航天探測器 的英文怎麼說
中文拼音 [hángtiāntàncèqì]
航天探測器
英文
space detector- 航 : Ⅰ名詞(船) boat; shipⅡ動詞(航行) navigate (by water or air); sail
- 探 : Ⅰ動詞1 (試圖發現) try to find out; explore; sound 2 (看望) call on; visit; see 3 (向前伸出)...
- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 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
- 航天 : space flight; spaceflight; aerospace航天導彈 space missile; 航天導航 aerospace navigation; 航天電...
- 探測器 : finder; detector; seeker; sounder; probe
- 探測 : survey; search; sound; probe; sounding; detection; acquisition; reconnaissance; localization; fin...
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Space environment threaten orbited spacecraft " s safe functioning and astronaut " s health, influence greatly communication depended on based - space way, airmanship orientation, military detection, aim identification, weather observation and source exploration and so on by all sorts of function ( magnetic storm, solar proton event and so on )
空間環境通過各種效應(如磁暴、太陽質子事件等)對在軌航天器的安全運行及航天員的健康構成了嚴重的威脅,對依賴于天基手段的通信、導航定位、軍事偵察、目標識別、氣象觀測、資源勘探等等均有重要影響。2. practical meteorology : making weather observations ; encoding and decoding of codes in normal use ; manual and computerized plotting of weather charts ; preparation and dissemination of weather bulletins by microcomputers ; principles and exposure requirements of meteorological instruments ; simple fault detection and adjustment of instruments and autographic recorders ; upper - air sounding ; wmo and aftn aeronautical fixed telecommunications network message formats and telecommunications procedures ; handling telephone enquiries
2 .實用氣象學:天氣觀測編制與翻譯常用電碼以人手及電腦繪畫天氣圖使用微型電腦編排及傳送天氣報告氣象儀器原理及安裝條件儀器及自動記錄器的簡單故障檢查與校正高空探測,世界氣象組織及航空專用電信網電報格式及電信程序接聽電話詢問。In perhaps the most unusual proposal of all, scientists from nasa ' s jet propulsion laboratory ( jpl ) in california are proposing to build a probe that uses heated water jets to descend to depths of up to a hundred meters through the frozen ice caps at the martian poles inn search of organic matter
在或許是最不一般的建議的倡導下,加利福尼亞州航空航天局噴氣推進實驗室( jpl )的科學家們正在計劃建造一臺探測器,使用熱水射流穿透火星極地的冰帽,深入到100米以下,搜尋有機物質。In 1965, the american space probe mariner 4 flew by mars, sending back photographs of the planet
1965年,美國的航天探測器「水手4號」從火星把火星的照片發射回地球。Using data obtained by the omega spectrometer on board european space agency ' s mars express, the team found the existence of ice clouds which sometimes become so dense that they throw quite dark shadows on the dusty surface of the planet
根據歐洲航天局「火星快車」探測器上裝備的omega光譜儀獲取的數據,該科學家小組發現,由於火星上空的乾冰雲有時很密集,所以會在覆蓋著很多塵埃的火星表面投下陰影。In order to investigate the unsteady flow frequency domain performances of an axial flow compressor at different mass flow, rotating speed and blade row spacing, plus inlet flow distortion, and considering aerodynamic characteristics and stability of the compressor, the low speed research compressor ( lsc ) at college of energy and power in nuaa is used to carry out the experiment studies. a large amount of test data has been gained through dynamic pressure transducers embedded in the stator blades at the tip, middle and hub section, then fast fourier transform algorithm ( fft ) is applied to calculate the frequency data
為探討軸流壓氣機在工作流量、工作轉速及動?靜葉排軸向間距變化時的葉片排流場非定常頻譜特性變化規律,並耦合進氣畸變的影響,同時與壓氣機氣動性能和氣動穩定性相關聯,作者利用南京航空航天大學能源與動力學院的低速大尺寸軸流壓氣機( lsc )試驗器,採取在靜子葉片表面埋入動態壓力傳感器的實驗方法,對葉尖、葉中和葉根三個截面的動態壓力進行了測量,獲得了大量的可靠的實驗數據。Information about venus obtained by russian probes has been published on some magazines
許多雜志發表了由俄國航天探測器獲得的有關金星的信息。Data from the cassini spacecraft have provided astronomers with a likely source of saturn ' s mysterious g ring, which was discovered by voyager probe
卡西尼號太空船提供給天文學家的資料是土星神秘的g狀環形物的可靠資源,這是由航行者的探測器發現的。The result shows that the solar radiation pressure moments play a mainly part. based on kalman filtering, three kinds of attitude determination algorithms were studied using the attitude sensor now available on the explorer : the first based on digital solar sensor ( dss ) and gyroscope when the star sensor is not available ; another based on dss, high - gain antenna ( hga ) and gyroscope when the explorer is in the earth - safe mode ; the third based on star sensor combined with gyroscope when the explorer is in the normal mode
針對配置了典型測量敏感器的深空探測器,基於擴展kalman濾波給出了其姿態確定的方法:針對星敏感器不可用情形,給出了使用太陽敏感器和速率陀螺定姿的濾波器演算法;針對安全模式下的對地穩定定向情形,給出了太陽敏感器和高增益天線融合速率陀螺信息的定姿演算法;針對正常巡航模式給出星敏感器和速率陀螺聯合定姿演算法。The workshop included a visit to the unveiling of a remote controlled prototype lunar rover by inventors at the shanghai aerospace system engineering institute in minhang district, shanghai
研討會期間,專家們參觀了位於上海閔行區的上海航天控制工程研究所並目睹了首次公開亮相的可遙控月面巡視探測器(簡稱With the development of the technology of the computer stereovision, the binocular stereo sensor has applied in field of industry detection, object identification, robot automatic guidance, navigation etc. with the appearance of new opto - electronic scanning technique, automatic technique, highspeed data processing technique and more effective algorithm, the binocular stereo ranging method has new headway and application the contents are arranged as following
隨著計算機視覺技術的不斷發展,立體視覺傳感器得到越來越廣泛的應用,尤其是雙目視覺傳感器的結構簡單、使用方便、速度快、精度高等諸多優點被廣泛應用地于工業檢測、物體識別、機器人自導引、航天、航空及軍事等很多領域。隨著新型光電掃描技術、新型陣列型光電探測器件及更有效的演算法出現,結合迅猛發展的自動控制與高速數據處理技術,立體視差測距方法有了新進展及應用。In august, a conference of astronomers stripped pluto of its status as a planet, but nasa is still sending a probe to pluto. it arrives in 2015
接著,回到未來。 nasa在2006年帶著三個重要的擴展國際空間站的航天飛機任務重返太空。行星探測器,仔細對火星進行了探測,發現了最近有水流的跡象。The relation of tthe ccd sensor imaging resolution and the mtf is gotten. when the mtf of space remote sensing camera is higher and the contrast of object is higher, it can be believed that the resolution of ccd sensor imaging is 1. 6 times of the pixel dimension, in the mean while the mtf decreases 32 %
通過模擬得到了ccd探測器的目標影像的分辨力與ccd像元尺寸的關系,當航天光學遙感相機的mtf較高(模擬中鏡頭的mtf = 1 )且目標為高對比度時,得到ccd探測器的目標影像分辨力是其像元尺寸a的1 . 6倍,其光學調制度傳遞函數mtf下降32的結果。With the development of our spaceflight and progress of deep space exploring, the conflict in the deep space detector between large numbers of data to be transmit and limited channel capability is more and more serious
隨著我國航天事業的進步和深空探測活動的開展,深空探測器中大量的數據傳輸需求與有限的通道容量之間的沖突亟待解決。Nasa ' s odyssey spacecraft has detected large amounts of hydrogen on the planet
美國國家航空航天局的「奧德賽」火星探測器在這個行星上發現了大量的氫。The photos taken by nasa ' s robot spirit have given people hope. the photo images just happened to capture what looks like a female being sitting on a rock
不過美國航空航天局「勇氣」號火星探測器拍攝的一組圖片讓人看到了一線希望,因為照片上出現了一個類似於女人的「身影」坐在巖石上。Three months later, nasa lost contract with its polar lander as it approached touchdown on the frozen south pole of the planet
3個月後,航空航天局與其在火星冰凍的南極接近著陸的「極地登陸者」號探測器失去了聯系。Finally, based on the observability analysis and error analysis, two autonomous navigation schemes for encounter phase are respectively proposed in detail. monte carlo simulations are done for the two schemes. by analyzing and comparing the simulation results, we can get the conclusion that, under the accuracy conditions provided by the instruments in existence, the position estimation accuracy for probe encountering object celestial body is 0. 42km and 0. 04km, which demonstrate the feasibility of the two navigation schemes
最後,在可觀性分析和誤差分析的基礎上,分別給出基於圖像測量的自主導航方法和基於視線方向及夾角測量的自主導航方法,並對這兩種方法進行蒙特卡羅數值模擬,通過對模擬結果的分析和比較,在現有儀器的測量精度下,探測器在與目標天體交會時刻的位置估計精度分別是0 . 42km和0 . 04km ,由此表明兩種自主導航方案都是可行的。Mars rover dust storms nasa ' s twin mars rovers spirit and opportunity survived another year on the red planet, but came perilously close to robotic death when massive dust storms brewed up during the summer months and blocked sunlight from reaching their power - generating solar panels
火星探測器經受塵暴折磨美宇航局孿生火星探測器「勇氣」號和「機遇」號在「紅色星球」上艱難地熬過了一年,在這個夏天塵暴肆虐火星,使陽光無法到達太陽能電池板上時,這兩個機器人幾乎「命喪黃泉」 ,結束它們三年多的火星之旅。Under the the image motion and the sampling discrete conditions, the other more important result is : under the condition of engineering practice, the orientation between the target strip and the pixel row is parallel or not, the difference amount of mtf is smaller then 1 %, therefore in the engineering, the mtf of the orientation parallel can instead of the mtf of the corresponding case
Ccd探測器的動態成像過程的另一個重要結論是:在工程實際條件下,目標條帶與ccd探測器的像元行方向平行與否的兩種情況ccd探測器影像的基於模擬實驗及計算機模擬的ccd航天相機影像分辨力的研究mtf相差小於1 % ,因此工程應用中可以考慮採用方向平行時的mtf作為相應情況下的mtf值。分享友人