海浪回波 的英文怎麼說
中文拼音 [hǎilànghuíbō]
海浪回波
英文
sea echo-
Second, the imaging model built here has taken into account the tilt modulation, the hydrodynamic modulation, and current modulations of radar cross section. consequently, it has realized the imaging simulation of four kinds of wakes with the same imaging model. third, the orbital velocity of ocean wave was considered as the basic dynamic factor, and the imaging model calculates the influence on raw data by the wave m ovement according to the orbital velocity
該模型的主要特點是: ( 1 )它採用了三尺度復合表面模型的思想來計算海面的電磁散射,考慮了中等尺度波對紋波的進一步調製作用,彌補了傳統雙尺度模型的不足; ( 1 )它考慮了海浪的傾斜調製作用、流體動力調製作用和流場對雷達截面的調製作用,實現了用統一的模擬模型對四種艦船尾跡特徵進行成像模擬; ( 3 )它把海面長波的軌道速度作為基本的動態成分,並依此來考慮海面運動對sar回波信號的影響。Sea clutter is a kind of spurious echoes that is caused by reflection from rough seas
海雜波是一類假的回波,是由海面的大浪反射雷達微波而引致。This kind of spurious echoes is called sea clutter and is caused by reflection from rough seas, a result of the storm s gale force winds
這類假的回波被稱為海雜波,是由風暴的烈風颳起的大浪反射所引致。Because of the presence of the first - order sea echoes with dominant amplitude, the doppler resolution technique which based on the range - velocity transformation is needed to extract the targets information in hf radar
高頻雷達工作在擁擠的短波波段,由於絕對占優的一階海浪回波的存在,必須採用基於距離?速度譜變換的多普勒頻率分辨技術來處理雜波,以提取目標信息。Super - resolution spatial spectrum estimation is applied in this dissertation to realize bearing resolution by utilizing the different bearings between targets and first - order sea echoes. the simulation of radar echoes in one resolution cell is presented based on the theoretically analyzing hf sea clutter sea clutter reflection characteristic and sea echo spectrum stretching mechanics
本文從分析高頻海雜波反射特性以及平臺運動引起海浪展寬機理入手,建立便於理論研究的一階展寬的海雜波和二階海雜波模型;在分辨單元上對雷達回波信號進行了模擬。Each wave threw him down and the current kept pulling him back into the sea.
每一個波浪都把他推倒,而且海流不斷把他沖回海中去。Considering the effects of both tides and waves, a2 - d numerical model was used to simulate the sediment movement in lianyungang harbor, and a large scaled average sediment concentration field of hai - zhou bay was computed
摘要以連雲港進港航道為例,應用波浪、潮流共同作用下的二維泥沙數學模型,研究淤泥質海岸的泥沙運動及航道回淤問題。On the basis of sediment concentration field, the annual back silting intensity on the approach channel of 70000 dwt at lianyungang harbor was also simulated, and the calculated results was coincident with actual data
鑒于進港航道回淤量是當地海域潮流、波浪、泥沙長期共同作用的結果,建議採用年平均含沙量場進行回淤計算,並在此基礎上模擬了連雲港7萬噸級進港航道的年回淤強度,計算結果與實測資料吻合較好。The advances in the research on coastal disasters, coastal ecological environments, waves and currents, coastal sediments and morphological changes, and coastal structures in japan are introduced by summarizing the papers which were presented in the annual conference on coastal engineering in japan
摘要介紹了日本第52回海岸工學講演會的概況,從海岸災害、海岸生態環境、波浪與水流、海岸泥沙運動與地形變化、海岸建築物等5個方面綜述了日本海岸工程研究的進展情況。In this dissertation, the progress in the researches of spatial coherence of random waves is reviewed. based on this, studies have been carried out for the statistical characteristics of crest lengths and their influence on vlfs
本文回顧總結了近年來國內外有關海浪空間特徵量統計研究的進展,並在此基礎上,開展了隨機海浪波峰長度統計特徵及其對海上結構物影響的研究。It was not easy designing a radar system able to pick out a submarine peniscope from aimd the endless rolling wave father.
要設計一種能從不斷翻滾的海浪回波中辨別出潛艇望鏡的雷達系統,並非易事。Based on the data on scour around large diameter cylinders exposed to waves and currents, effects of every kind of sea enviromental parameters on maximum scour depth are analyzed and guided by dimensional analysis and multidimensional linear regression, an equation is given to compute maximum scour depth around large diameter cylinders in combined waves and currents. compared with some other equations, this equation is more accrete, simpler and clearer and the compute d results are in good agreement with experimental ones
本論文主要是在總結國內外研究成果基礎上,從波浪與水流共同作用下海床上直立大直徑圓柱建築物周圍的局部沖刷機理出發,研究和探討了圓柱周圍的沖淤形態;分析各種海洋環境參數對最大沖刷深度的影響,並利用已取得的實驗資料,採用量綱分析原理和多元線性回歸分析方法,建立一個波流共同作用下海床上直立大直徑圓柱建築物周圍的最大沖刷深度計算公式。An ocean wave passing through deep water causes a particle on the surface to move in a roughly circular orbit, drawing the particle first towards the advancing wave, then up into the wave, then forward with it and then ? as the wave leaves the particles behind ? back to its starting point again
穿過深水的海浪使水面上的一個微粒按照一種近乎圓形的軌道移動,先把微粒拉向前移動的海浪,然後推上波浪,隨著波浪移動,然後? ?當波浪把微粒留在身後時? ?又回到出發點。The main problem is that near shore, a tsunami ' s actual size is masked by additional waves generated as the tsunami bounces off seawalls, wraps around islands, or sloshes back and forth in a bay ? all of which make for a very tangled signal
然而主要問題是當海嘯接近岸邊時,沖擊防波堤產生的巨浪,或是當它包圍島嶼、在海灣里來回所飛濺的浪花,都會造成非常紊亂的訊號,掩蓋海嘯的實際大小。This paper contains a useful smmary of log normal distribution, weibull distribution and the k - distribution. the weibull distribution may well extend to phenomena other than radar including radiation scattered from turbulent or rough surface
對雷達波來說,海面是極其復雜的反射體,關鍵是找出一些合適的參數,以便建立一個描述海浪一回波依從關系的數學模型。Combine with the project " hf ground wave radar supervise sea status " of state 863 project, retrieving wind direction from hf radar doppler spectrum and the showing of wind field, current field, wave field are researched in this paper. the problem of how to represent the sea surface parameters by computer is concerned, too
本文結合863 - 818 - 01 - 02課題「高頻地波雷達海洋環境監測技術」 ,研究了由高頻雷達海面回波提取風向信息和海面風場、浪場、流場信息的計算機表徵方法及其數據傳輸反演和表徵的若干問題。分享友人