雷達波反射帶 的英文怎麼說
中文拼音 [léidábōfǎnshèdài]
雷達波反射帶
英文
radar reflector tape- 雷 : 1. (雲層放電時發出的響聲) thunder 2. (軍事上用的爆炸武器) mine 3. (姓氏) a surname
- 達 : Ⅰ動詞1 (暢通) extend 2 (達到) reach; attain; amount to 3 (通曉; 明白) understand thoroughly...
- 波 : Ⅰ名詞1 (波浪) wave 2 [物理學] (振動傳播的過程) wave 3 (意外變化) an unexpected turn of even...
- 反 : Ⅰ名詞1 (方向相背) reverse side 2 (造反) rebellion 3 (指反革命、反動派) counterrevolutionari...
- 射 : Ⅰ動詞1 (用推力或彈力送出) shoot; fire 2 (液體受到壓力迅速擠出) discharge in a jet 3 (放出) ...
- 雷達 : [訊] radar (縮自 radio detection and ranging)
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The conclusions from this research include : ( 1 ) the real part mainly effects the delay time between two peaks of gpr signal, the larger the real part, the longer the delay time. ( 2 ) the imaginary part mainly affects the peak amplitude of gpr waveform except that from pavement surface, the higher the imaginary part, the lower the peak amplitude. ( 3 ) the neglect of imaginary part of dielectric will increase the analyzing error obviously when it is higher
分析了路面結構層材料介電常數實部和虛部對雷達電磁波反射信號的影響,並得出以下結論: ( 1 )介電常數的實部主要影響雷達反射波的時延,實部越大,時延越長; ( 2 )虛部主要影響除路表反射波幅之外的其它結構層界面的反射波波幅,虛部越大,反射波幅越小; ( 3 )當介質介電常數虛部較大時,忽略虛部將給分析結果帶來明顯的誤差; 3The reflected wave will be received by the receive antenna and transferred to digital data. we can analyze the data that saved by the computer of gpr to deduce the medium ' s property, situation, location and so on. being a kind of nondestructive, untouched method, it has many advantages such as nondestructive, rapidness, simpleness and high precision, so it will have wide applications in the ways of examination, control and maintenance to road quality, especially for highway
路用探地雷達是近幾年發展起來的、應用於公路無損檢測的一項新技術,它利用超寬帶脈沖電磁波對路面結構層進行探測,當雷達發射天線發射的電磁波在路面結構層中傳播時會在介電特性突變處產生反射和透射,反射回來的波經由接收天線接收並轉化為數字信號儲存起來,通過分析探地雷達回波信號來估計路面結構層的性質、狀態和位置等特徵。Using a simple radiative transfer model for vegetation volume scattering and the integral equation model ( ibm ) for surface scattering with the field in situ measurements as the input, we compared the simulated and sar measured backscattering coefficients in different agricultural fields
特別是在植被覆蓋地表,對其下土壤水分的監測更帶有極大的困難性。因此,利用雷達後向散射系數反演土壤水分必須首先充分理解微波與地表的相互作用過程。
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