn)時(shí)只能判斷此偽隨機(jī)序列是否存在。 - This paper is focused on images watermarking algorithms . watermark casting operates in frequency domain , embeds pseudo - random sequence of real number in selected coefficients without image degradation . a blind watermark retrieval technique that can detect the embedded watermark without resorting the original image is proposed , so that the proposed techniques represents a major improvements to those relying on the comparison between the watermarked and original image , which is not practical for a huge image database
本文主要研究針對(duì)圖像水印系統(tǒng)的算法研究，采用偽隨機(jī)序列作為水印信號(hào)，利用變換域系數(shù)作為水印的載體，在不降低圖像質(zhì)量的前提下達(dá)到嵌入水印的目的，在恢復(fù)水印的過程中無(wú)需原始圖像的參與，相比較那些需要利用原始圖像恢復(fù)數(shù)據(jù)的系統(tǒng)，文中所提出的方案更具有實(shí)用性。 - 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布，由所觀測(cè)目標(biāo)的頻譜信息提取出概率密度函數(shù)決定頻率編碼序列的分布；相位編碼為二元的偽隨機(jī)序列，采取均勻的二相編碼，消減同頻脈沖帶來的過高的相關(guān)函數(shù)的旁瓣；而失配相位為與頻率編碼相一一對(duì)應(yīng)于各子脈沖中。 - In the part of image encryption , chaotic map based on kolmogorov flow is used to permute . changing the traditional stream - cipher , new chaotic pseudo - random sequence generator based on the theory of product cipher is presented to substitute the pixel . based on it , linear map to confuse the pixel is presented further , withstanding statistical attack
在圖像加密方面,采用基于kolmogorovflows的混沌映射對(duì)圖像進(jìn)行置亂,對(duì)傳統(tǒng)流加密進(jìn)行改造,提出了基于乘積密碼理論的新型混沌偽隨機(jī)序列發(fā)生器完成象素的混淆,并在此基礎(chǔ)上進(jìn)一步采用線性映射對(duì)象素進(jìn)行擴(kuò)散以抵抗統(tǒng)計(jì)攻擊。 - In the part of voice encryption , spatiotemporal chaotic system ( ocoml model ) and lfsr are used to generate multidimensional pseudo - random sequence . this sequence has a longer period , better randomicity , passing the verification of fips 140 - 2 security requirements . using the key stream generated by it to encrypt the voice gets a better security
在語(yǔ)音加密方面,本文利用時(shí)空混沌系統(tǒng)(單向耦合映象格子模型)與線性移位寄存器產(chǎn)生了高維的偽隨機(jī)序列,該序列周期很長(zhǎng),具有更強(qiáng)的隨機(jī)性,通過了fips140 - 2的安全性能驗(yàn)證,利用其作為密鑰流對(duì)語(yǔ)音信號(hào)進(jìn)行加密,獲得了更高的保密性。 - In this paper we adopt pseudo - random sequence or gray level image as the watermark , choose the dwt coefficients as the carrier , then embed the watermark into the carrier imperceptually . one algorithm accomplishes blind extracting . it presents a symmetric algorithm based on shuffling technique
采用偽隨機(jī)序列或灰度圖像作為水印信號(hào),利用dwt變換系數(shù)作為水印的載體,在不降低圖像質(zhì)量的前提下達(dá)到嵌入水印的目的,部分方案在恢復(fù)水印的過程中無(wú)需原始圖像的參與。
更多例句： 下一頁(yè)