frequency difference造句
例句與造句
- Analytic technique of frequency difference for discrimination of cavity fillers
溶洞充填物判識的頻率差異分析技術(shù) - It also evaluates the performance of frequency difference estimation of afc
分析了多徑條件下afc頻差估計的性能。 - The algorithm solves the question of frequency difference between uplink and downlink
解決了上、下行鏈路的頻差問題。 - In the experiment , we first get all window sequences and the relative difference a which reflects the frequency difference of window sequences
對序列中的所有窗口序列都給出相對差，根據(jù)分別得到編碼區(qū)序列和非編碼區(qū)序列的特征序列。 - These items do not need to be controlled for lexical frequency differences , but you need to say which words in the items need to be matched for lexical frequency in a real experiment
這些項目不需要控制詞頻差異，但是你需要說出項目中的哪些詞需要與實驗中的實際詞頻相匹配。 - It's difficult to find frequency difference in a sentence. 用frequency difference造句挺難的
- A field ambient vibration test of the qingzhou mingjiang cable - stayed bridge was carried out , and all the 168 stay cables " tensions are obtained by the proposed frequency differences method
對福州青洲閩江斜拉橋拉索進行了環(huán)境振動測試與分析，使用頻差法得到了全部斜拉索的索力。 - Secondly , the dissertation presents a 3 - dimensional searching method with afc and pn code synchronization and adaptive array convergence in order to accurately estimate the frequency difference between the received signal and the local oscillator
其次，為了準確估計接收信號和本地振蕩器之間的頻差，提出了afc 、 pn碼同步、自適應(yīng)陣收斂的三維搜索策略。 - 3 . the frequency differences are determined by both the power spectral density ( psd ) and cepstrum of ambient vibration measurements . a matlab - based toolbox is developed , in which the differences of the higher adjacent frequencies can be easily evaluated
3 .使用功率譜頻差法和倒頻譜頻差法，開發(fā)了基于matlab平臺的斜拉索環(huán)境振動基頻識別gui工具箱。 - And it presents an estimation method for frequency difference by means of data synchronization selecting the time window of afc frequency difference estimation hi order to solve the problem that data symbol transition induces an enormous error of frequency difference estimation
針對afc頻差估計中數(shù)據(jù)突變引起頻差估計較大誤差的問題，提出了利用數(shù)據(jù)符號同步對afc頻差估計時間窗口選擇的afc頻差估計方法。 - The main technique of solid state memory system include the techniques of design for reliable and lower power dissipation and valid data sampling , data framing and encoding , data storing and retrieving on high speed , data disturbing and frequency difference processing
星載固存系統(tǒng)設(shè)計的主要技術(shù)包括可靠性設(shè)計、低功耗設(shè)計、有效數(shù)據(jù)采樣、數(shù)據(jù)組幀編碼、數(shù)據(jù)高速存儲及回放，數(shù)據(jù)加擾，輸入輸出頻差兼容設(shè)計等技術(shù)。 - The methods of direct measurement with low precision such as frequency and time interval methods and the methods of indirect measurement with high precision such as beat frequency method , dual mixer time difference method and frequency difference multiplying method are supported on the platform . the fundamentals of each method are studied . the quantization error is analysed and the illustration is given for each method
該平臺支持直接頻率和時差法兩種較低精度的測量方法以及雙混頻時差法、差拍頻率法和頻差倍增法高精度的簡接測量方法，本文研究了各種測量方法的原理，對各種測量方法的量化誤差作了分析，并給出具體的實例。 - The emphasis was put on the main factors affecting its performance , such as : drift of the average frequency of interferometer ; drift of frequency difference of interferometer ; the changes of the interference add - on term of the gaussian beam during the measurement and its effects on the phase changes , as well as the relationship between the changes of the interference add - on term of the gaussian beam during the measurement with the movement of the measurement mirror
對雙頻激光干涉儀的工作原理進行了理論分析，著重分析了其主要影響因素：雙頻激光平均頻率漂移；雙頻激光差頻漂移；高斯光束干涉附加項在測量過程中的變化及其對相位變化的影響，與測量鏡運動引起的程差變化的關(guān)系。 - The frequency difference sensitivity of the modulation mode and the ability to overcome distortion by limiting amplitude of the signal and to overcome interference also affect the performance , too . in this paper , the relationship between the ability to overcome interference and the modulation mode is discussed at first . then the characters in some aspects specif ' ed above of some common modulation mode such as mfsk mpsk ofdm are studied . on this base , some according solutions to the problem of the different frequency - hopping system are put forward . in the past half of this paper , the realization scheme , pcrforemance and improving measures of ofdm are studied
本文首先較詳細地討論了跳頻抗干擾的能力與調(diào)制制度的關(guān)系，接著分別研究了幾種常用調(diào)制方式( mfsk ， mpsk ， ofdm )上述幾方面的性質(zhì)，針對各跳頻系統(tǒng)存在的問題提出了相應(yīng)解決方案，在本論文后半部分重點討論了ofdm跳頻系統(tǒng)的實現(xiàn)方案、性能及改進措施。 - On the other hand , we give the condition of correctly solving range ambiguity and performance calculating formula of for stagger frequency difference ; condition of constraint for deciding stagger parameter value ; range " s analysis result for targets with multiple scattering centers or low altitude . this part includes chapter 2 , 3 , 4 , 5
另外，我們還給出了參差比相測距正確解模糊的條件以及參差測距下的性能公式；提出了決定參差參數(shù)取值的約束條件；給出了多散射中心目標和低空目標的多頻連續(xù)波測距性能的結(jié)論。 - Therefore , the three fundamentals required to obtain high precise measurements are : 1 ) frequency stability and frequency difference stability of the double - frequency laser source as well as the stable equivalent length of bore ; 2 ) the measuring beam and the reference beam are placed very co - axially ; 3 ) capability of recording the sub - division of the period of phase change and a reversible counter system
因而干涉儀系統(tǒng)達到高精度的基礎(chǔ)是：頻率及頻差穩(wěn)定的雙頻激光源、穩(wěn)定的等效腔長；測量光與參考光合光后有很高同軸度的光路結(jié)構(gòu)；能可靠記錄相位差變化周期數(shù)的細分及可逆計數(shù)系統(tǒng)三部分。
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