static echo 中文意思是什麼
static echo
解釋
固定目標回波-
Chapter 2 deals with the ground echo signal of sar, and establishes the signal models of static target and moving target
第二章研究了合成孔徑雷達回波信號，建立了靜止目標和運動目標的回波模型。 -
The specific research methods are listed : 1. matched filter taking the max ouput snr as the best rule correlates nonstop divided signal and divided echo to detect low snr target signal. then all one dimension divided correlation outs and done fft in portrait to leach interferential signal such as static or low rate mussy meaves, many pathway echo and so on and to take target ' s time difference and doppler frequency that combine parameters that target ' s direction taken from antenna and so on to implement target ' s orientation and tracking
具體研究方法如下： 1 、採用以輸出信噪比最大為準則的最佳匹配濾波器來對分段的參考和目標信號作相關處理來檢測低信噪比目標信號，然後對一維分段相關輸出組作縱向傅立葉變換來濾除靜態或低速的雜波、多徑回波等干擾信號，並提取目標的時差和多普勒頻率，再結合由天線獲得的目標方向等參數，就可以實現目標的定位和跟蹤。 -
Then an overview of the principle of sar is given, the computer model of the radar echo is discussed in detail, the simulation result of the ideal static point target and ideal static distributed target based on the computer model are presented
在闡明合成孔徑雷達基本原理的基礎上，深入地探討了合成孔徑雷達的回波模型，並藉助此模型分別進行了理想靜止點目標和分佈目標的回波模擬。 -
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。 -
Based on the above, the paper analyses the echo model of sar moving target and the impact that caused by the velocity of moving target in sar image with imaging theory. then the paper gives the intensity image of the real part of the echo for both static and moving targets, and the paper gives their imaging picture generated by r - d algorithm as well
在此基礎上，本文推導出了運動點目標的回波模型，並結合成像原理分析了運動目標速度對sar圖像的影響，最後給出了靜、動目標回波的實部灰度圖及其r - d演算法成像圖，並進行了分析和比較。 -
New algorithm and new structure have been developed to make the equalizer to get better performance on combating with seriously distorted channel fading : strong echo fading, large delay spread static and dynamic echo fading. main contents of this paper are as follow : in the first chapter, the history > present situation of the dtv system is presented. five dtv terrestrial broadcasting systems are introduced and two of them are compared, e. g
本文主要內容如下：第一章概述了數字電視技術的發展歷史和目前的狀況，給出了目前已經成型的5種地面廣播標準；對兩種比較典型的傳輸標準： dvb - t和atsc作了性能對比分析，並將比較的焦點集中到對抗強多徑衰落和長時延的靜態和動態多徑衰落的性能上。
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