背反射法 的英文怎麼說
中文拼音 [bēifǎnshèfǎ]
背反射法
英文
back reflection method-
And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed
研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。Firstly it discusses the value, meaning, background and method of this topic. then it deducts the single - bubble sound pressure, spectrum of sound pressure, power spectrum. according to the real situation of traveling bubble cavitation noise around a schiebe body, the mathematical model of single - bubble collapse is selected, furthermore, the mathematical model of mass traveling bubbles without interference effect is established, and the multi - peaks and rebound phenomenon while bubbles collapse is also analyzed with statistical method
首先論證了本項研究的意義，價值，背景和方法，然後推出了單空泡輻射噪聲聲壓，聲壓譜和功率譜，針對回轉體流動泡空化噪聲的具體情況，選擇了雙指數模型作為單空泡潰滅的數學模型，進一步建立了無干涉條件下的群泡輻射噪聲的數學模型，並用統計的方法分析了空泡潰滅時的多峰值和反彈現象。These emission peaks are located in the directions of the specular reflection of laser, the target normal and the back - reflection of laser respectively
這些超熱電子發射峰分別沿著激光反射方向、靶法線方向和激光背反射方向。The whole body echo area health massage, the whole body medium guidingreflexotherapy, the book of changes massage, 砭 the qing stonereflexotherapy, the back spinal column reflexotherapy, the footreflexotherapy and so on
全身反射區保健按摩、全身介質導引反射療法、易經按摩、砭磬石反射療法、脊背脊柱反射療法、足部反射療法等。At the same time, this paper pointed that the topological optimization method can be used in the lightweight design of the back contour of the primary mirror
同時本文還提出，可用拓撲優化的方法進行主反射鏡鏡背的輕量化設計。Using wavelet - based multi - scale transform to detect infrared target, it is possible to acquire modulus image to segment citrus from background under direct sunlight conditions, whereas it is difficulty to identification because of the confusion of the reflected light from leaves under backlighting. the method is very sensitive to the ambient air condition, such as in condition b or c, the identification is very difficult
用該方法可以較好地識別順光條件下採集的紅外熱圖像中的果實，而在背光條件下，由於位於樹冠邊緣的樹葉反射光較強或穿過樹冠的光使周圍的樹葉光反射較強，使果實在紅外熱圖像中的溫度或灰度低於反射光強的樹葉等部分，則不能識別。The peak in the direction of the target normal is consistent with mat of predicted by the resonance absorption and another peak of hot electrons emission in the specular reflection direction is due to the multi - acceleration mechanisms. the hot electrons emission along the back - reflection direction is probably caused by the acceleration of the back - reflection laser, which is for the first time put forward by us
其中，靶法線方向的超熱電子發射峰與共振吸收（ res ~ eabso甲tion ）機制所預言的一致;根據理論估算提出激光反射方向的超熱電子發射峰是幾種加速機制共同作用的結果;我們首次提出背反射激光加速超熱電子的新機制，並用此機制解釋了激光背反射方向產生的超熱電子發射峰。Abstract : the reflective characteristics of sea and sky background radiation, which have important effect on the infrared signature from flight vehicle above sea, are studied in the paper. the statistical distribution of wave facet directions is discussed, the effects of randomly riging and falling sea wave on the sea surface radiation and on the sun light reflection are also discussed. calculation methods of irradiance from sea surface radiation and reflected sun light on observation point are derived in the paper. finally a computation example is given, which shows the sea and sky background radiation has important effect on infrared characteristic especially in the front area of a flight vehicle
文摘:研究了對近海飛行體的紅外特性有重要影響的海空背景輻射的反射特性.討論了波浪面起伏隨機規律，隨機起伏對海面自身輻射及對陽光反射的影響，推演了此種隨機起伏波浪面的自身輻射及反射的陽光在觀測點形成的輻照度的計算方法.給出的算例結果表明，海空背景對飛行體的紅外特性尤其對其前半球的紅外特性有重要的意義Secondly, typical approaches of studying on vegetation have included radiative transfer, four - stream, geometric optics, hybrids of two or more of these, and numerical simulation. then we introduced several models for density or sparse vegetation, soil and desert
然後，簡單論述了建立植被散射模型的發展動態和幾種典型方法：輻射傳輸模型、四通量模型、幾何光學模型以及復合模型等，初步研究了用於稠密植被、稀疏植被、土壤、沙漠等環境背景的雙向反射函數模型。分享友人