星高誤差 的英文怎麼說

中文拼音 [xīnggāowùchā]
星高誤差 英文
star altitude 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...
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 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. 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。
  2. To overcome this problem, the author researching from the core of active disturbance rejection control theory " fal function ", having the advantage of : small errors, large gains ; big error, the small gains character, designs a nonlinear pid gesture controller. simulation results showed that the design of nonlinear pid controller shortening the small satellite gesture catch time and improving the attitude control precision

    為了克服這個問題，本文從自抗擾控制理論中的核心「 fal函數」出發，基於fal （ e ， ， ）函數具有:小誤差，大增益;大誤差，小增益的特性，設計了一種非線性pid姿態控制器，比較好的縮短了小衛星姿態捕獲時間，一定程度上提高了姿態控制的精度。
  3. The localization of mobile object is accomplished by nonlinear kalman filter. based on the formulae of localization errors, the rules are analyzed, which describe the relationship between the localization precision and the constellation factors, such as constellation shape, the height of satellite. the method to design the constellation is presented with the help of these rules

    論文利用非線性kalman濾波設計了三星時差定位星座對運動目標的定位定速演算法；根據定位誤差的解析公式，利用模擬方法分析了三星時差定位星座的星座構型和衛星高度等因素對定位精度的影響規律，並依據定位精度影響規律，研究了三星時差定位星座的星座設計問題。
  4. Use the magnetic vector for the observation information, the paper estimate the location and rate of the satellite, analysis of simulation results and the sources of error. to further enhance navigation accuracy, the paper study the unscented kalman filter, compare with the extend kalman filter. in the same initial conditions of the extend kalman filter, we do the simulation

    其次，基於磁環境模擬系統的測量數據，本文研究了擴展卡爾曼濾波演算法，建立了衛星的運動學和動力學方程，以地磁場矢量為觀測信息，對衛星位置速度進行了估計，並分析了模擬結果及誤差來源，為了進一步提高導航精度，本文又研究了unscented卡爾曼濾波演算法，給出了原理及步驟，並與擴展卡爾曼濾波進行了比較分析。
  5. Study on effect of altitude error on position precision of double - star positioning system

    高程誤差對雙星定位系統定位精度的影響研究
  6. The thesis develops new techniques on the basis of the relating documents - - construct of reduced 2 - d indexed layered guide star database. the database is a uniform storage reduced guide star database with improved 2 - d index it divides guide stars to local bright star ( lbs ) and local dim star ( lds ), and gives priority to lbs in making star triangle to reduce the number of stored triangles. it uses 2 - d na index and linear storage to improve the hit the target rate, save the memory for index

    精簡二維索引分層導航星庫，作為一種統一存儲的精簡、索引導航星庫，採用星的分層方法精簡導航星庫，以局域亮星為主構造導航星三角形，減少了星三角形的數量，節約了存儲空間；採用索引方法檢索導航星三角形，提高了命中效率，節約了搜索時間；採用n劃分和線性存儲的方法精簡索引，提高了二維索引的存儲效率；採用索引的邊緣擴充方法，可以在一定程度上減少位置誤差的影響。
  7. In the management of city transportation, navigation of satellite cannot meet the practical requirement because of shielding and interfering of satellite signal. therefore, map matching and dead - reckoning ( dr ) is used to assistant navigation. this combination is defined as gps / dr integrated navigation system, in which the map matching is used for correcting the orientation and distance errors of dr

    而在城市交通管理的應用中，由於衛星定位信號經常會受到建築物的遮擋和干擾，衛星定位無法滿足導航的實際要求，通常需用地圖匹配和航位推算器（ dead - reckoning ， dr ）的方法進行輔助導航，這種導航方式稱為組合導航系統，其中地圖匹配可用來修正dr的方向和距離的系統誤差，以便在衛星信號失鎖時，提高dr自主定位的精度。
  8. Fully autonomous layered star identification algorithm, which divides the detected stars to lbs and lds, gives priority to lbs in making star triangle and identification, so can find the matching star quickly. it takes the maximum matching reliability and expanding index at the edge of na to reduce the influence of position error, magnitude error and fake star, so have high identification correct rate. it can be used for full and local sky star identification

    全天自主分層星識別演算法，採用分層的方法，以局域亮星為主構造和識別觀測星三角形，減少了待識別的觀測星三角形數量，具有較高的識別速度；採用最大匹配可信度和索引的邊緣擴充方法，可以在一定程度上解決位置誤差、星等誤差和偽星干擾等問題，具有較高的識別準確率；既可以進行全天自主星識別，又可以進行局部星識別。
  9. 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。
  10. Both the popularity rating and approval rate of donald tsang have dropped a little, but within the margins of sampling error, in the last two weeks before his technical resignation

    05曾蔭權的支持度和支持率在辭職參選前兩星期內有輕微下跌，但都在抽樣誤差?圍之內，支持率保持高企。
  11. The star calibration system, which is one of methods to calibrate precision and adjust tolerance of tracing and measuring devices in fields, has been widely applied to high precision tracing and measuring devices such as photoelectric theodolites, radars, etc. combining with many researching fields such as astronomy, computer control technology, communication, science engineering algorithm, etc, star calibration software have characteristics of large size, long development period, etc, but their inherent coherence and constant establish the base of abstract and reuse

    星體標校系統是實現跟蹤測量設備外場精度標校和誤差調整的方法之一，廣泛應用於光電經緯儀、雷達等高精度跟蹤測量設備中。星體標校軟體集天文、計算機控制技術、通訊、科學工程計算等眾多知識領域，具有軟體規模大，開發周期長等特點，但其本身存在一致性和不變性，奠定了它們的可抽象性和可復用性的基礎。
  12. In order to make sure the spacecraft can fly in any condition here adopted the error model was derived by friedland in 1978, which was based on the earth centered inertial ( eci ) frame

    為了能有利於衛星等航天器高精度自主導航本文採用1978年由friedland提出的基於慣性坐標系下的慣性系統誤差理論推導出另外一種基於慣性坐標系下的慣性導航系統。
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