氣體雷射 的英文怎麼說
中文拼音 [qìtǐléishè]
氣體雷射
英文
gas laser-
To leibnitz it was " unconscious counting " a species of mathematics ; to john ruskin " frozen architecture " ; but to musicians it was, until only very recently, " singing. " sound was simply the physical medium, the carrier of the increasingly expanding structures which based themselves primarily on the model of the vocal phrase and its psychology, and projected its human aspirations in clearly shaped, arching melodic lines with or without verbal association
對leibnitz （雷布尼茲） ，它是"不自覺地數"一種數學;對johnruskin "凍結建築" ;但對音樂家，它本是， （直到最近才改變） ， "唱" .聲音只是單純的物體媒介;攜帶著，基於唱句及其心理模式擴增的結構，投射人的氣，以清楚的拱形旋律，可或有或無詞句Main conclusions drawn from the analyses of calculating results are as follows : ( 1 ) the microwave absorption of atmosphere gas have obvious attenuation at the wavelengths for cloud detection, thereinto, the water attenuation effect changes greatly, so the 94ghz cloud detecting radar should have water vapor attenuation correction scheme. ( 2 ) when 37ghz and 94ghz radars detect clouds, the difference between the atmosphere and cloud attenuation and the large variety of radar reflectivity conduce the intension of the radar backscatter signals change. ( 3 ) for the thin cloud layer and low water content of cloud, 37 - ghz radar backscatter signals are not as good as 94 - ghz radar, that is to say that the 94ghz radar has better capability in thin clouds detection
本工作得出如下結論： （ 1 ）大氣氣體的微波吸收在測雲波段產生明顯的衰減，其中水汽衰減效應變化很大；即將上天的空間94ghz測雲雷達必須有水汽衰減訂正方案； （ 2 ） 37ghz和94ghz雷達測雲，由於大氣和雲衰減不同和雷達反射率的很大差異，導致雷達回波信號強弱不同； （ 3 ）對雲層較薄、含水量較少的雲，在不計雷達參數的情況下， 37ghz雷達回波信號不如94ghz測雲雷達，也就是說94ghz對薄雲有更強的探測能力；對雲層較厚、含水量大的雲，由於強衰減的作用， 94ghz雷達回波信號小於37ghz雷達； （ 4 ）從大氣衰減的不利因素方面考慮，空間94ghz雷達測高層薄雲的效果最好；測低層薄雲時需要考慮氣體衰減訂正；因濃厚雲的強衰減作用，探測其中下部的能力大大減弱，不僅要進行衰減訂正，而且要藉助其他信息來反演整個雲層的含水量垂直分佈； （ 5 ）為了獲得從極薄到極濃厚雲的垂直分佈探測能力，未來測雲雷達系統最好採用雙波長甚至三波長（如94 、 37和13ghz ） 。A typical bistatic weather radar net work is comprised of one traditional transmitter - receiver radar and one or more passive non - transmitting radar receiver at remote site. this type of multiple radar network offers unique advantages when compared to traditional radar net work. this paper introduces the concepts and principles of bistatic weather radar network and analyses, simulates, calculates the basic concepts of effective scattering particle volume relative to the receiver of bistatic radar network, the doppler shifts of the received signals, gives the formula to conduct the three dimensions wind field
本文從原理上分析了雙基地天氣多普勒雷達的構建、基本幾何關系、有效散射體積及其與雙基地角的關系，有效散射體積和目標與雙基地天氣多普勒雷達主站發射機的距離的變化關系，指出雙基地天氣多普勒雷達有效體積和單基地雷達有效照射體積隨之距離的變化有相似之處，但是由於收發分置的幾何結構，雙基地天氣多普勒雷達的性質與雙基地大氣多普勒雷達的散射角有著密切的關系。The rf discharge excited waveguide co2 laser has been the suitable light source of lidar, because of its low volume, high efficiency and the particular wavelength
由於射頻激勵波導co _ 2激光器體積小、效率高、調諧范圍寬、波長正處于大氣透射窗口等獨特優勢，它已成為激光雷達等應用的理想光源。First in this paper, we review the development of radar signal processing and cfar detector, analyse the structure and principle of the signal processor, ca - cfar and os - cfar detectors. then, in view of the characteristic of prc cw signal, analyses the statistics characteristic of scattering bodies, models of target, noise, ground - clutter and weather - clutter are made. these lay a theoretic foundation of signal processing and cfar detector
然後，本文針對x波段偽隨機m序列相位編碼連續波信號體制，分析了各種散射體的統計特性，對雷達目標及檢測背景噪聲（熱噪聲、地雜波和氣象雜波）進行了理論分析和統計檢驗，建立了目標及檢測背景的目標模型，確立了信號處理和恆虛警檢測的理論基礎。Since the distance from any given radar to each of these reflective surfaces ( which may be as much as 50km, or 30 miles, away ) is known precisely, the time it takes a beam to get there and back is a measure of how much water vapour it contains
因為可以精確獲取某一雷達到這些反射物體中的任一表面的距離（可能有50公里，即30英里遠） ，人們便可以通過雷達波往返兩地所需的時間測得反射物的水蒸氣含量。The authors suggest that the argon laser photocoagulation is effective in maintaining or improving the vision and preventing the vitreous hemorrhage for the patient with retinal branch vein occlusion
作者認為氬氣雷射光凝固療法，對于視網膜靜脈分枝阻塞癥患者視力之保持或增進，以及預防玻璃體出血之發生，是相當有效的，在本報告中，無一例發生治療后的合併癥。Radar ( radio detection and ranging ) detect the objects in the space and estimate the objects " parameters, such as distance, azimuth, angle of elevation, velocity, by transmitting radio wave. in national economy, it is used in navigation, weather forecast, geological mapping, military affairs and so on
雷達利用發射的無線電波探測空間中的物體並確定其距離、方位角、仰角、速度等各項參數，廣泛應用於導航、氣象預報、地質測繪、軍事等領域。In this paper, an integrated calculate method including three - dimensional configuration design, aerodynamic analysis, and computation of radar cross section ( rcs ) is researched
本文對與導彈總體設計密切相關的三維幾何造型、氣動性能與雷達散射特性的一體化計算作了相關研究。分享友人