coherent pulse 中文意思是什麼
coherent pulse
解釋
相干脈沖-
Coherent pulse radar
相干脈沖雷達 -
Synthetic aperture radar ( sar ) is a kind of coherent pulse radar which appeared in 1950. it can improve space resolution by fully using the signals " coherence
合成孔徑雷達（ sar ： syntheticapertureradar ）是20世紀50年代發展起來的一種相干雷達。 -
Advantages, disadvantages and limits of arm are thoroughly examined using signal processing methods. based on the above, incoherent and coherent two - point - source decoy methods and modified coherent two - point - source decoy methods to deflect arm are brought forward. arm ’ s homing heads are generally of mono - pulse structure, so coherent two - point - source ’ s interference resembles that to mono - pulse radar except that interference to radar belongs to far field scope, but interference to arm varies from far field to near field because relative distance drastically changes between the homing head and the two - point - source with missile ’ s homing head continually approaching the target
Arm的導引頭一般為單脈沖體制，因此，相干兩點源對導引頭的干擾類同於對單脈沖雷達的干擾，不同的是:對雷達的干擾都是遠場，而導引頭隨著導彈不斷接近目標，兩點源與導引頭的相對位置發生劇烈變化，由遠場變化到近場;導引頭天線口面上的合成場也發生了大的變化，相位波前的畸變產生干擾，這就是相干兩點源誘偏的基本思想。 -
In this paper, the application of coherent phase - coded pulse train ( cpcpt ) solves range - doppler coupling well
應用相參頻率編碼脈沖串信號（ cpcpt ）較好地解決了距離-多普勒耦合問題。 -
With double - frequency technique and q switch technique the laser delivers a laser pulse of 532 - nm in wavelength, 5 - ns in pulse width, 35 - mj in energy and 2 - cm in coherent length
所用激光器為nd : yag脈沖激光器，採用了調q和二倍頻技術，波長為0 . 532 、脈沖寬度為7ns 、相干長度為2cm ，能量為35mj 。 -
Coherent pulse integration
相干脈沖積分 -
The anti - jamming technology include sidelobe canceller and sidelobe blanking, the effect of these anti - jamming technology are presented also. in the chapter 4 the modeling of targets reflection signals are described, these signals consist of coherent pulse, chirp and barker sequences
第四章討論了雷達回波信號的建模，主要涉及到的信號有相參脈沖信號、線性調頻信號及巴克碼信號，分析了它們各自工作在何種環境下及各自的特點。 -
In the subsystem of signal processing, digital sidelobe cancell block, digital pulse compress block, adaptive clutter canceller block, doppler filter and constant false alarm rate block are respectively discussed and set up. in signal processing, data in the same coherent processing interval form a matrix, and the data processing was completed based on the matrix. data are processed with the row vector or column vector respectively when needed
在信號處理分系統中，將脈沖壓縮得到的數據在各個相干處理區間進行處理，將一個相干處理區間的數據按照不同的脈沖重復周期和不同的距離單元排列成一個矩陣，當需要實現數字脈沖壓縮時對矩陣的各行（同一個脈沖重復周期的數據）進行處理，當需要實現多普勒濾波時，就對矩陣的各列（同一個距離單元的數據）進行處理。 -
The fourth section studies the modeling of broad band blocking jamming and coherent jamming, and analyses the principal of coherent jamming and the factors of influencing the jamming effect is provided. the performance of pulse doppler radar seeker is simulated when certain jamming methods is exerted. a pulse doppler radar seeker simulation system is established, by using the simulation system the performance of pulse doppler radar seeker is evaluated when jammed
第四部分研究了寬帶阻塞式干擾和相干干擾的建模問題，並分析了相干干擾作用原理，給出了影響干擾效果的主要因素及次要因素，模擬了脈沖多普勒雷達導引頭在寬帶噪聲干擾情況下的截獲和跟蹤性能，模擬了相干干擾對脈沖多普勒雷達導引頭跟蹤性能的干擾效果。 -
In the paper, a coherent video signal simulation is applied to model and simulate a pulse doppler radar seeker
本文採用相干視頻信號模擬方法對脈沖多普勒雷達導引頭進行了建模和模擬研究。 -
Based on the method, exploiting the coherent property of pulse train, the accurate estimation of signals is obtained
以該演算法為基礎，結合相關譜和脈間相參信息，得到正弦脈沖信號頻率的精確估計。 -
A coherent electromagnetic pulse in the range between the far - infrared and microwave region is used as a detection source. the amplitude of the wave is recorded by electro - optical or photoconductive sampling. after fast fourier transform, the amplitude and phase of the wave is given, then the complex refractive index standing for the absorption and dispersion of the material in thz region is extracted
Thz （ 10 ~ （ 12 ） hz ）時域光譜技術是20世紀90年代發展起來的一種新型的光譜測量技術，它使用頻率介於遠紅外和微波之間的相干電磁輻射脈沖作為探測源，利用電光取樣或光電導取樣的方法直接記錄thz輻射電場的振幅時間波形，通過傅立葉變換得到測量信號振幅和相位的光譜分佈，進而獲得材料在thz波段的復介電常數，即色散及吸收等信息。 -
A fast and accurate algorithm to estimate the frequency of a coherent pulse sinusoid is presented in chapter 3. it is based on the autocorrelation iterative method, and the simulation results show that for the lower snr, this algorithm can accord with the request of the soplat ’ s precision and less computational complexity. therefore, it ’ s a promising algorithm for practical application
在對正弦脈沖信號的頻率估計中，第三章在總結、比較前人演算法的基礎上，選擇了基於自相關迭代的頻率精確估計演算法，並進行模擬分析，結果表明，該演算法在較低信噪比時，可以達到單站無源定位所要求的估計精度，且運算量小，具有廣闊的應用前景。 -
In this dissertation, several technology problems of pulse trains deintrleaving algorithms are dealt with, they are presorting techniques based on coherent processor, probabilistic neural network deinterleavers, adaptive data association methods for pulse trains analysis and deinterleaving, signal processor designing issues. the research is focused on real time processing. the coherent processor is a crucial technique for real time presorting
本論文研究高密度復雜信號下的脈沖列去交錯技術的若干問題，包括基於關聯比較器的信號預分選技術研究；概率神經網路脈沖去交錯器的研究與設計；卡爾曼濾波和概率數據關聯方法用於脈沖列分析和去交錯；雷達截獲系統信號處理器設計等等。 -
Numerical simulations of evolutions from wall pulse to turbulent coherent structures
從壁面脈沖到湍流相干結構演化的數值模擬 -
Extraction of the in - pulse characteristics of signal based on direct sampling from if signal and quadrature coherent detection
基於中頻直接采樣正交相干檢波技術的信號脈內特徵提取 -
The paper introduces the history of bbadcp, discriminates the different among pulse - incoherent system, pulse - coherent system and pulse - pulse coherent system, analyzes the characteristic of bbadcp " s signal and explains how bbadcp works by reasoning
介紹了bbadcp的研究狀況，比較了幾種測流技術，分析了bbadcp的信號特性，仔細推理了bbadcp的工作原理。採用基帶模擬的方法建立了bbadcp的計算機模型。 -
The drfm permits generation of appropriate radar returns to chirped, frequency coded, phase coded, pulse coded, or other similar type coherent radars with pulse to pulse or cw modulations
在另一些情況下，需要將不同於接收到的雷達信號的特徵的信號返回雷達系統，用來進一步使雷達系統混淆工作。
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