synthetic signal 中文意思是什麼
synthetic signal
解釋
模擬信號-
It has important value in military and civil. conventional algorithms for synthetic aperture radar uses the matched filter and convolves the data with a reference phase signal which changes with range
合成孔徑雷達（ sar ）是二戰后發展起來的一種新的雷達技術，在軍事和民用方面都有重要的應用價值。 -
The synthetic maintenance corporation on the principle of " one job with multi - duty " and reducing the fixed number of employees and departments, is in charge of regular maintenance of track, signal, bridge, buildings and tunnel structures, intermediate and overhaul repair of signal, buildings and structures, supply of water and electricity
固定設備的其他養護維修由綜合養護維修公司負責，按照維修中心模式統一管理固定設備的養護維修，按照一職多能、壓縮機構、減少定員的原則。公司不設置線路、橋隧和路基等大修單位，需要時可以對外招標承包完成。 -
In order to find the detecting signal characteristics of all kinds of flaws for ect and ac - mfl, itestablished the signal analysis method based on rectangular flaw, which was validated throughthe experimental research on ect and the emulational research on ac - mfl for different shapeand dimension flaws. the method was explained that a flaw with an arbitrary shape can berepresented as a set of flaws with the simplest rectangular shape. as the synthetic application of these researches, the problem of defect detection of bolt wasresearched
為實現螺紋區域中的缺陷檢測，提出了提取局部極大值的缺陷識別方法;並根據位置的不同將缺陷分為螺桿結合部缺陷、螺紋區域缺陷以及螺紋尾部缺陷三類，對每類缺陷的信號特點進行了分析，給出了缺陷檢測的判據，並通過實驗驗證了識別方法的可靠性;最後對螺栓頭桿結合部的缺陷檢測進行了實驗研究，並根據信號特點建立了相應的缺陷檢測方法。 -
The railway infrastructure corporation, responsible for the fixed facility maintenance and operation which include buildings and structures maintenance, water and electricity supply, signal repair and track maintenance, is composed of mechanized track maintenance corporation and synthetic maintenance corporation
固定設施運營維修由機械化維修公司和固定設施綜合維修公司組成，集房建、信號、水電和線路設備養護維修於一體。線路設備綜合維修和檢查檢測以機械化為主，由機械化維修公司負責。 -
Moreover, the signal processing method of high range resolution based on inverse discrete fourier transform is analyzed. the synthetic high range resolution of the several scatters is simulated
此外，本文還闡述了頻率步進信號的逆傅立葉變換合成距離高分辨的處理方法，並對多散射點目標的合成距離高分辨效果進行了計算機模擬。 -
On introducing a new method of complexity measure analysis, the authors manage to inspect the circuit fault status by analyzing synthetic signal
作者引入了一種新的復雜性分析的方法，利用綜合性信號監測電路故障狀態。 -
In this paper, researching and producing on current waveform control system of inverter carbon dioxide welding machine is given. the overall plan, the design of hardware structure, the programming and debugging of software is described in detail. the bang - bang and alterable structure discrete pid synthetic control algorithm are used to modulate the width of pwm signal in real time, to acquire the fiat character by driving and controlling the opening and shutting time of igbt, the technology of " double impulse " is adopted to realize electric current waveform control
本文介紹了逆變波形控制co _ 2焊機控制系統的研製，詳細闡述了總體方案的制定、硬體研製及軟體的編寫與調試，採用變結構、離散型pid + bang - bang復合控制演算法、實時調節輸出pwm信號的脈沖寬度，驅動控制用於逆變的大功率開關管igbt的開通與關斷時間，獲得逆變焊機平外特性。 -
In the computer - testing system of current signal measurement of current - source in synthetic circuit, the following contents are included, such as voltage - frequency converting technique, optical fibre isolating and transmitting technique, singlechip testing and controlling, plotting and printing of sampled data on pc ( personal computer )
電流源電流信號的計算機測試系統包括傳感元件部分、壓頻轉換部分、光纖隔離傳輸部分、單片機測控部分以及pc機對採集數據的波形繪制與列印部分。 -
The main work is given as follows : the stepped - frequency waveform synthesizing the wideband signal, the synthetic range profile ( srp ) by ifft, the range resolution of stepped - frequency waveform, the effect of the radial velocity on the srp, the radial velocity compensation, ambiguity function, waveform design and stepped frequency sar imaging and so on
包括：頻率步進波形合成超寬帶信號分析， ifft方法獲得目標一維距離像與距離解析度分析，徑向速度對目標距離像的影響、速度補償、頻率步進信號的模糊函數分析，以及頻率步進波形照射下的合成孔徑雷達成像、波形設計與系統設計。 -
At present, more and more people focus on the research of the synthetic aperture radar ( sar ) echo signal simulator, which is the necessary instrument for the design, research and test of sar system, and have already completed the sar echo signal simulator based on point target and simple distributed target
合成孔徑雷達（ sar ）回波模擬技術是合成孔徑雷達設計、研製和測試的必要手段。目前sar回波模擬器的研究已經成為熱點課題，且已有基於點目標和簡單分佈目標的回波模擬器系統，但國內這方面起步較晚，尚待進一步研究完善。 -
The most important and difficult contents of this paper are the research and development of the computer - testing system for current signal measurement of current - source in synthetic circuit
本文重點在於合成迴路中電流源電流信號計算機測試系統的開發與研製。 -
To illustrate the influence of different regularization operator on the inversion of water content distribution from surface nuclear magnetic resonance ( nmr ) signal, synthetic data of noise free and contaminated have been investigated
摘要不同的模型約束對基於正則化反演技術的地面核磁共振測深數據反演影響很大。 -
Dicom ( digital imaging communication in medicine ) is a typical symbol of the two subjects, which " is a synthetic application of computer, network, digital signal processing, store technology
Acr和nema聯合制定的icom標準就是新型學科的典型代表。它是計算機，網路通訊，數字信號處理，存儲技術的綜合應用。 -
Based on the analysis of ultrasonic imaging theory, the paper puts forward a signal processing scheme in synthetic aperture focusing technique
本文首先介紹了超聲成像的理論基礎，分析了脈沖回波系統解析度不高的原因及一般改進措施。 -
At the end of the chapter, a multi - task fault diagnosis expert system is built and it runs under the control of mixed inference strategy. chapter five introduces the task part strategy following the idea of " part - fusion ". two kinds of synthetic models of same signal - based multi - feature information and muilt - signal - based information are discussed
第五章依據「分解一綜合」的故障診斷思想，介紹了設備故障診斷的任務分解策略，提出了同源多特徵信息綜合和異類多源信息綜合兩種典型綜合診司斷模型。 -
Firstly, the fundamentals of synthetic aperture radar have been briefly introduced and the radar return signal of point target has been constructed
論文首先簡要介紹了合成孔徑雷達的基本工作原理，建立點目標雷達回波模型。 -
Rapid development of data business, growing of packet network technology, and increasing of communication channel capacity, etc, bring this problem the answer : the next generation network will be base on the ip, and it will be to consist of network architecture which are diverse, synthetic and open such as speech sound, data, multimedia etc. the principle of voip ( voice over internet protocol ) is not complicated : at the sending end, sample the analogue speech sound signal, code and compress, then package and transmit it over the packet network
數據業務的快速發展、分組網路技術的成熟、數據網路通信通道容量的不斷增加等給這個問題提供了答案：下一代網路將是基於ip的，下一代網路將是可以提供包括語音、數據和多媒體等各種業務的、綜合的、開放的網路構架，而voip正是這個答案的具體體現。實現voip的原理並不復雜：將模擬的語音信號采樣、編碼並進行壓縮，封裝在數據網路的分組中進行傳輸，在接收端對數據進行解碼、數模轉換恢復成模擬信號即可。 -
Consisted of adsp21060 - sharc parallel 32 - bit floating point dsp, distributed parallel system and shared bus parallel system will satisfy signal processing tasks in sar application fields. this paper discusses range - doppler ( rd ) algorithm and two - dimension detachable algorithm in the side - looking model in synthetic aperture radar ( sar ) respectively, then studies the realization on multi - chips adsp21060 sharc dsp system
以美國ad公司的adsp21060 - sharc （超級哈佛結構計算機）系列并行32位浮點dsp構成的分散式并行系統和共享總線式并行系統，可以滿足綜合孔徑雷達（ sar ）應用領域的信號處理任務。 -
( 1 ). here we build the system space geometry model : the transmitter and receiver fly on different platforms and at different height, two flight paths are unparallel. based on the chirp signal and the taylor series, we analyze the range history and synthetic aperture time, then demonstrate the equation of the azimuth resolution about air - born bistatic spotlight synthetic aperture radar, meanwhile we obtain the equations of doppler bandwidth and doppler frequency modulate rate
本文以機載聚束式合成孔徑雷達成像作為研究背景，主要完成了以下幾方面的工作: （ 1 ）建立了一種機載雙站聚束式sar空間幾何數學模型，對方位分辨力進行了理論分析，進行了數值分析與模擬，討論了不同條件對雙站聚束模式sar系統分辨力的影響。 -
1khz 10mhz synthetic signal generator
合成信號發生器
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