相位延遲測定 的英文怎麼說

中文拼音 [xiāngwèiyánchícèdìng]
相位延遲測定 英文
phase-delay measurement
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 位 : Ⅰ名詞1 （所在或所佔的地方） place; location 2 （職位; 地位） position; post; status 3 （特指皇帝...
  • 遲 : Ⅰ形容詞1. （緩慢） slow; tardy; dilatory 2. （晚） late; delayed 3. （遲鈍） slow; obtuseⅡ名詞（姓氏） a surname
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 相位 : phase position; phase
  • 測定 : determine; determination; setting-out; admeasurement; assignment; assay; finding
  1. Ocean tide has an effect on gps stations and there is a strong correlation between the vertical displacement and the zenith delay at a gps station, so the effect of ocean tide on the precise determination of gps stations " coordinates, baseline vectors, and zenith delay should not be neglectable

    由於海潮對測站位移的影響以及測站垂直位移與天頂延遲存在很強的相關性，所以海潮對精密測定測站坐標、基線和天頂延遲的影響不可忽略。
  2. We build a close vibration compensation system which can successfully achieve the measurement of interference fringes movement and - vibration compensation. it puts forward pre - setting fill - in pulses method to implement phase shifting with the same pzt. with this new method, the interference fringe can be stabilized at any pre - setting phase position

    提出了填充脈沖數預設定的方法，可以將干涉條紋鎖定在任意設定的位相位置，實現了用pzt同時實現振動補償和移相測量；深入分析討論了pzt的延遲問題，創造性地提出了用多次逼近補償的辦法，給出了反饋補償的演算法，解決了補償過程中存在的系統不穩定和過補償的問題。
  3. The square detection can picks up the carrier frequencies, which is simple and has great performance. but this method can ’ t recognize the signal as spread spectrum signal. the spectral correlation detection method can estimates the chip rate of signal ’ s pn sequence

    然後，針對異步的cdma信號，採用延遲相乘的方法檢測用戶數目，同時估計出各用戶信號的幅值和相位;該方法的缺點是各用戶信號必須有一定的相差，同時用戶數不能太多。
  4. As the parts of the main contributions, the research projects focus mainly on how to improve gps surveying by reducing ionospheric delay for dual / single frequency kinematic / static users : high accuracy correction of ionospheric delay for single / dual frequency gps users on the earth and in space, china waas ionospheric modeling and the theory and method of monitoring of ionosphere using gps. the main contents of this ph. d paper consist of two parts : fisrt part - the outline of research background and the systematic introduction and summarization of the previous research results of this work

    本文主要包括兩方面的內容：一、研究背景的一般性描述及相關基礎研究的系統總結和介紹，主要涉及：地球電離層研究意義，地球電離層探測技術與相關理論研究的內容，現代大地測量中電離層問題的由來、嚴重性與新課題，地球電離層的基本特性及其對電波傳播的影響， gps定位的基本理論與方法，電離層延遲對gps測量的影響， gps的電離層延遲改正的基本方法，基於gps的電離層研究的基本原理與方法等。
  5. The experimental results show that the effect of ib is much larger than that of the noise on estimating ionospheic delay, and ib can cause ionospheric delay measurements to include systematic errors of the order of several meters. therefore, one must significantly take notice of ib and remove its negative effect, and should not casually consider ib as part of noise whenever gps data are used to fit ionospheric model or to directly calculate ionospheric delay. ( 3 ) stability of ib is studied with a refined method for separating it from ionospheric delay using multi - day gps phase - smoothed code data

    算例表明，新方法通過採用平均去噪分離方法后處理相位丞于g陀的電官唇監剝及延遲改正工論與方法的研究平滑測碼數據，求出儀器偏差並對需要實時處理儀器偏差的觀測數據進行預報改止，直接利用觀測值確定電離層延遲量，待估參數少、能消除儀器偏差的大部分影響，具有較好的精度，可作為waas及其他gps網路系統確定電離層延遲的可行的參考方案。
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