星載的 的英文怎麼說
中文拼音 [xīngzǎide]
星載的
英文
satellite based-
This paper mainly aims at the characteristics of the hardware and software structure of the parallel computer on satellite, and has fulfilled researches of fault tolerant technique in three aspects of control theories and engineering : the first research of the system level fault - tolerant module is based on the system structure of the parallel computer on satellite, a kind of cold backup module and a kind of hot backup module for multiprocessor computer have been put forward. then the research of software fault tolerant technique which is based on the operate system named rtems has been carried, the mission level fault - tolerate arithmetic and the system level fault - tolerate mechanism and strategies based on the check point technique have been put forward, at the same time the self - repair technique of software which has used the technique of system re - inject has been studied. finally the technique of components level fault - tolerant based on fpga has been studied, a kind of two level fault - tolerant project which aims at the fault - tolerant module of the parallel computer on satellite has been put forward, and the augmentative of circuit that project design realization need is little, this project can avoid any breakdown of any part logic circuit of the fpga
本課題主要針對星載并行計算機體系結構及軟體結構的特點,從如下三個方面進行了容錯控制理論研究和實踐工作:首先進行了基於星載多cpu并行計算機體系結構的系統級容錯模型研究,提出了一種多cpu冷備份容錯模型和一種多cpu熱備份容錯模型;然後進行了基於rtems操作系統的軟體容錯技術研究,提出了任務級容錯調度演算法以及基於檢查點技術的系統級容錯恢復機制和策略,同時研究了利用系統重注入進行軟體在線自修復的容錯技術;最後研究了基於fpga的部件級容錯技術,提出了對容錯模塊這一星載并行計算機關鍵部件的兩級容錯方案,實現該方案所需增加的電路少,可避免板級晶元以及fpga晶元內部任何邏輯發生單點故障。The influence of drift angle on satellite photography of three line array camera
偏流角對星載三線陣相機攝影的影響The hydrometeor information from the cloud model is then used as input into a 3 - d microwave radiation transfer model that calculates the upwelling radiance received by the rediometer aboard the satellite
將雲模式模擬的水汽凝結體信息作為三維微波輻射傳輸模式的輸入值,計算星載微波輻射計接受到的上行輻射。Autonomous formation flyer technology developed by jpl is used three receiving antennas and one transmitting antenna are installed on each satellite each of satellites can transmit analog gps signal but more accuracy. the multiple receiving antennas on the every satellite are capable of acquiring precise pesudorange and carrier phase signals transmitted by other satellite and compose of a kind of onboard augment gps system
在文中,利用jpl提出的自主編隊飛行技術aff ,在每個編隊衛星上安裝一個發射天線和三個接收天線,每一個發射天線可以發射類似於gps的高精度偽距和載波信號,與其它衛星上的多個接收天線構成星載擴展gps系統。Through the analysis of fmea and reliability, the methods of prognosticating and assessing the design of products were developed
通過對星載嵌入式計算機系統進行fmea分析和可靠性評定,研究了預測和評定產品設計可靠性水平的方法。Input signal simulation of spaceborne microwave radiometer
星載微波輻射計輸入信號的模擬Location of ground targets by satellite - borne remote sensors
星載遙感器對地面目標的定位Based on the characteristics and performance parameters of hj - 1c small satellite and its sar remote sensor, the novel task, to propose the on - orbit test contents and methods for the sar images, is explored for the first time
本論文的成果在於,根據hj - 1c小衛星及其sar遙感器的特點及性能參數,初步論證了hj - 1c星載s波段sar在軌測試內容和方法。Reliability enhancement test of the space - borne rubidium atomic frequency standard
星載銣原子頻標的可靠性強化試驗The main content of this dissertation can be concluded as following : a ) on the base on discussion of sar high resolution and theoretical imaging model, sar signal processing is analyzed in detail. range immigration and estimation of doppler parameters are also involved during discussing space - borne sar imaging and processing. a good result is obtained in the course of processing seasat and x - sar raw data
在討論了sar二維高分辨力機理和sar成像理論模型的基礎上,針對sar成像信號處理,分析成像處理的基本原理,和星載sar成像處理中的距離遷移校正和多普勒參數估計等關鍵問題,編制了處理程序,對seasat , x - sar的原始數據進行了試驗,得到滿意的效果。High resolution spaceborne sar gives new challenge to radiometric calibration
高解析度星載sar技術的發展,對輻射定標提出了新的挑戰。In this paper, a method of simulating of spaceborne sar in time domain is provided
本文給出了一種星載sar分佈目標原始數據的時域模擬方法。Recent observations made with themis instrument onboard nasa ' s mars odyssey, currently orbiting mars, found the spots to be as cold as the carbon dioxide ( co2 ) ice beneath them
正在探索火星的火星奧德賽號探測船,最近用搭載的themis相機進行的觀測,發現這些暗斑和它下方的乾冰一樣冷。About eleven thousand years ago a star in the constellation of vela could be seen to explode, creating a strange point of light briefly visible to humans living near the beginning of recorded history
大約在1萬1千年前,在人類剛剛開始有歷史記載的時候,船帆座有一顆星發生爆炸,在天空中形成一個非常明顯奇怪的亮點。4. on the base of deep discussing about spaceborne sar operation, we present an approach to acquire the target location plane by satellite position and platform attitude, then to locate the target consistent with the earth surface curvature
論文在深入研究星載雷達實際工作狀況的基礎上,提出了一種由衛星位置和平臺姿態獲得衛星與目標所在的定位平面,再根據目標所在地面的彎曲狀況以及衛星到目標的距離確定目標位置的方法。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。The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering
本文從星載雷達的星地幾何關系入手,舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型,研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法,並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體,完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析,最後完成雷達回波信號的模擬。The dissertation also discusses a kind of improving algorithm of dpca : adaptive displaced phase center antenna ( adpca ), indicate the adpca can be used in distributed space - borne sar
5 .對dpca的改進技術( adpca )進行了探討。通過分析,說明了adpca技術在分散式星載sar系統中應用的可行性。2. based on the spaceborne sar theory, an elliptical earth model and an elliptical orbit model are proposed, which have some advantages over the traditional circular ones
2 .基於星載sar的基本理論,給出了一種進行星載sar回波信號模擬的橢圓地球模型和橢圓軌道模型,它們優于傳統的球地球模型和圓軌道模型。Our research process of solar ultraviolet spectrum monitor has three stages from observing on the ground to measuring in a basket carried by a bloon ; finally a satellite - borne instrument was launched on shenzhou spaceship
我國紫外光譜遙感儀器研製經歷了從地面樣機到氣球搭載,再到星載的過程,已研製成星載太陽紫外光譜監視器,並成功地搭載神州三號飛船進行了飛行試驗。分享友人