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occultation n.1.【天文學】掩星,星蝕。2.蔭蔽,掩蔽,隱伏,不見...

occulting light

In the fifth part we describe the procedure of amalgamating target and put emphasis on the research of target tracking method , by building up the moving status of target we can solve the problem of occultation . - - filter is adopted to predict next position of target so we can reduce the range of seeking matched target 在跟蹤過程中,著重針對多個運動目標遮掩的情況,設計了基于運動狀態的識別和跟蹤方法,并利用常系數的kalman濾波器對運動目標的位置進行預測,解決了目標遮擋情況下的識別和跟蹤問題。

This technique can measure the profiles of meteorological fields of the neutral atmosphere and the electron densities of the ionosphere with high precision and high vertical resolutions . it can operate all - weather with long - term stabilities and global coverage . the global - distributed occultation data will have a huge promotion on the numerical weather prediction , climate and space weather researches 該技術可測量自地面到約800km高空的中性大氣氣象場和電離層電子密度剖面,具有全天候、長期穩定、高精度和高垂直分辨率等特點;該技術提供全球分布的資料,將對數值天氣預報、氣候研究和空間環境研究起極大的推動作用,在氣象、空間、天文以及國防領域具有廣泛的應用前景。

With the three - dimensional ray - tracing program , the simulation of leo - gps occultation is given . the radio path of occultation observation is simulated , and then the excess phase delay is calculated . this work can be used for studying the effects of the neutral atmosphere and ionosphere on the occultation observations and evaluating the performance of the inversion techniques 本文介紹了無線電掩星技術的發展狀況和基本原理,圍繞無線電掩星技術及其應用研究展開諸多研究和探討,主要工作內容如下: 1 、利用全球三維射線追蹤程序,開展leo - gps掩星觀測的模擬研究,以計算掩星觀測時電波傳播路徑、計算大氣引起的附加相位時延等。

We can only detect the brightening of the occulted object by the “ focusing “ action of the gravitation lens . this effect is called microlensing . theoretically , einstein ring is formed whenever occultation happens 由于黑洞的強大引力,它會吞噬伴星上的物質,但這些物質并不會直墮進黑洞內,而是以螺旋狀軌跡卷進去,形成一個旋渦盤,所以科學家稱之為吸積盤。

Radio occultation technique for the earth ’ s atmospheric profiling , a new application of the global navigation satellite systems , is one of the most advanced space exploring techniques in the 21st century 地球大氣無線電掩星觀測技術是導航衛星應用新的生長點,是21世紀最先進的空間探測技術之一。

2 . the inversion techniques of occultation data are described and discussed in details . taken gps / met observations as examples , the atmospheric parameters profiles are retrieved accurately 5 、利用人工神經網絡方法同化電離層掩星觀測數據,建立經驗電離層模式,并應用之做短期的電離層預報。

This observation occurred during a solar occultation , where the sun passed directly behind saturn and left cassini in saturn ' s shadow with brilliantly backlit rings 此次觀測是當太陽正從土星后面經過而卡西尼號則處在土星的陰影中時進行的,在背光中光環顯得很明亮。

The precise timings of occultations provide information about planetary atmospheres , the dimensions of extended visible , radio , and x - ray objects , and the positions of objects 準確紀錄掩星現象的時刻能提供有關行星大氣,不同類型星體大小和準確的位置。

The probe was equipped with a radio occultation experiment to profile atmospheric density 探測器上配備有一個用于測定(繪)大氣密度輪廓的無線電掩星實驗裝置。

The probe was equipped with a radio occultation experiment to profile atmospheric density 我的理解是:探測器裝備有一個用于探測大氣層密度的掩星實驗裝置

Inversion of earth ' s neutral atmospheric parameters and bending angles with gps occultation data 掩星資料反演地球中性大氣參數折射角方法研究

What public advertisement would divulge the occultation of the departed 用什么樣的廣告把離去者失蹤一事公諸于世?

A lunar occultation of a quasar 類星體的月星掩測定

After a long period of occultation he again showed his face at the club 長期隱匿之后他又在俱樂部露面了。

From lunar occultation experiments at infrared wavelengths, it has been determined that the dust shell can be represented by two components . 通過紅外波段的月掩星觀測,已經確定該塵埃殼是由兩個成分原組成。