海浪雜波 的英文怎麼說
中文拼音 [hǎilàngzábō]
海浪雜波
英文
sea clutter-
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。Exhibiting short, jumbled waves, as a tidal rip
波浪起伏的顯示短而雜亂的波浪的，比如在海潮中The surveying of refraction shooting on the shallow sea is affected by the complicated hydrologic condition, for example, tides, ocean currents, waves which is mainly the disturbance can be conduce a great affection to surveying system
摘要海上水文環境的復雜性給開展淺層初至折射波法地震勘探帶來一定困難，主要體現在潮汐、海流、涌浪等對觀測系統產生較大影響，是海上工作的主要干擾因素。Firstly, while the nominal model is used, the filtering effect is very good. secondly, when the system model is n ' t definite, the filtered heading angle and rudder angle are steady in the error range. finally, when the complicated nonlinear wave model replaces the linear wave model, the filtering effect is also steady, and the estimate precision is high
首先，模擬是在名義模型的情況下進行的，此時h _濾波器的濾波效果很好；其次，我們在系統模型具有攝動的情況下進行模擬，此時經h _濾波器濾波后的航向輸出和舵令輸出基本能夠達到穩定；最後，我們採用較復雜的非線性海浪模型代替線性海浪模型進行模擬， h _濾波器的濾波效果也是比較穩定的，並且估計精度較高。At present, many fields remain to further research, especially the profound combination of gis technique with ece ( estuarine and coastal engineering ), which should be developed for the purposes as follows : ( 1 ) to serve the huge comprehensive work in changeable natural conditions and difficult construction conditions which takes a long period and covers a large region, e. g. the regulation work of deepwater channel in the yre ( yangtze river estuary ) ( 2 ) to combine the gis with applied numerical model ( 3 ) to study the hydrodynamic processes and characteristics of waves, tidal currents and sediment transport, as well as the affection carried by the regulation work in an estuary ( 4 ) to monitor and to analyze ees ( evolution of erosion and sedimentation ) and the variation of riverbed ( 5 ) to play a role of dynamic supervising of a engineering project
目前尚有許多有待進一步研究的領域，尤其是以服務于長江口深水航道治理這樣規模大、周期長、影響區域廣、自然條件復雜、施工情況多變的國家重點工程為目的，將gis與專業應用數學模型結合，對河口海岸波浪、潮流、泥沙運動的動力機制，以及整治工程建築物對其影響的研究，對入海航道沖淤和河勢演變的監測分析，對施工進展和工程效果實現「動態」監控和管理，尚缺乏同gis技術的深入有效結合。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。In this zone, the ocean wave fields are complex and variable due to the influences such as geological, bottomed, shoaling, ocean - engineering factors and currents in coastal zone etc. so the lattice ( multi - point ) situ - observation is not applied and is not practised based on the economical and practical consideration
特別在長江口區海域，地質、底質、灘塗、海洋建築、航運以及徑流等諸多因素造成波浪場的復雜多變，如依靠多布點的現場觀測在效益上不可取，實際操作也是不可行的。分享友人