sequence n. 1.繼續(xù);接續(xù);連續(xù)。 2.順序;程序;次第;關(guān)系;關(guān)聯(lián)。 3.后果;結(jié)果;接著發(fā)生的事;后事;后文。 4.【數(shù)學(xué)】數(shù)列;序列;數(shù)貫。 5.【無、計(jì)】指令序列;定序。 6.【計(jì)算機(jī)】順序機(jī)〔將信息項(xiàng)目排成順序的機(jī)器〕。 7.【音樂】用不同音調(diào)反復(fù)演奏一組樂句。 8.【天主教】宣講福音前唱的圣歌。 9.【牌戲】順。 10.【電影】(描述同一主題的)連續(xù)鏡頭;片斷,插曲;場景。 a logical sequence 條理;邏輯順序。 a causal [physical] sequence 因果關(guān)系。 the natural sequence to [for] folly 愚笨行為的必然結(jié)果。 in rapid sequence 一個接著一個;緊接著。 in regular sequence 挨次;按次序;逐一;有條不紊地。 in sequence 挨次;順次;逐一。 sequence of tenses 【語法】時態(tài)的配合[接續(xù),呼應(yīng)]。
Doppler compensation method based on m - sequence signal 序列信號的多普勒補(bǔ)償方法
They have many good pseudorandom properties similar to m - sequences 它有許多類似于m -序列的偽隨機(jī)性質(zhì)
Firstly , according to the definition pseudorandom binary m - sequence and fast m - transform " theory of sutter , we have compiled arithmetic of c language 首先,我們根據(jù)m序列的定義、 sutter快速m變換的思想設(shè)計(jì)了相應(yīng)的c語言算法。
For it has many unique advantages , pseudo - noise linear m - sequence binary phased coded cw signal is widely used in the new generation air defense systems 偽隨機(jī)m序列相位編碼連續(xù)波信號體制由于其固有的優(yōu)點(diǎn),在新一代地空制導(dǎo)雷達(dá)中得到了廣泛的應(yīng)用。
The obtained ber performance of the system proposed in this paper is compared to that of conventional cdma systems using gold codes and m - sequences under awgn environments 論文還比較了基于完全互補(bǔ)碼的cdma通信系統(tǒng)和采用m序列及gold序列的傳統(tǒng)cdma通信系統(tǒng)在awgn信道下的誤碼率性能。
Based on the statistics characteristic of prc - phase - modulation cw phase - array guidance radar , this thesis discusses the signal processing method and cfar algorithm of multiple repetition frequency pseudo - noise m - sequence phase coded signal 本文結(jié)合偽碼調(diào)相連續(xù)波信號體制的特點(diǎn),深入研究了多參差重復(fù)頻率偽隨機(jī)m序列相位編碼信號的處理方法和恒虛警檢測算法。
Finally , we carry out the theoretic analysis on the whole communication system . by comparing the simulation analysis results with m - sequence and gold sequence , we further validate the good performance of the ( cd ) 2ma communication system 最后,對整個通信系統(tǒng)的性能和仿真數(shù)據(jù)結(jié)果進(jìn)行了分析,并與傳統(tǒng)的小m擴(kuò)頻序列、 gold擴(kuò)頻序列進(jìn)行了比較,進(jìn)一步驗(yàn)證了混沌數(shù)字碼分多址通信系統(tǒng)的優(yōu)良性能。
( 4 ) in the discrete wavelet transform domain , the watermark sequence is modulated with m - sequence at first , then the watermark information is embedded by quantifying the coefficient of the transform domain . the quantification procession is given ( 4 )在離散小波變換域,先對水印序列進(jìn)行擴(kuò)頻調(diào)制,然后通過對變換域系數(shù)進(jìn)行量化來嵌入水印信息,給出了量化方案;在水印的提取過程中不需要原始音頻信號的參與。
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(shù)字脈沖壓縮的優(yōu)點(diǎn)及其實(shí)現(xiàn)方法,接著討論了相位編碼信號的特點(diǎn),并詳細(xì)分析了巴克碼和m序列這兩類典型的二相碼信號。
Then taken four kinds of maps for examples , comparing with m - sequence , their properties are calculated , verifying the advantages of the chaotic sequence generated by the new method . after this , an improved scheme is discussed - - using m - sequence to change the sequence ’ s turn and verifying that the permutation parameters have effect on improving the sequence ’ s properties . in chapter 5 , monte carlo simulation method is used to test performances of our sequences ’ applications in the given model of direct spread spectrum cdma system , and results of error rate of the system are given ; the comparing resuls of performances of anti - multi - access interference and anti - multi - address interference of different pn sequence is also shown in this thesis 本文首先對擴(kuò)頻通信中常用二進(jìn)制偽隨機(jī)序列的產(chǎn)生方法、性能特點(diǎn)進(jìn)行了總結(jié),指出了現(xiàn)有二進(jìn)制偽隨機(jī)序列的應(yīng)用局限性;其次,根據(jù)混沌非線性系統(tǒng)特征,深入研究了混沌數(shù)字序列的產(chǎn)生方法;在此基礎(chǔ)上,提出了一種新的產(chǎn)生方法中間抽取法,然后,以四種混沌映射系統(tǒng)為例,對其所產(chǎn)生的混沌數(shù)字序列進(jìn)行了偽隨機(jī)特性實(shí)驗(yàn)數(shù)據(jù)分析,并與m序列進(jìn)行比較,結(jié)果說明了混沌數(shù)字序列代替?zhèn)鹘y(tǒng)擴(kuò)頻序列的優(yōu)點(diǎn),同時驗(yàn)證了新方法的可行性。