satellite position 中文意思是什麼
satellite position
解釋
衛星位置-
Satellite emergency position indication radio beacon station
衛星緊急指位無線電信標電臺 -
As it circles our planet, the changing position of the moon with respect to the sun causes our natural satellite to cycle through a series of phases : new, new crescent, first quarter, waxing gibbous, full, waning gibbous, last quarter, old crescent and back to new again
當月球進入地球的半影時，應該是半影食，但由於它的亮度減弱得很少，不易察覺，故不稱為月食，所以月食只有月全食和月偏食兩種。 -
Performance requirement for satellite emergency position indicating radio beacon
衛星應急無線電示位標性能要求 -
Gps receivers belong to the user equipment, mainly used to receive satellite signals and telegraphese, measure the distance from receiver to the satellites by the wireless signals, compute the position and speed of satellites by telegraphese, then compute the position and speed of user
Gps衛星接收機屬于衛星導航定位系統中的用戶設備，主要用於接收衛星信號和電文，由無線電信號測定用戶至衛星的距離，或多普勒頻移等觀測量;根據導航電文，計算觀測衛星的位置和速度，根據觀測量和衛星的位置、速度，解算出用戶的位置和速度。 -
The motion carriers such as the automobile, trains, war vessels, the plane and so on, are in flux by their position and azimuth, if want kepting satellitic message and taking over satellitic signal, must adopt the platform system of tenaclous tracking satellite antenna
汽車、火車、艦船、飛機等運動載體的位置和姿態不斷的在變化，要保持與衛星的通訊聯系和接收衛星視頻等信號，就必須採用衛星天線穩定跟蹤平臺系統。 -
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。 -
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。 -
However, the longer length of c / a code, the more hardware resource and power it cost. this dissertation commits research on algorithm of c / a code acquisition in satellite navigation position system, and compares the acquisition means of digital differential matched filter ( ddmf ) with traditional means, and also achieves ddmf with the vhdl language and fpga platform
擴頻碼的周期的加長會給衛星導航定位系統帶來許多相應的好處，但問題也就隨著之而來了，擴頻碼的周期越長，同步捕獲所需得的時間就越長，而且若用傳統的并行捕獲方法，將極大的耗費硬體資源，而且系統功耗會隨之增大。 -
At last the algorithm of ddmf is achieved by the investigation tool of altera company ? quartus ii and the vhdl language, and its ip core is also achieved which is used not only in the satellite navigation position system, but also in the long pn code dsss system. ddmf investigated in the dissertation gives a good way to design the rapid pn code acquisition in the beidou project, and the technology has the definite theory and practice significance
此外還應用altera公司的最新的fpga開發工具quartusiiv5 . 1 ，採用了國際標準的硬體描述語言? vhdl語言，對數字差動匹配濾波器和傳統匹配濾波器演算法予以實現，開發了該演算法的軟ip核，可以對所應用的擴頻碼長度， a / d采樣后的數據量化階數，所用擴頻碼等可進行隨意改寫。 -
This paper, on the basis of beidou satellite ’ s communication and position principle, studies and develops the system of field mobile location environment monitoring based on beidou satellite, analyses the principles of communication and position of beidou satellite
本文在論述了北斗衛星定位、通信的基礎上，設計開發了基於北斗衛星的野外移動定位環境監測系統，結合環境監測系統的特點，做出系統的整體設計方案。 -
Satellite emergency position - indicating radiobeacon
衛星應急指位無線電示標 -
Today, while satellite ' s position precision improves and microcomputer develops with very fast speed, more and more type b stations and minitype f3 stations employ step - advance tracking
在衛星的位置精度提高和微型計算機飛速發展的今天，越來越多的b型站和小型f3站採用步進跟蹤。 -
Deduce the mathematical model of satellite attitude control system and position / attitude control system respectively, then design tracking controller. the credibility and availability of the proposed control strategy is shown by theory and simulation
分別推導了人造衛星姿態控制系統的數學模型和人造衛星位姿控制系統的數學模型，並進行指數穩定跟蹤控制設計，理論和模擬實驗證明了所提供的設計方法是行之有效的。 -
These results provide theory and tool for the design and realization of further study the satellite orbit control system ; ( 2 ) discuss the satellite attitude and position / attitude tracking control problems
這些研究成果對于進一步研究人造衛星軌道控制系統的設計和實現提供了理論和工具。 （ 2 ）討論了人造衛星姿態跟蹤控制和位姿（即位置和姿態）跟蹤控制問題。 -
According to the character of ballistic missile in boost phase, the gravity turn model is established, and according to the position relationship between early warning satellite and the target, the measure model is established
根據彈道導彈主動段運動的特點，建立了主動段運動重力轉彎模型。根據預警衛星與目標的位置關系，建立了觀測模型。 -
Because formation satellite ' s relative position is very close and the geometry can change easily, based on the relative motion of satellites, the initial phase bias could be quickly resolved simulation solution indicates that phase bias can be determined quickly and the relative states accuracy should be improved by using initial phase bias
由於編隊衛星相對距離近，相對構型容易改變，因此採用衛星相對機動的方式進行整周模糊度的快速初始化。模擬結果表明，基於衛星機動，整周模糊度可很快初始化。利用初始化的整周模糊度，相對狀態的解算精度會大大提高。 -
By extracting the necessary information in the gps signal and merging with the satellite orbital data, the position of the radiosonde and hence the wind vector is calculated
地面站接收到gps信號后會抽出所需資料，再加入有關衛星軌道的數據，便可計算出無線電探空儀的位置，從而計算出高空風向和風速。 -
The extensive emergence of international advertisement company at present, and their international advertisement business using communication satellite and compllter network to monitor the intemational market are bringing new messages to the development of advertisement indusny the advertisemellt photography has an impodri position in advertisements, and because it possesses outsboding visual anraction and the quick propagation of image, it can meet the requirement of advertisements
廣告攝影在廣告圖片中佔有重要地位，其原因不僅是因為它具有卓越的表現情感和引人注目的能力。就廣告本身的實際需要而言，快速成像和記錄數據的快速傳播，非常適應廣告製作的迫切性和嚴謹性的要求。此外，圖片還具有可加工性。 -
The third chapter involves some problems on attitude determination and integrity ambiguity resolving. using three formation flying satellites for an earth observation as an example, the forth chapter contains some problems about determination of inter - satellite position, attitude and time, by using high precise pseudo - ranging observation onboard pseudolites. the problems are the selecting of coordinate system and independent state parameters, the setting of observation equations, and the conversion of constellation ' s states
第四章以三星編隊星座為例，討論利用擴展的高精度星間偽距觀測進行星間相對位置、姿態和時間參數確定的一些問題，包括：坐標系、獨立參數的選取、觀測方程的建立和星座狀態的轉換等。 -
The thesis analyzes and constructs the terminal system by separating the monitor task into several modules. the terminal system consists of controller, light check module, position module, radio communication module and power management module, which combine radio communication, satellite position, computer control, switch power and some other technologies
本課題把監控要求與任務分成模塊進行分析與構建，系統分為控制器、燈檢測、定位裝置、通信模塊、電源轉換與管理等五大模塊，融合了無線通信、衛星定位、計算機控制技術、開關電源等技術。
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