satellite spectrum 中文意思是什麼

satellite spectrum 解釋
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  • satellite : n 1 【天文學】衛星；人造衛星；〈比喻〉衛星國。2 隨從，幫閑者，食客。3 【生物學】隨體（指染色體）...
  • spectrum : n. （pl. -tra ）1. 【物理學】譜，光譜；波譜；能譜，質譜。2. 【無線電】射頻頻譜；無線電（信號）頻譜。3. 【心理學】（眼睛的）余像；殘像。4. 〈轉義〉范圍，幅度；（連續的）系列。
  1. We acquired the system ' s dynamic response when the satellite attitude was adjusted and the mode of the antenna. then modal analysis and dynamic analysis have been done to the satellite - antenna system by using the finite element analysis ( fea ) software of ansys. through the analysis we got the system ' s connatural characteristic, the amplitude - frequency characteristic of harmonic response, the power spectrum density of random vibration response, the maximal amplitude and resuming time of impact response

    其次藉助ansys有限元分析軟體，對系統進行了模態分析和動力學響應分析，獲得了不同天線結構參數下的衛星?天線系統的固有特性，簡諧響應的幅頻特性，隨機振動響應的功率譜密度，以及沖擊響應的最大幅值和恢復時間等。
  2. Electromagnetic compatibility and radio spectrum matters - electromagnetic compatibility standard for radio equipment and services - part 12 : specific conditions for very small aperture terminal, satellite interactive earth stations operated in the frequency ranges between 4 ghz and 30 ghz in the fixed satellite service v1. 2. 1

    電磁兼容性和無線電頻譜情況.無線電設備和服務的電磁兼容性標準.第12部分:固定衛星服務中工作在4 ghz到30 ghz頻帶的衛星地面站微小孔徑端的具體條件
  3. It will also be necessary to free up radio spectrum now used for military and satellite communications

    同樣地，也有必要開放目前用於軍事和衛星通訊的無線電頻段。
  4. 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。
  5. With the rising demand ever, the orbital resource and frequency spectrum resource for gso communication satellite has been almost fully exploited and utilized, by means of cross polarization, multi coverage, and orbital space reduction

    隨著通信需求的增長，人們採用極化復用、空間復用和縮小軌位間距等手段，對靜止衛星軌位和無線電頻譜資源作了接近極限的開發利用。
  6. Dttb ( digital television terrestrial broadcasting ) is one of the present digital television broadcasting modes, whose transmission media is earth. after a decade of intense research and development, the standards of digital television satellite broadcasting and digital television cable broadcasting have been confirmed. but the standard of digital television terrestrial broadcasting is still in disputation, for its transmission environment is rather awful, its spectrum resource is very limited and its service required is disperse, so it is potential to be improved in many aspects

    數字電視廣播發展近十年來，衛星和有線電纜廣播的基本傳輸體制已確定，而地面廣播由於傳輸環境惡劣，頻譜資源有限，應用需求分散，其標準在各國仍有極大的爭議，因為目前沒有一套標準能解決實際地面傳輸中的所有問題，因此數字電視地面廣播在許多方面都有很大的改進潛力。
  7. Qpsk modulation for digital television using advanced digital signal processing technology, full compliance with dvb - s standard, the receiving end can be directly used for receiving digital satellite receiver. it must not only be able to achieve a higher utilization of the spectrum, with a strong anti - jamming and high performance. fm microwave equipment and simulation and will be good compatibility

    Qpsk數字電視調制器採用了先進的數字信號處理技術，完全符合dvb - s標準，接收端可直接用數字衛星接收機進行接收。它不但能取得較高的頻譜利用率，具有很強的抗干擾性和較高的性能價格比，而且和模擬fm微波設備也能很好的兼容。
  8. The aim is to ensure efficient utilization of the radio frequency spectrum and the satellite orbital positions

    目的是確保有效運用無線電頻譜及衛星軌道位置。
  9. The theory, methodology and software for the retrieval of ocean wave spectrum from satellite synthetic aperture radar ( sar ) images using hasselmann ' s method are introduced in this thesis

    本文系統介紹了利用hasselmann方法從衛星sar海表圖像反演海浪方向譜的理論、方法、軟體以及在中國海的印證。
  10. Three satellite images, i. e. two from tm or etm and one from spot scenes, were used. land use change areas were determined using the two change detection techniques of post - classification comparison and spectrum comparison

    按土地利用數據變化的監測、更新、分析與管理的技術路線，對長樂市1998 2000年的土地利用變化應用研究。
  11. Electromagnetic compatibility and radio spectrum matters - satellite personal locators beacons operating in the 406, 0 mhz to 406, 1 mhz frequency band - part 1 : technical characteristics and methods of measurements v1. 1. 1

    電磁兼容性和無線電頻譜情況.工作在406 . 0 mhz - 406 . 1 mhz頻帶的衛星個人定位器信標.第1部分:技術特性和測量方法
  12. It will become the basic technology of those domains. in accordance to the characteristics of satellite communication system, it is necessary to limit the bandwidth of the signal spectrum and to decrease the isi

    針對衛星通信通道的特點，為了節約頻譜資源，需要對發射信號進行帶限；為使傳輸誤碼率足夠小，必須最大限度減小碼間干擾。
  13. The observatory maintains a website on the internet. apart from a variety of forecasts, the website provides a wide spectrum of information such as satellite pictures, weather maps, weather of other cities, tv weather programmes, tropical cyclone warnings for shipping, rainfall distribution maps, tropical cyclone tracks, newsletters for the friends of the observatory, information on el nino and the greenhouse effect, and near real - time weather information over various places in hong kong

    天文臺在網際網路上設有網站，市民可透過該網站閱覽各類天氣預報、衛星雲圖、天氣圖、各大城市的天氣資料、電視天氣節目、供船舶用的熱帶氣旋警告、雨量分布圖、熱帶氣旋路徑圖、天文臺之友會員通訊、厄爾尼諾及溫室效應資料和香港各區接近實時的天氣資料。
  14. Firstly, the system for receiving and disposing weather - satellite data provided by the national satellite meteorology center was used to distill spectrum data of channel - 1, channel - 2, channel - 4 and channel - 5 from noaa / avhrr ib data, and the spectrum data were transferred to local area file by the method of projection

    應用國家衛星中心提供的「極軌衛星資料接收與處理系統」 ，從noaa avhrr1b文件中提取廣西區域范圍內各通道的光譜資料，進行投影變換後生成等經緯度圖像文件。
  15. A tdrss user transponder is a terminal of the user satellite in this system, in which qpsk or sqpsk modulation and direct sequence spread spectrum ( ds - ss ) are employed in the forward / backward links

    Tdrss用戶應答機是該系統的用戶終端，其正反向鏈路的信號通常採用qpsk或sqpsk調制和直接序列頻譜擴展。
  16. Spatial spectrum estimation techniques for satellite interference localization

    空間譜估計方法在衛星干擾源定位中的應用
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