scan frequency 中文意思是什麼
scan frequency
解釋
掃描頻率-
Progressive scan high - frequency mode
逐行掃描 -
The research results are controlled source which has linear or nonlinear variabe frequency scan function and the seismic instruments which match with it, and the method of small group intervals, small offset, much more channels, short array length, high - frequency receivers are applied during the link of data acquisition, and that the techniques of the refraction static correction, the noise suppressing, the high - resolution velocity analysis, the wavelet length compression, the wavelet zero - phase, and the prestack migration should be applied emphasizedly during the link of data processing and interpretation
研究表明，對于城市活斷層的抗干擾高解析度淺層地震勘探，在數據採集環節應採用具有線性或非線性變頻掃描功能的可控震源和與其相匹配的地震儀器，以及小道間距、小偏移距、多接收道、短排列和高頻檢波器接收的工作方法；在數據處理與解釋環節，要重視折射靜校正技術、噪聲壓制技術、高精度速度分析技術、子波壓縮技術、子波零相位化技術和疊前偏移技術等的應用。 -
This article according to the acquirement of the system parameters such as : temperature sensitivity 、 angle resolution 、 image forming time etc to design the type and diameter of the antenna ; the receiver type, integral time, rf gain, lpf gain ; the mode of calibration ; the sample frequency and program of the daq ; the scanning time, scan type, etc
本文根據系統溫度靈敏度、角解析度、成像時間等參數要求，對系統天線類型、直徑，接收機類型、積分時間、射頻增益、視頻放大器增益，定標方式，數據採集卡的采樣頻率、編程及驅動裝置的掃描速度、掃描類型等進行了詳細的分析設計。 -
The thesis concludes that spectrum scan speed can reach 680mhz / s at 1khz frequency resolution when it has 8192 points complex data
本文研究指出，譜分析數據量為8192點復數據時， 1khz頻率解析度要求下的掃描速度可達680mhz s以上。 -
The wrap - up ratio is the ratio of the sine of the maximum scan angle to the percentage change in frequency required to scan
綜合比率是最大掃描角的正弦與所需的頻率變化百分率之比。 -
4. the theory of cavity enhanced absorption spectroscopy is studied in detail and the numerical simulation is firstly demonstrated. in addition, we analyze the variation of sensitivity and linearity of this technique with the scan speed of incident light frequency or absorption cavity length
深入研究了腔內增強吸收光譜的理論，首次給出了具體的解析表達形式及數值模擬計算結果，分析了腔內增強吸收光譜測量的靈敏度、線性度與激光頻率掃描速度、吸收腔長改變速度的關系。 -
In recent years, radio technology has developed very quickly in our country. however, a radio monitoring receiver with broad frequency scale ( 20 - 3000 mhz ), high scanning rate ( above 1ghz / s ) and whole spectrum real - time display has not developed. some imported monitoring receivers with broad frequency scale can only scan slowly and could n ' t meet actual needs. not only these imported receivers " price is high but also those developed countries usually limit the quantities of imported receivers and related technology is not open
近年來我國無線電技術水平已經有了很大發展和進步，但對于頻率覆蓋范圍寬（ 20 - 3000mhz ） 、掃描速度快（ 1ghz / s以上）並具備快速全頻段實時頻譜顯示和記錄的無線電監測接收設備，目前我國尚不能生產，國內現在已經進口的寬頻段監測接收機一般也只能進行低速掃描，無法滿足實際的需要。 -
Television analog recording - 1 - in type b helical scan - frequency response and operating level
電視模擬錄制. 1英寸b型螺旋掃描.頻率響應和運行級 -
Secondly, it provides the technological requirement and the whole device frame. the process of development is illustrated by software and hardware ( emphasis on software ). it also provides the introduction of dsp, frequency scan, channel scan, radio direction finding and signal analysis, ect
其次，提出了短波監測設備的技術要求和總體設計框圖，並從軟硬體兩方面（重點是從軟體方面）對研製過程進行了陳述，對dsp選型、頻段掃描、通道掃描、信號測向和信號分析等做了說明。 -
Frame scan frequency
幀掃描頻率 -
3. scan frequency is over 200hz : using over 200hz frame scan frequency will have good vision effect
3掃描場頻大於200赫茲：使用幀掃描頻率200hz以上，有很好的視覺效果，人肉眼幾乎 -
By the advantage of high precision, strong anti - interference ability, long lifespan, etc, grating scale is the chief sensor in displacement measurement. however, as is restricted by the beam path structure, the scan frequency of the scaning circuit, etc, the maximum available measuring speed has a inverse proportion relationship to the measuring pace of a single grating scale
光柵尺具有精度高、抗干擾能力強、壽命長等優點，成為微納米位移測量的主要工具，但由於受光路結構及信號檢測電路掃描頻率等因素的限制，單個光柵尺測量的最大允許移動速度與其測量步距成反比。 -
The system can scan the wideband frequency 、 lock the frequency of receiving data and convert the if signal to digital data timely. directly sampled data by a / d or saved data by sdram ( when signal speed is too high ) can be transmitted to pc by usb2. 0 or to dsp by link port in order to complete the modulation detecting and intercepting of signals
信號經高速a / d變換可以實時或經sdram緩沖后（當采樣速率過高時）由usb2 . 0總線傳入pc或由linkport傳入後端雙dsp綜合信號處理板進行調制識別處理（或接收由雙dsp信號處理完的數據並傳入pc機完成後續運算處理） ，完成無線電監測。 -
The item of attribute frequency in the scan vector was taken as heuristic information to improve the efficiency of attributes reduction
以掃描向量中的屬性頻率項作為屬性約簡搜索的啟發信息，提高了屬性約簡效率。 -
The techniques introduced include the imaging of surface - opening cracks, the three dimensional scan of surface - opening cracks, and the imaging of internal defects using time domain or frequency domain signals
本文介紹數種利用彈性波建構混凝土缺陷影像的技術，包括表面裂縫影像法、表面裂縫三維掃描法，以及時間域和頻率域的內部缺陷影像法。
分享友人