background clutter 中文意思是什麼

background clutter 解釋
背景雜斑［波
  • background : n 1 後景，背景；基本情況；（紡織品等的）底子；出身；經歷。2 隱蔽的[不引人注目的]地位；幕後。3 襯...
  • clutter : n. 1. 〈方言〉喧囂。2. 混亂，（房屋等）擁擠雜亂的一團。vt. 〈英方，美〉弄亂，攪亂；亂七八糟地堆滿 （up, with）。vi. 〈方言〉喧鬧，吵吵鬧鬧地跑 （along）。
  1. 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。
  2. According to the statistic characteristics of ir background clutter, an improved spatial matched filter ( smf ) is presented

    理論和實驗結果表明，該方法對于抑制強起伏的紅外背景是十分有效的。
  3. Combined with the key project of the preliminary research of national defence science and technology, the target recognition system for millimeter wave initiative homing guidance, a systematic study on the signal processing method based on the background of millimeter mave ( mmw ) missle - borne pulsed doppler radar is performed. it include specifically the detction and the recognition of the moving target and hovering helicopter under strong clutter background

    本文結合國防科技重點預研項目「毫米波主動尋的制導目標識別」 ，針對脈沖多普勒體制雷達導引頭的應用背景，對基於彈載高重頻脈沖多普勒體制雷達的信號處理方法進行了較深入的研究。主要研究內容包括對雜波背景中的機動目標以及對懸停直升機的檢測和識別方法。
  4. In chapter 3, under the wideband radar system, some parameter estimation methods of scattering center are studied in the white noise and clutter background

    第三章以寬帶階梯變頻雷達為研究背景，在白噪聲和雜波條件下，研究了提取目標強散射中心的參數估計方法。
  5. In the forth and back windows, the mosos - cfar detector uses the ordered statistics as the background cutter power level of the two windows, and the sum of the forth and back local estimation as the total estimation of background clutter power level

    Mosos - cfar檢測器在前後滑窗分別採用有序統計量來表示前後滑窗的背景雜波功率水平，再將前後局部估計相加作為總的背景雜波功率水平估計。
  6. The weak signal in laser clutter background can be detected by means of the prediction error

    利用預測誤差檢測到激光雜波中的有用弱信號。
  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 this paper, under the wideband radar background, the simulation method of radar clutter, the principle and estimation method of one - dimension and two - dimension physical structure features of radar target, some classification method using physical structure features of target, etc. are studied

    本文以寬帶雷達體制為研究背景，在復雜背景下，主要研究了雷達背景雜波的模擬、雷達目標一維、二維結構成像的機理和方法，還研究了基於目標結構成像的識別方法等問題。
  9. The property and computing method of hausdorff distance is discussed. the using of directed hausdorff distance to match graphics in clutter background is verified. an algorithm is used to compute the voronoi surface

    討論了hausdorff距離的性質以及計算方法，指出了在復雜的背景圖像中，利用有向hausdorff距離進行圖形符號匹配的適用性，並且提出了一個計算voronoi曲面的具體演算法。
  10. Under the background of target tracking in high - density clutter, the calculation formula of the pda algorithm ' s error variance is analyzed and revised firstly, and the modified pda ( mpda ) is derived, which not only improves the tracking performance, but also makes the error variance and the real error of the algorithm match well

    針對高密度雜波環境中的目標跟蹤問題，首先分析和修正了pda演算法中誤差方差的計算公式，提出了修正的pda演算法（ mpda ） ，它不僅提高了跟蹤性能，而且使得誤差方差與演算法的實際誤差能夠很好地匹配。
  11. Stationary characterization and correlation of visible image background clutter

    可見光圖像背景起伏的平穩性和相關性分析
  12. The dissertation have made a pioneer study on moving picture acquirement, straw object extraction and moving object tracing in the heavy clutter situation of imbalance lighting, camera and straw moving simultaneously with several similar moving objects on mass background, and obtained following achievements : 1. a capturing system for moving pictures is developed, which could capture and save pictures in real time. the special emphasis is on solving the lost frame problem during images transmitting caused by low transmitting speed of peripheral equipments

    針對拍攝時攝像機與秸稈同時發生運動、光照不均、秸稈圖像背景復雜、凌亂、運動物體多等特點，論文對運動圖像採集，秸稈目標提取，目標跟蹤問題進行了較深入的研究，並取得了如下成果： 1本文研究了運動圖像的採集問題，開發了運動圖像採集系統，著重解決了圖像傳輸中由於計算機外設速度跟不上圖像採集速度產生的丟幀問題，實現了運動圖像的實時採集和保存。
  13. ( 3 ) the mono - pulse range cell integration detection ( mprid ) method has been improved to adapt to the unrayleigh clutter background, and then the monte - carlo simulation method has been used to analyze the detection performances compared with the dtd

    （ 3 ）改進了噪聲背景下的單脈沖徑向積累恆虛警檢測方法，使之適應于非瑞利雜波背景，並採用蒙特卡羅模擬比較分析了該方法與雙門限檢測方法的性能。
  14. ( 2 ) based on cfar techniques of low resolution radar under the rayleigh clutter background, the double threshold detection ( dtd ) method which is suitable for hrr radar has been discussed, and then an approach of double threshold detection under unrayleigh background has been given. by means of the monte - carlo simulation method, the detection performances have been analyzed

    （ 2 ）分析了瑞利雜波背景下的低分辨雷達恆虛警檢測方法，討論了適用於高距離分辨雷達的雙門限檢測方法，研究了非瑞利雜波背景下的雙門限檢測方法，並採用蒙特卡羅模擬分析其檢測性能。
  15. In hf ( high frequency ) radar, the targets detected based on the spectrum processed by the two - dimension fft are peak - like, which makes the operator distinguish them from the clutter and background noise easiler in the 3d ( three - dimension ) display than the 2d

    特別對于距離分辨力低的高頻雷達系統，其探測的目標通常近似為點目標，在經二維傅立葉變換得到的頻譜數據上呈現峰狀結構。
  16. We apply local entropy algorithm to the clutter tracking and detect clutter edge by local entropy filter. we also develop a new method to estimate fractal dimension from clutter surface for region segmentation. regarding the different results of clutter tracking as the background information, we propose clutter feature ( cf ) - cfar detector and structuring element ( se ) - cfar detector

    然後針對這兩種不同的雜波跟蹤結果，提出分別採用雜被屬性恆虛警檢測器和結構元素恆虛警檢測器，以改善傳統雷達系統中僅採用單一恆虛警演算法造成的檢測性能低下。
  17. It exploits the consecutive temporal and spatial dependencies of the points on a track to distinguish them from background clutter

    它主要是運用了目標運動在時間利空間上的連續性來積累目標能量。
  18. The main function of radar is target detection in the background clutter. the effect of clutter to the automatically detecting system is one of most important problem which could not ignore in the radar design

    雷達的主要目的就是在存在干擾的背景中檢測出有用目標，雜波對雷達檢測性能的影響一直是雷達設計中不可迴避的重要問題之一。
  19. The experimental results identify that this process can robustly track and classify targets of interest, reject background clutter, and continually track objects over large distances despite occlusions, appearance change, and cessation of the target motion

    實驗結果表明，該過程能夠很好地探測和分類目標，去除背景信息的干擾，並能夠在運動目標部分被遮擋、外觀改變和運動停止等情況下連續地跟蹤目標。
  20. In this paper applications of wavelet packet analysis, higher order cumulant method and some image processing method in the processing of gpr data acquired from subsurface target backscattering are presented, which includes the following contents : methods to denoise and suppress background clutter for target detection ; to improve the time resolution for target position ; target recognition

    本文討論了小波包分析、高階累積量分析及圖象處理方法在沖擊脈沖探地雷達淺層反射信號處理中的若干應用，包括對目標去噪、確定目標時間位置及進行目標識別方法的研究。
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