雷孔多 的英文怎麼說

Phase array radar can scan beams fast by controlling the phase of radiator elements in the antenna aperture surface, which shows many excellences such as agility, change celerity and multifunction. therefore, phase array radar is fit for the necessity of combat readiness

這種雷達通過電的方式控制天線孔徑面上各輻射單元的相位變化，以實現波束的快速掃描，使其具有靈活、變化快速、多功能等優點，適應戰備需要。

The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering

本文從星載雷達的星地幾何關系入手，舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型，研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法，並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體，完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析，最後完成雷達回波信號的模擬。

The players who took part in last night ' s birra moretti trophy at the san paolo in naples went through an intense aerobic session, while zanetti, cambiasso, burdisso, maicon, crespo, cordoba and recoba started with a warm - up, continued with tactical drills and concluded with a training game

昨晚在那不勒斯聖保羅球場參加了莫雷蒂啤酒杯的球員進行了一堂高強度的有氧訓練課，而薩內蒂、坎比亞索、布爾迪索、麥孔、克雷斯波、科爾多巴和雷科巴首先進行了熱身，隨后進行了戰術練習，最後進行了一場訓練比賽。

Because the synthetic - aperture radar can ’ t be influenced by the weather and it can accomplish high graphics reconnaissance for the landform, establishment and immovable or slowly - speeding target in the area of mapping. so it has the important martial value. this had been testified in the series of brushfire in these years

由於合成孔徑雷達（ synthetic - apertureradar ）可以不受氣象影響，對測繪區的地形、設施、固定和低速運動目標完成高分辨的成像偵察，因此具有重要的軍事應用價值，這在近年來的多次局部戰爭中得到了充分的驗證。

Airborne sar could gain high - quality image during aircraft flight. due to its theoretical advantages, sar imaging has been widely applied in both military and civilian areas

由於合成孔徑雷達成像具有很多原理性優點，因而在軍事和民用領域都取得了廣泛的應用。

Based on the doppler effect and pulse coherence technique, synthetic aperture radar ( sar ) breaks through the azimuth resolution limitation imposed by real aperture antenna. in combination with the pulse compression technique, two - dimensional high resolution imagery to distant targets can be realized

合成孔徑雷達（ sar ）利用以多普勒頻移理論和脈沖相參為基礎的合成孔徑技術，突破了實孔徑天線對方位向分辨力的限制，與脈沖壓縮技術相結合，實現了遠距離目標的二維高分辨成像。

Isar transmits wide bandwidth signals to obtain high range resolution. the cross - range resolution is obtained by the doppler frequency information of the target ’ s rotation

逆合成孔徑雷達通過發射大帶寬信號獲得好的距離解析度，利用目標相對于雷達的轉動產生多普勒頻率梯度來獲取好的方位向分辨力。

The paper overviews the history of moving targets detection and imaging based on sar, the methods based on doppler filtering, doppler rate filtering, parameter estimation and multichannel sar imaging are discussed in detail. the paper focuses on the two methods used in spaceborne sar which are displaced phase center antenna and along - track interferometric

論文回顧了合成孔徑雷達檢測與成像運動目標的發展歷史，詳細地論述了基於多普勒濾波、基於多普勒速率濾波、基於參數估計以及基於多通道sar的運動目標檢測與成像方法。

The multiscale mixed distribution models ( mmdm ) and the multiscale autoregressive ( mar ) models are investigated in this thesis, and they are applied to the unsupervised segmentation of the synthetic aperture radar ( sar ) image by joining them together - the multiscale mixed distribution models as the feature extractor and the multiscale autoregressive models as the classifier

本文對多尺度混合分佈模型（ multiscalemixturedistributionmodels簡記mmdm ） ，其中主要是對多尺度混合gauss分佈模型（ multiscalemixturegaussianmodels簡記mmgm ）和多尺度混合rayleigh分佈模型（ multiscalemixturerayleighmodels簡記mmrm ）進行了研究，及對多尺度自回歸（ multiscaleautoregressive簡記mar ）模型進行了研究，並將mmdm作為圖像分割的分類器， mar模型作為圖像分割的特徵提取器對合成孔徑雷達（ syntheticapertureradar簡記sar ）圖像無監督分割進行了研究。

Retired icac principal investigator louis cheung who had taken part in the fruit market investigations recalled : " the yau ma tei fruit market was an ideal venue for running a drug trafficking business. it covered a vast area lined with numerous fruit stalls and stands that offered a huge number of heroin " mining hiding points ". most people entering the market were familiar faces, so strangers were easily spotted

曾參與油麻地果欄案調查工作的前首席調查主任張華邦說：油麻地果欄具備地理優勢，佔地廣闊，攤檔數目多，易於埋雷即收藏白粉進出果欄的都是熟人，陌生面孔很易被認出而且內街縱橫交錯兼出入口多，倘若遇到執法人員追捕，也易於逃竄，是易守難攻之地。

Study of sar multibeam interchannel phase errors

合成孔徑雷達多波速通道間相位誤差研究

The radar which is embedded on platform sidelooking, but the platform will be disturbed by airflow inevitably. so, the radar will have a small sloping angle, thereby, the doppler centroid that is not zero and doppler frequency rate need to be estimated from the raw echo data in order to focus in azimuth commendably

場景成像的合成孔徑雷達一般是正側視放置，但是載機不可避免的要受到各種擾動影響，雷達會有一定的斜視角，從而導致了多普勒中心頻率不為零，多普勒調頻斜率也隨著雷達斜視角改變。

Mainly this paper discusses applying time - frequency analysis in several questions, including estimation of doppler parameter imaging of sar, detection of moving target and estimation of direction of arrival in array signal processing

本文討論了時頻分析在合成孔徑雷達成像中的多普勒參數估計的應用、時頻分析在動目標檢測中的應用以及它在信源來波方向估計中的應用。

The software has been used in many projects such as dual - frequency multi - polarization and multi - modes sar system, environment disaster inspection and forecasting sar satellite etc. this dissertation first considers the geometry relations between spaceborne radar and the earth targets

該軟體已經在雙頻多極化多模式合成孔徑雷達、環境災害監測預報合成孔徑雷達小衛星等多個項目中得到了應用。

This method offers more precise geometry for spaceborne sar system design and simulation. 3. in the analyzing on the radar doppler properties, under the ellipsoid earth model and ellipse orbit model, considering the earth rotation, the radar doppler properties with different orbit eccentricity are compared, and the fact that orbit eccentricity affects doppler frequency rate is found

在雷達多普勒特性分析中，論文採用橢球地球模型和橢圓軌道模型，結合地球的自轉，通過不同偏心率下雷達多普勒特性的比較，研究了軌道偏心率對合成孔徑雷達系統設計與模擬軟體研究雷達多普勒調頻斜率的影響。

Since the application of synthetic aperture radar ( sar ) images became more and more extensive, many fields of application are demanding not only qualitative but also quantitative information from sar images

隨著合成孔徑雷達遙感應用的日益廣泛和深入，許多應用領域不僅要求從sar圖像獲得定性的遙感信息，而且希望從sar圖像中提取定量的遙感信息。

An advanced study of the influences for sar image of receiver ' s gain - and - phase errors is presented in this paper

本文的研究內容以單多通道接收機系統幅相誤差對合成孔徑雷達成像的影響為主。

In this paper, the main problem is to detect the position and velocity of moving target by fractional fourier transform which could be concluded by three parts, the echo model establishment of moving target, the realization of fractional fourier transform and parameters estimation of moving target, detailed contents are as follows. firstly, the paper analyses the echo model of sar static target and introduces a kind of sar imaging algorithm, range - doppler ( r - d ) algorithm

本文的主要內容包括三個部分，即動目標回波模型建立、分數階傅立葉變換的實現和動目標參數估計，具體來說，其內容如下:首先，本文研究分析了合成孔徑雷達靜止點目標的回波模型並介紹了一種基本的合成孔徑雷達成像演算法? ?距離-多普勒（ r - d ）演算法。

In this paper, the definitions of soil macropore and macropore flow, their types, characteristics, generation mechanisms, and experimental methods in laboratory and field were introduced, and the research progress in their determination techniques, including dye tracing, slice up penetration curve, tension infiltration apparatus, x - ray ct scanning, and radar exploration were summarized

摘要介紹了大孔隙及大孔隙流的定義、多種表現形式及其重要特徵、產生機理和室內外實驗研究概況，以及染色示蹤、切片、穿透曲線、張力入滲儀、 x射線ct掃描攝像和雷達探測等方法的研究進展，揭示這些實驗方法的優點與存在的問題。

Author simulates original data of single point & multipoint based on the theoretical model of sar echo and processes these data by range - doppler imaging algorithm, likewise carries out deceptional jamming technology with point - target by simulation experiments. in addition, author succeeds in proposing a simpler and feasible method to resolve the location problem of deceptional jamming

根據合成孔徑雷達回波理論模型，模擬了單點和多點目標原始數據並對其成像，同樣通過模擬軟體實驗了點目標欺騙性干擾，並且就欺騙性干擾中的定位問題提出了一種較為簡單可行的解決方案