星形幾何 的英文怎麼說
中文拼音 [xīngxíngjīhé]
星形幾何
英文
astral geometry-
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。Yes, rendering obsolete popguns, elastic airbladders, games of hazard, catapults. they comprised astronomical kaleidoscopes exhibiting the twelve constellations of the zodiac from aries to pisces, miniature mechanical orreries, arithmetical gelatine lozenges, geometrical to correspond with zoological biscuits, globemap playingballs, historically costumed dolls
就是要把紙槍橡膠浮囊擲骰子游戲和彈弓排斥出去其中包括展示白羊宮乃至雙魚宮這十二宮星座的天體萬花筒小型機械裝置的太陽系儀算術用菱形果子凍相當于動物餅乾的幾何圖形餅干游戲用地球儀皮球身穿歷史服裝的玩偶。By means of images processing of satellite, geometrical correction of images from uav rs system was accomplished by polynomial. in the processing of images of wuming in guangxi province, a set of scan large - scale relief maps were used
借鑒衛星影像的處理方法，將目標區現有的大比例尺地形圖數字化后，利用多項式法完成了廣西武鳴城區無人機遙感飛行試驗影像的幾何糾正，並取得了較好的效果。By analyzing phase angle of meshing geometric drawing position, the theoretical formula of cycloid gear actual operating space of cycloid planetary gear speed reducer is driven, at the same time, fitting a curve, and discussing engineering significance of function curve to combine reality
摘要通過分析嚙合相位角幾何圖形的位置，推導出擺線針輪行星減速器中擺線輪實際工作范圍的理論公式，畫出了嚙合相位角函數的擬合曲線，並結合實際討論其函數曲線的工程意義。The results obtained from the simulation example suggest a good effect and significance of using gps simulation data for demonstrating the feasibility and validity of an od design or an algorithm of certain problem. 4 the ill - conditioned problem existing in relative kinematic od using gps carrier - phase data is discussed and then some preliminary efficient approaches for solving this problem are given out there are several reasons that cause the ill - condition pro
（四）探討了星載gps相位相對定軌中的病態性問題，並嘗試給出了較有效的解決方案地面基準站、低軌衛星和gps衛星之間的幾何形狀分佈不佳，差分技術的應用使得模糊度之間及模糊度和三維坐標向量改正之間產生較強的相關性，往往都會導致星載gps定軌中的法矩陣的病態性。Though the hill equation was improved it cannot satisfied with the long distance navigation. here is considering the main satellite the following satellite and the target satellite format a triangle in the space which was useful in the relative navigation. the orbit of the following satellite was resolved by calculate the hill equation
盡管如此改進的hill方程依然不能滿足遠距離的相對導航，當從星在攔截目標星時，若目標星在攔截過程中發生軌道機動遠離主星，這里考慮到在已知從星軌道的前提下利用主從星以及目標星在空間形成的三角關系這一有利條件進行幾何法定位的研究，並通過數學模擬對其誤差大小進行了分析。This paper improved these methods based on the requirements 0 there are two methods for conventional orbital control : one is algebra method which deals with the problems by optimization based on orbit geometry characteristics the first method is applied when we adopt impulsive control, but in the multiobjective cases the method has its limitation
傳統的軌道控制一般基於兩種方法，一種是代數優化方法，這種方法與衛星的軌道幾何特性相結合進行分析，將軌道的幾何特性和優化指標用代數方程的形式表示出來進行求解，這種方法主要用於沖量式控制。After the entry of matsui and muto into the city, the situation did not improve for weeks
松井和武藤進入南京后，形勢連續幾個星期沒有任何好轉。Investigation using remote sensing ( rs ) technology can breakthrough the limits of traditional methods, make full use of its capability of integration, visualization, rapidity and vast - dimensions analysis, and get better results the paper takes the up - to - date landsat - 7 etm + data, which is the most widely used, and quickbird data, which has the highest resolution nowadays, and according the features of the data and landslides, processes the quickbird data with 1 : 10 000 dem orthophoto correction and the landsat - 7 etm + data as follows : ( 1 ) selecting optimal spectrum band : selects 753 bands as the optimal bands ; ( 2 ) image intensifying : selects the principle components processing method on the basis of comparing several image intensifying methods ; ( 3 ) rigour geometric direction : corrects the geometric distortion of the map ; ( 4 ) image fusion : mainly takes his space transform fusion and resolution fusion method, and acquires maps with higher spectrum resolution as well as space resolution. after that, the visual effect of the image has been enhanced, and the interpretation precision
採用遙感技術，可以突破傳統調查方法的限制，發揮其宏觀、綜合、直觀、快速的特點，取得更好的效果。論文選取目前應用最廣的陸地衛星最新系列landsat - 7etm +數據和空間解析度最高的商業衛星quickbird數據作為主要的數據源，根據數據的特點及滑坡災害應用特徵，對quickbird遙感數據則基於1 ： 10000dem進行了正射校正，對etm +遙感數據進行了波段優選，選取了753作為最佳組合波段；圖像增強，通過各種增強處理方法的效果對比，選擇主成分分析法對圖像進行增強；幾何精校正，糾正圖像的幾何變形；影像融合，主要選取了效果較好的his空間變換融合和解析度融合，得到的圖像既具有較高的光譜解析度，同時也具有較高的空間解析度。經過上述數字處理，較好地改善了圖像的視覺效果，提高了圖像解譯的精度。Visualization of terrain information is playing a key role in many applications such as flight simulation, 3d geographic information system, etc. however, with the rapid development of the remote sense and satellite technology, people expect to investigate or view larger terrain regions with finer precision, which inevitably leads to the real time visualization of huge terrain dataset
地形信息的可視化在實時模擬和地理信息可視化系統中佔有十分重要的地位。然而隨著遙感技術，衛星技術的發展，使得獲取高解析度的數字幾何高程數據以及影像紋理數據成為可能，人們希望觀察更廣范圍的地形，對地形的實時繪制提出了更高的要求。Geometry data is modeled as a regular grid, and texture comes from the remote sense or satellite images
地形幾何數據來源於數字高程模型（ dem ） ，紋理數據來源於衛星和遙感圖象。This dissertation established a novel distributed spaceborne sar simulation system based on the high level architecture ( hla ). this dissertation developed a mathematical model of instantaneous sphere earth model and instantaneous circle orbit model for the geometry system between the satellite platform and the targets on earth based on the satellite platform ’ s orbit features and sar system ’ s operational characteristics, unlike the traditional sphere earth model and circle orbit model
本文從建立精確的、易於模擬的星地幾何關系入手，舍棄了傳統的星載sar研究中的球型地球模型和圓形軌道模型，根據星載sar的軌道特點和sar的工作特點，對局部球型地球模型進行改進，建立了在瞬時球型地球模型和瞬時圓形軌道模型下的星載sar模擬。R [ 16 ] we deprive the mathematical model of altitude and shape control of satellite with articulated appendages although not essential, the model formulation using li group and li algebra theory leads to relatively simple and available control formulas
R ，利用整體微分幾何的相關理論推導了帶有關節相連的附屬物的人造衛星姿態?形狀控制系統的數學模型，該模型的優點是易於採用簡單有效的控制方法。分享友人