軌道測量器 的英文怎麼說
中文拼音 [guǐdàocèliángqì]
軌道測量器
英文
track measuring device- 軌 : Ⅰ名詞1. (路軌;軌道) rail; track 2. (比喻辦法、規矩、秩序等) rut; path; course Ⅱ動詞[書面語] (遵循; 依循) follow
- 道 : Ⅰ名詞(道路) road; way; route; path 2 (水流通過的途徑) channel; course 3 (方向; 方法; 道理) ...
- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 量 : 量動1. (度量) measure 2. (估量) estimate; size up
- 器 : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
- 軌道 : 1 (供火車、電車等行駛的由條形鋼材鋪成的路線) track; pathway; rail; runway; circle; railway 2 (...
- 測量 : measure; survey; gauge; meter; measurement; measuring; surveying; mensuration; metering; gauging;...
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In the stage of the sun and the moon in sight, azimuth of the sun, the earth and the moon in the spacecraft body coordinate system is simulated. combining the simulated azimuth with the ephemeris of the sun and the moon, the state equation and observation equation are modeled. the initial orbital parameters calculated by least square method are used in orbit state equation to predict spacecraft state and to realize autonomous navigation
在日月可見階段,模擬日、地、月敏感器測量信息,即日、地、月在航天器本體坐標系下的方位信息,結合日月星歷,建立狀態方程及觀測方程,通過最小二乘法得到歷元時刻的軌道狀態初始值,將其代入軌道狀態方程進行自主導航。Application of universal variables to designing deep - space probe orbit
普適變量法在深空探測器軌道設計中的應用The vision sensor is fixed on the end - effector of the robot. when the robot makes a linear movement along the " v " measurement track, the linear light from the laser electropult on the sensor is projected on the track to shape laser strip with three turning dots and imaged in ccd camera. the relation between the sensor coordinate and the measurement track coordinate can be computed by image processing and pose measuring, which indirectly describes the characteristic of the robot ' s linear trajectory
該系統利用結構光幾何成像原理和視覺圖像處理技術,將視覺傳感器固定在機器人末端,當機器人沿「 v 」形測量軌道做直線運動時,傳感器上的激光發射裝置發出的線狀光源投射在測量軌道上,形成具有三個拐點的激光條,並在ccd攝像機中成像,通過圖像處理技術和位姿測量技術,得到傳感器坐標系相對于測量軌道坐標系的位姿關系,從而間接描述機器人的直線軌跡特性。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。However, if the optical head is off track, then the center spot gets more light ( because there are fewer pits off track ) and the side detectors will be misbalanced
但是,如果激光頭脫離軌道,中心光斑將得到更多的光(因為光斑照射到少量的坑形部分)並且附加探測器將失去平衡。When navigation accuracy is highly expected, the sensor with higher accuracy should be chosen and the observation time should be longer, especially in high - altitude orbit
當對導航精度要求較高時,軌道越高,尤其在高軌道類型中,應盡可能的選擇精度高的敏感器以及盡量長的觀測時間。At first, the author analyzed some chief factors such as light beam drift and atmospheric turbulence that affect the precision of the laser collimation in brief. then, the author studied the plan of the laser collimation generating nondiffracting beam and automatic level system with high precision. at last, the author completed the measurement of the straightness guideway by using ccd ( charge coupled device ) as the receiver and computer imaging processing
文章首先簡要地分析了激光自身漂移、大氣湍流等影響激光準直精度的主要因素,然後對系統的激光準直方案進行論證,並確定了無衍射光束的生成方案、高精度自動安平系統的結構方案,最後以ccd為接收器件,通過計算機圖像處理,完成對軌道直線性的測量。An on - line minimum - variance estimator was developed for thrust acceleration applied to orbit transfer using discrete - time radar measurements. the mass - flow - rate of propellant was selected as a state variant, which was estimated by employing an integral state model and ekf filter. the variation equations for measurement vector to mass - flow - rate have been established to linearize the discrete - time measurement equations. the algorithm has applied successfully to maneuver process in commanding satellite into geo - stationary orbit. the results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process
飛行器軌道機動過程中,為跟蹤、定位機動目標和干預機動控制過程,需要統計處理離散的雷達觀測量實時估計推進發動機的推力,進而確定飛行器的瞬時軌道參數.本文所述演算法是該工程問題的探討和解決方案.文章建立了軌道機動過程中連續變質量運動模型和離散雷達量測模型,推進發動機的質量秒耗量作為表徵推力加速度的一個近似常量,應用擴展卡爾曼濾波對離散的雷達測量數據進行順序統計處理給出秒耗量的最小方差估計;文章詳細地推導了線性化量測模型的變分方程和觀測矩陣;模擬結果表明該演算法能快速、準確地估計推進發動機的質量秒耗量和向機動目標施加的實際推力It has good compatibility and can be conveniently installed. suitable for truck scall, track scale, and other special scales for weighing or force meassuring
安裝方便、互換性好。可用於製造各種電子汽車衡、軌道衡、料門秤及各種專用衡器,適用於重量,力值測量的各個領域。Previous data had given the search for lunar ice a boost, including 1992 radar data indicating ice deep in craters at the poles of mercury, 1996 radio data from the moon taken by the clementine orbiter, and the lunar prospector orbiter ' s 1998 discovery of an elevated amount of hydrogen at the lunar poles
早先的數據推動了月球冰的搜索,包括1992年雷達數據顯示在墨丘利環形山深處的冰, 1996年克萊門汀軌道器採集的月球雷達數據,以及月球勘測者1998年發現的月球兩極氫數量的提升。The algorithm of strapdown inertial navigation system is also discussed and then use the flight - track generator to give a simulation, since a closed loop feedback integrated navigation system is designed in this paper, and the output of the filter must feed back to the strapdown inertial navigation system, the analysis of the algorithm in strapdown inertial navigation system is important. the scheme to design the trajectory of gps and the simulation of gps constellation are then studied, the simulation of gps constellation is given from the calculation of vernal equinox base on the principle of celestial mechanics, this method of different from other methods given by other paper and is useful to the research of satellite navigation system. a new method to abstract noise modal in integrated navigation system is proved to be useful in practice, this method, which is given by use the principles of stochastic processes, statistics, time series analysis, and system identification, is suitable for the kalman filter in integrated navigation system
如航跡產生器的設計,該航跡產生器是研究組合導航問題的前提,從國外一些研究組合導航系統的文獻中可以看出,設計這樣一個航跡產生器是非常必要的,所以本文自行設計了這樣一個系統;還討論了捷聯慣性導航系統中捷聯解算的方法,並進行了模擬研究,由於在本文設計的閉環反饋式組合導航系統中,對捷聯慣導系統的平臺誤差進行閉環控制,需要將濾波器輸出的校正量反饋到捷聯解算內部,所以必須對捷聯解算進行深入的研究和分析,更何況捷聯解算問題本身也是導航界的一個熱門研究課題;另外,本文還介紹了gps軌道及其星座模擬的設計思想和方案,與以往gps軌道和星座模擬不同的是本文從天體力學中計算春分點開始,逐步進行gps軌道及其星座模擬,這樣的設計方法對從事衛星導航的研究工作是有價值的;還對組合導航中誤差建模方法進行了研究,綜合運用隨機過程、概率統計、時序分析及系統辯識等方面的理論提出了一套適合組合導航卡爾曼濾波的誤差建模方法,並運用實際研究工作中的測量數據對該方法進行了驗證。Selecting the image elements of earth and moon centers as observed quantity, measurement noise model and observed equations of autonomous navigation system are built up. the spacecraft orbit is determined by using the recursive weighted least square based on ud factorization
在奔選取地心和月心像素作為觀測量,建立了符合實際情況的量測噪聲模型和自主導航系統的觀測方程,並利用基於ud分解的遞推加權最小二乘演算法估計了奔月探測器的軌道參數。Such tdrss system can significantly reduce the use of ground - based monitors as well as increasing medium - low orbit coverage, hence enhance the efficiency of the usage of space along medium - low orbit. “ space target capturing and tracking ” ( stct ) is an important technique in data relay satellite system, and is the preliminary requirement to establish the space link. “ performance of analyzing and simulating on tracking receiver in data relay satellite capturing and tracking system ” plays an important role of stct
數據中繼衛星系統是為中、低軌道的航天器與航天器之間、航天器與地面站之間提供數據中繼、連續跟蹤與軌道測控服務的系統,使用數據中繼衛星可以大量減少地面測控站的數量,增大對中、低軌道的覆蓋率,有效的利用中、低軌道資源。 「星間目標捕獲與跟蹤」是數據中繼衛星系統的一項關鍵技術,是建立星間鏈路的首要條件。Double pressure measuring instruments contain two separate measuring systems that are independent of one another which in one instrument display, for example, the brake pipe pressure and the reservoir pressure
應用於軌道機車和卡車的氣壓制動器設備上的壓力測量技術擁有雙值的壓力測量儀表,一個儀器中包含兩個獨立的測量系統。例如,制動管壓力和蓄水池壓力。Case 1 : when there is no relative measurement, each satellite uses its own on - board attitude sensors to determine its attitude, and exchange the information through the communication link between formation satellites, and then the relative attitude is determined through simple mathematical operation. case 2 : based on the range measurements of gps like sensors, using two - point measurement of the relative orbit state to establish relative orbit and attitude kinematics and measuring equations. and state estimation is achieved through the extended kalman filter technology and unscented kalman filter technology, respectively
方案一,在星間無相對測量時,由衛星自身攜帶的姿態敏感器實現單星高精度姿態確定,利用星間通信鏈路進行信息交互,通過簡單的數學計算獲得星間相對姿態;方案二,利用類gps相對測量,建立了編隊衛星相對軌道運動和相對姿態運動模型及相對距離測量方程,推導了兩點相對軌道運動模型,設計了擴展卡爾曼濾波器及uscented卡爾曼濾波器,對相對位置、速度和姿態進行估計。Tecsis pressure measuring technology for pneumatic brake equipment
Tecsis應用於軌道機車和卡車的氣壓制動器設備上的壓力測量技術Pressure measuring technology for pneumatic brake equipment in rail vehicles and lorries
應用於軌道機車和卡車的氣壓制動器設備上的壓力測量技術In this dissertation, missile ’ s states in the boost phase and trajectory parameters estimate algorithms are studied by using angles of arrival measurement from space - based infrared sensor, and the availability and precision is validated through simulation
本文主要利用地球同步軌道的預警衛星敏感器探測的目標視線角測量,對導彈主動段運動狀態和彈道參數估計演算法進行了研究,並通過模擬驗證了方法的有效性和可行性。Nasa plans to use the newly arrived mars reconnaissance orbiter, or mro, to take a picture of global surveyor to see how the failed craft is oriented relative to the sun for power and to earth for communications
美國宇航局計劃在抵達火星偵察軌道器,使用最新或維修、以圖畫全球測量不出失敗技工面向太陽相對地球通訊和電力分享友人