星表誤差 的英文怎麼說

中文拼音 [xīngbiǎowùchā]
星表誤差 英文
ephemeris error
  • 星 : 名詞1 （夜晚天空中閃爍發光的天體） star 2 [天文學] （宇宙間能發射光或反射光的天體） heavenly body...
  • 表 : Ⅰ名詞1 （外面;外表） outside; surface; external 2 （中表親戚） the relationship between the child...
  • 誤 : Ⅰ名詞（錯誤） mistake; error Ⅱ動詞1 （弄錯） mistake; misunderstand 2 （耽誤） miss 3 （使受損害...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 誤差 : error
  1. Our test with mock samples shows furthermore that one can discriminate among such models already with currently available observational samples ( if the measurement error of the redshift is negligible ) which have a typical error of 80kms - 1. the error will be reduced by a factor of 2 if the samples are increased four times. we also show that an errroneous assumption about the geometry of the universe and different infall models only slightly change the results

    結果表明： （ 1 ）若用現有的觀測樣本（特徵誤差為80kms ~ （ - 1 ） ）我們已經可以限制星系形成模型，而如果樣本容量增長到4倍，誤差將減半； （ 2 ）錯誤地假設宇宙幾何和星系平均內落對結果只有微弱的影響。
  2. Its main contributions include the following several aspects : firstly, the dissertation constructs the mathematic model of short baseline orientation determination using two geostationary satellites and analyses the applicable conditions of carrier phase interferometry. orientation determination precision is analysed in depth through both the conventional linearized method and monte - carlo computer simulation method, and the mathematical simulation results show that the linearized method has the shortcoming of fairly low elevation error analysis precision in high latitude area so as not to be very appropriate there. by analyzing the definite factors influencing orientation precision, the dissertation develops the concept of orientation dilution of precision, which uncovers the internal cause of exotic error behavior of bi - satellite orientation, and has important guiding significance for practical engineering applications

    本文系統地研究了基於「北斗一號」衛星載波相位干涉測量原理實現地球靜止雙星定向的相關技術，主要研究成果包括以下幾方面:首先，建立了利用兩顆地球靜止軌道衛星進行短基線定向的數學模型，分析了載波相位干涉測量的適用條件;採用傳統的線性化解析法及蒙特卡洛隨機模擬法兩種途徑對雙星定向的精度進行了詳細分析，數學模擬結果表明在高緯度地區線性化解析法由於俯仰角誤差分析精度略有下降而不太適合;在分析定向精度確定性影響因素的基礎上，提出了雙星定向精度衰減因子odop的概念，揭示了雙星定向誤差特殊表現的內部機理，對實際工程應用具有重要的指導意義。
  3. Astrometric limit : the maximum residual in the place of a reference star, specified in arc seconds

    天文測量誤差極限：參考星位置對應的最大誤差，用角秒表示。
  4. The research on autonomous navigation and orbital keeping technology of geosynchronous satellites : selecting position vector in the inertia space and longitude, latitude, radial errors in the hill equation as state variables, the precision of orbit determination caused by track dynamic model error, sampling period, and sensor measurement and install error is analyzed

    同步衛星自主導航與軌道保持技術研究：分別選取慣性空間位置矢量和採用hill方程表示的經、緯、向徑誤差作為狀態量，分析軌道動力學模型誤差、采樣周期以及敏感器測量、安裝等誤差對定軌精度的影響。
  5. Simulation results indicate that the algorithm can reduce the delay ' s uncertainty range greatly, even with great position errors the uncertainty range still can be reduced to the half, and is effective for the fast acquisition of long cycle code

    數值計算表明，演算法能夠大大壓縮不同導航星和不同場景用戶之間傳播時延的不確定范圍，即使在用戶與衛星位置誤差較大的惡劣應用背景下也能將不確定范圍壓縮一半，從而有效地輔助長碼快捕的實現。
  6. The results of simulation show that the rule will help reduction of the positioning error

    模擬結果表明，依據選星策略選擇定位衛星能夠明顯減小定位誤差。
  7. Simulation results reveal that ipos protocol could solve the problem of high error bit rate with adoption of the error control scheme in the data link layer and adaptive coding modulation

    模擬結果表明， ipos協議通過採用鏈路層差錯控制和自適應編碼調制方法，解決了衛星通道的高誤碼率現象。
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