radar detection characteristics 中文意思是什麼

radar detection characteristics 解釋
雷達探測特性
  • radar : n 〈美國〉【無線電】 〈radio detecting and ranging 之略〉 雷達，無線電探測器 （＝〈英國〉 radiolo...
  • detection : n. 1. 探知；發現，發覺；敗露。2. 【化學】檢定，檢查；【電訊】檢波。
  • characteristics : 產品性能描述
  1. Based on mono - pulse radar system and the analysis of terrain echoes, a geometrical model of air to ground ranging is constituted. by using the signals received from the sum and difference channels of terrain follow radar, a group of the expressions for terrain echoes are educed and characteristics of these echoes are obtained. according to the characteristics of the echoes, the theory and method of pass zero detection of difference channel and its applications are discussed in detail

    針對一維單脈沖雷達體制，分析了地形目標回波特性；建立了地形跟隨雷達空地測距的幾何關系；利用雷達收發信號，導出了地形跟隨雷達和差接收通道的回波信號表達式，進行了波形模擬，得到了地形跟隨雷達的地面散射產生回波在時域中的特性；根據和差回波特性，闡述了差信號過零點檢測測距的原理和方法及工程實踐中的應用，並給出了真實雷達對外輻射試驗的結果，驗證了文中的模擬。
  2. A i med at the badu ( k343 ) i arge seale i andslide in the nankun railway, geophysical exploration techniques such as seismic reflection of high resolution and geological radar are appi ied to detect the geologic characteristics of the landslide mass including 3d - conformation, perimeter, geometric parameters, si ippage pattern and distribution of displacement field in this dissertation. besides, acoustic method is used for detection of the former anti - slide piles and potency losing causations of the piles are analyzed and the sound geological conditions for upgrade of the piles are ascertained by the above investigations

    本文針對南昆鐵路八渡（ k343 ）大型滑坡，運用高解析度反射地震、地質雷達等地球物理探測技術對滑坡體地質進行了詳細的勘測，揭示了八渡滑坡體的空間形態、邊界與幾何參數、滑動方式以及位移場分佈特徵；同時，利用聲波探測對原抗滑樁進行了檢測，分析了失效原因，並查清了擬建抗滑樁地段的地質條件。
  3. ( 3 ) the basic theories and techniques on distributed radar cfar detection are reviewed. in particular, using the numerical performance simulation results, the performance of distributed cfar detect system under nonhomogeneous backgrounds and simple detect conditions are analyzed in some details. we have summarized the performance characteristics of distributed cfar detect systems against interference and edge clutter when different fusion rule is used

    西北工業大學博士學位論文（ 3 ）對分散式cfar檢測技術的相關理論、方法進行簡要總結與分析，特別是利用數值分析與性能模擬方法，對非均勻環境下簡單條件檢測系統的性能進行了較為深入和系統的研究，總結了不同融合方式時分散式cfar檢測在抗干擾與雜波方面的性能特點。
  4. In this dissertation, radar detection in hrr has been taken as background. the followings are main contents of this dissertation : ( 1 ) based on analyzing the targets and the clutter ’ s specific characteristics of hrr radar, the echo models of targets and clutter have been studied respectively ; the changes of targets ’ echoes in different elevation angles, azimuth angles and attitude angles have been analyzed ; then, the echo models of lfm radar clutter have been established

    本文針對高距離分辨雷達目標檢測開展研究，主要完成了以下幾方面的工作: （ 1 ）分析了高距離分辨雷達目標和雜波回波特徵，在此基礎上分別研究了高距離分辨雷達目標和雜波的回波模型，分析了不同俯仰角、不同方位角以及不同姿態下目標回波模型的變化，並建立了線性調頻脈沖壓縮雷達的雜波模型。
  5. The second part brings forward a new ar - model - based arm detection method based on features of arm and characteristics of velocity and acceleration of the radar echoes. by establishing two - order ar models, this new detection method computes the poles of models representing different targets, thus estimates the acceleration of the targets so as to determine the nature of the targets. furthermore, this method can not only be applied when the arm is being tracked by radar, but also be put into use in radar ’ s seeking and scanning times

    第二部分則是根據反輻射導彈（ arm ）的特點及其雷達回波信號中速度、加速度等特徵，提出了一種新的基於ar模型的arm檢測演算法，該方法通過建立二階ar模型、估計代表不同目標的模型極點，並由此估算目標加速度來判斷目標性質，該方法不僅可以在雷達已跟蹤上arm后採用，而且適用於雷達搜索掃描時使用，模擬結果表明該方法具有解析度高，對雷達脈沖重復頻率（ pulserepetitionfrequency ， prf ）及積累脈沖數要求不高的特點，在低的prf及少的積累脈沖下，利用該方法仍可有效地識別檢測arm 。
  6. It can construct a reference path with lowest danger for the uav ( unmanned aerial vehicle ) by accounting for some aircraft performance characteristics, the mission goals, the threat information and the terrain information. this paper puts emphasis on the study of path planning algorithms and the analysis of uav missions. the main contributions are summarized as follows : ( 1 ) the threat environment, mainly as the radar threat, is studied and the detection probability of the aircraft is analyzed

    本論文主要根據無人機的作戰任務方式進行了航路規劃研究，包括攻擊航路和偵察監視任務航路，具體內容包括以下幾個方面： （ 1 ）本論文分析了威脅空間的威脅計算問題，對飛行器探測概率進行定量化的研究，根據恆虛警處理技術對雷達探測概率計算方法進行了總結，說明了計算單部雷達探測概率問題的方法，在此基礎上對雷達網的探測概率計算進行了討論，提出了相對于距離的探測概率求解方法和思路，用於攻擊航路規劃中的威脅計算。
  7. ( 4 ) after factual characteristics of targets and clutter have been studied, an approach of radar signal detection based on factual has been given and analyzed deeply, the influence caused by different window length, signal to clutter ratio ( scr ) and clutter background has been analyzed, then the monte - carlo simulation method has been used to analyze the detection performances

    （ 4 ）研究了目標和雜波的分形特性，深入研究了基於分形的雷達信號檢測方法，分析了不同滑窗長度、不同信雜比和雜波背景變化情況對回波分形維數的影響，採用蒙特卡羅模擬分析該檢測器的性能。
  8. In particular, the cfar detection under nonhomogeneous backgrounds are summarized and analyzed in some details. using the numerical performance simulation results, the performance of mean level ( ml ), order statistic ( os ) and trimmed mean ( tm ) type cfar detectors are analyzed and compared in varies conditions. for the proportion of practical application and further development of radar cfar techniques, we have summarized the performance characteristics of these detectors

    主要工作概括起來有以下幾個方面： （ 1 ）對現有雷達cfar檢測技術，特別是非均勻環境下的cfar檢測技術進行全面的總結與分析，利用數值分析與性能模擬方法，從不同的角度對各種均值（ ml ）類、統計排序（ os ）類和削減平均（ tm ）類cfar檢測器進行理論分析和性能比較，並總結各種檢測器的規律與特點，為今後的實際應用和研究新的cfar檢測技術提供準備。
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