頻比 的英文怎麼說
中文拼音 [bīnbǐ]
頻比
英文
frequency ratio-
In this paper, the concept of acceleration ambiguity function ( aaf ) and acceleration resolution is put forward for the first time. using aaf, the effects of target ' s relative acceleration on several outputs of a linear - phase matched filter are analyzed, such as the output signal - noise - ratio loss, the doppler resolution, the constraint on optimal accumulative time ( opt ) and their tolerable limits
論文首次提出並研究了加速度模糊函數和加速度分辨力的有關概念，並以加速度模糊函數為分析工具，詳細討論了加速度對線性相位匹配濾波器的輸出信噪比的損失程度、對多卜勒頻率分辨能力的影響程度、對最優相參積累時間的約束關系以及線性相位匹配濾波器輸出受加速度影響的容限等問題。The realization of quick acquest under very low snr and big frequency shift is one of the key problems of lpi radar. we designed a new receiver which needs less computation spend without any decline of the performance of the radar
如何在較低輸入信噪比和較大頻偏的條件下實現擴頻碼快速捕獲是碼同步的難點，本文在不損失系統性能的基礎上，設計了一種結構簡單的接收機實現方案。Instead of calling aitken transform repeatedly, the improved algorithm call aitken transform in choosing proper occasion only once
與原演算法相比，改進演算法不頻繁調用aitken變換，而執行選擇適當時機對aitken變換調用一次的策略。Table 2. the frequencies of ace genotype and allele
表2 .各組血管緊張素轉換酶基因型和等位基因頻率的比較On the demand of application and according to the soluhons menhoned above, a method of displacement waiting auto - sy ' nchronizing is put forward, which is based on match filters. at the end a complete and speeflc set of hardware circuits and software programs which haplements the scheme, is also presented in the ancle. the synchronization system was tested in the pool and in the shallow wate near m port, the result of the test shows that its performance is satisfactory
論文著重介紹實現了跳頻通信系統同步的一般方法，並詳細分析和對比跳頻同步系統的捕獲方案，在此基礎上，提出了一個基於匹配濾波器的位移等待式自同步方案，設計、完成並給出了詳細硬體連線電路圖、軟體程序流程圖和部分程序清單，該自同步方法在實驗室水池實驗取得良好的效果，並在廈門港海域進行了現場實驗測試，具有較低的誤碼率和一定的檢測概率，結果令人滿意。As for the feature of mandarin digit speech, the existing arithmetic is cited to design the software system, and the design process is described in the part. here, the shore - time ^ relative efp ( energy - frequency - product ) is used to make the capsheaf of chinese speech signal, and the short - time relative efq ( energy - frequency - quotient ) is used to separate its syllable and consonant - vowel segment, and it improves the correct rate
本文採用的漢語語音的端點信號的檢測和清濁音信號切分方法是：短時相對能頻積的方法對漢語語音信號的端點進行檢測；短時相對能頻比的方法對語音信號的清濁音進行切分，提高漢語語音信號切分的成功率。Prescalar divider division ratio
可預置分頻器分頻比He positions the woofer to taste on the outside head in which the low frequencies are thick ? simply move around until you hear the most natural low frequencies
他把低音單元按「口味」放置在鼓皮外低頻比較有密度的地方?簡單的移動直到你聽到最自然的低頻為止。Mega - hz ~ 100mega - hz, hr analog video, k - m bit rate
1兆赫茲~ 100兆赫茲，高分率頻比視頻， 1千比特~ 1兆比特。2 through altering the length of the resonator, more clear resonator characteristic is observed, which proves that using the method of altering the length of the resonator may be a better way that using current injecting frequency modulation
浙江大學碩十學位論文2 、川改變諧振腔腔長的方法，觀測到了更為清晰的諧振曲線。證明采川改變腔長的方法來實現調頻，比采川電流調頻的方法可能更為優越。Quad fm4 - very nice midrange, good resolution, extended treble, rolled off bass
64國都fm4 ，非常華麗的中頻，很好的解析力，高頻延伸好，低頻比較收斂。In chapter two, the principle of absolutely calibrating is presented. two kinds of interference measurement methods are introduced : counting of frequency ratio method and bessel function method, and the accuracy of the two methods are analyzed
第二章闡釋了激光干涉測振原理，進而介紹了實現激光干涉測振的兩種方法? ?頻比計數法和貝塞爾函數法，並對兩種方法的精度進行了分析。After introduce the main technologies of ac regulation speed, the paper deduces in details the voltage space vector pulse width modulation ( svpwm ) technology and svpwm ' s vector selection of constant ratio of voltage and frequency
本文在介紹了交流調速系統的種種主流技術后，較為詳細地討論了電壓空間矢量脈寬調制（ svpwm ）技術，並對恆壓頻比且為同步調制時的svpwm矢量的選擇，進行了細致地推導。The gpd3402 inverter and plc being selected to set up open - loop and closed - loop speed regulation systems, applying the invariable v / f control, sensorless vector control, slip compensation, process pi and network control technologies control the hoist motor of the stacker crane
本文基於gpd3402變頻器的變頻調速方式進行應用開發，對堆跺機提升電機採用變頻調速控制，採用gpd3402變頻器及plc ，組建開環調速系統，分別應用恆壓頻比、無速度傳感器、矢量控制、轉差補償控制技術。Considering effect of damping ratio and frequency ratio to vertical amplitude of block foundation under dynamic action, this paper adopts calculating mode of mass - spring - damper and mass - spring to make account and analysis on the assumption of damping ratio and frequency ratio, then provides the range of damping ratio and frequency ratio by using two modes to calculate vertical amplitude of block foundation under dynamic action
摘要考慮阻尼比和頻比對動力作用下塊體式基礎豎向振幅計算的影響，對質彈阻計算模式和質彈計算模式在設定的阻尼比和頻比下進行計算分析，提出了在採用2種模式動力作用下塊體式基礎豎向振幅計算時的阻尼比和頻比范圍。The mobile multimedia communication system need to support the transmission of high - speed data and variable speed data compared with the ordinary spread spectrum communication. the data rate ranges from several kbps to hundred kbps for wide up to 2mbps. in order to assure different data rate to transmission in the same spread spectrum bandwidth, we need to use different lengths and orthogonal pn codes
傳統移動通信系統所提供的數據速率一般只有幾kbps ，而移動多媒體通信所要求的數據速率范圍為幾mbps甚至幾十mbps ，在同一擴頻系統內傳輸多媒體的擴頻比也不一樣，就要採用不同長度的偽碼，而且偽碼之間必須保證正交性或準正交性。Digital video is much better than analog video, the development of digital video accelerates the development of multimedia, video communication and digital tv
數字視頻比模擬視頻具有多種明顯的優點，它的發展推動了多媒體、視頻通信和數字電視等產業的飛速發展，具有重要的研究意義。Change frequency proportion hydraulic system of vacuum flatplate vulcanization machine
抽真空平板硫化機變頻比例液壓系統Compare the performance of various manufacturers codecs, including coded video bit stream syntax verification, continuous real - time histogram of video code types, and calculated performance parameters
比較各個製造商編解碼器的性能，包括編碼的視頻比特流句法驗證，視頻代碼類型的連續實時直方圖，以及計算后的性能參數。Programmatically set the buffer to the precise setting for the fastest start time based on the length and bitrate of the video and the client connection speed
根據用戶網路速度，視頻比特律（碼流速度）及視頻長度，程序精確設置緩存以獲得最小的播放延遲（從按播放鍵到看見第一個畫面的時間） 。分享友人