clutter echo 中文意思是什麼
clutter echo
解釋
混雜迴音-
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。 -
The emphasis in this composition is windshear signal processing technology. some processing methods are introduced in detail, they are suppressing clutter, extracting windshear parameters, computing hazard factor and etc. the signal processing simulation is accomplished on computer, it includes simulating microburst echo signal, simulating ground clutter echo signal, filtering clutter, estimating wind speed and calculating hazard factor. from the simulated results, a dangerous windshear is detected 5o ~ 78s, so the radar performance meets the certification requirements proposed by faa and nasa
本文重點研討了風切變信號處理技術，對雜波抑制技術、風切變特徵參數提取技術及危險因子計算方法等內容進行了深入的研究，並進行了計算機模擬，包括微下擊暴流回波信號模擬、地雜波回波信號模擬、雜波抑制、風速提取和危險因子計算。 -
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。 -
The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided
論文的主要工作包括四部分：第一部分研究了脈沖多普勒雷達導引頭的信號建模問題，建立了雷達信號模型，主要包括：發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式，建立了信號和數據處理模型，主要包括：加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等，然後給出了信號處理流程。 -
In order to simulate the return, a radar coherent video echo model is used to simulate target echo, clutter and noise separately. then the three parts which are in the same range cell are added together to form a matrix to represent return in one radar coherent processing interval ( cpi ). this matrix is called a frame of range doppler data
為了較為全面地對雷達回波進行模擬，採用相干視頻回波模型分別模擬雷達目標回波、雜波和噪聲，通過在距離單元內疊加的方法，將一個雷達相干處理周期內的回波數據用一幀距離多普勒平面數據表示。 -
This paper is mainly about land clutter and sea clutter. it meanly introduced scatter character, radar echo signal range, and power spectrum model. in the end, a hardware realization of producing a specified power spectrum is given
本文主要研究了地、海雜波的散射特性、回波幅度特性和頻譜分佈模型，並且給出了一種硬體實現產生具有一定頻譜特性的雜波的方案。 -
That is, modeling radar system with software, and then recurring the produce, transmission processing by computer. the core of res is modeling the scatter and transmission of radar echo signal and varied radar clutter signals
雷達模擬的核心是建立雷達目標回波信號及各種雜波信號散射、傳播特性的模型。雜波伴隨這雷達產生而產生，對于雷達的設計有著重要的影響。 -
And the polarimetric processing of radar echo, using virtual polarization, is mainly studied in this dissertation, including target polarimetric enhancement and clutter polarimetric suppression
本文首先介紹了雷達極化的基礎理論，並著重研究了對雷達回波信號的極化處理，運用虛擬極化實現目標極化增強和雜波抑制。 -
The function of this algorithm includes two parts : first, bring the radar echo data into clutter reduction operation ; second, bring the data after clutter reduction into synthetic aperture operation in order to improve the image resolution
該信號處理演算法的主要功能是對探地雷達回波數據首先進行雜波抑制處理，之後利用合成孔徑孔徑技術提高成像的解析度。 -
To solve the laser weak echo detection under the clutter background, a dynamic programming ( dp ) technique has been developed for the detection of weak targets
摘要為解決低信噪比下激光微弱回波的檢測問題，提出了一種新的小目標檢測演算法。 -
Doppler radar is wide used, which utilizes the doppler shift between the target and radar to get the target information and process it. doppler radar has high performance on differentiating velocity, and it can efficiently solve the interference of the ground clutter to get the target echo from bad environment
多普勒雷達是一種廣泛採用的全相參體制的雷達，它利用目標與雷達之間相對運動而產生的多普勒效應進行目標信息提取和處理，具有較高的速度解析度，可以有效地抑制雜波，能在較強的雜波背景中分辨出動目標回波。 -
To solve the weak target detection under the clutter background, combined with dynamic chaotic model, the chaotic property of the laser echo signal is discussed and a novel algorithm is presented based on chaotic signal detection using neural network predictor
摘要為了解決雜波背景下的激光微弱目標檢測的問題，結合混沌動態建模思想，討論了激光回波的混沌特性，提出激光信號非線性混沌序列的神經網路建模、預測及信號檢測演算法。
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