seismic recorder 中文意思是什麼
seismic recorder
解釋
地震記錄儀-
The principle of vibrator is to introduce scattered energy to underground in a comparatively long time, and collect the energy through correlation and compress it into a narrow pulse. the portable high - frequency vibrator system, developed by key lab of geo - exploration and instrumentation ( jilin univ ), ministry of education, generates chirp signal and accumulates energy through a long - time bestiring. according to the characteristics of vibrator, the seismic recorder that operates on - line with vibrator must have these functions as follow : first, it must have the ability of recording a great quantity of data. second, it must have assistant channels to sample reference signal. third, it must have the function of data correlation in real - time
可控震源利用可控的小能量、長時間激發波來實現沖擊震源瞬時產生的大能量激發波。在利用可控震源進行地震勘探時，要求地震儀長時間記錄地震信號，這對地震儀的采樣長度提出了很高的要求。受存儲量和數據傳輸速度的限制，絕大多數地震儀很難對如此大的數據量進行記錄，同時，可控震源要求地震儀有兩個輔助通道並且具有數據相關功能，目前國內還沒有出現滿足要求的地震儀產品。 -
Cheching items and technical specifications for ykz480 seismic data recorder
Ykz480遙測數字地震儀檢驗項目及技術指標 -
This paper gives a time - synchronization technique bases on gps time service signal which is used in broad band seismic recorder 。 by world coordination time offered by gps - - utc ( usno ), adjust local clock base on gps signal, gain high nicety clock signal, clock precision reachs 10 - 6 。 this clock is the time source of broad band seismic recorder, bring the whole seismic recorder works in same time base. 1pps time base with high stability can be used as in - phase, spring, time and start - stop of every collection mode, while the scale under second make a precise time mark to receive data of broad band seismic recorder
針對接收機中gps信號的噪聲進行kalman濾波軟體處理， kalman濾波可以對gps信號與本地晶振時鐘的時差數據在大噪聲中進行平滑，在較短時間內估計出高精度的時差數據。系統消除了gps秒脈沖信號的ms級隨機誤差，把晶振秒脈沖的長期穩定度鎖定到gps信號的穩定度上;在gps信號失效時給出了可行措施，能夠保證在任何情況下產生一個穩定、高精度秒脈沖信號，誤差在1 s內。 -
The thesis aims to give a scheme of designing a 48 - channel collected seismic recorder based on pci bus, and a testing machine has been completed in the basis of the scheme. pci bus provides a high data transfer speed, which solve the problem of transfering a mass of data in a short period of time ; moreover, two assistant channels are provided to sample reference signal ; the function of data correlation in real - time is also provied in the software of the instrumental system
論文論述了pci總線功能介面的實現和數據採集模塊的設計，給出了利用pci9054介面晶元設計pci介面的詳細過程，並利用driverstudio為pci數據採集系統編寫了設備驅動程序;在數據採集模塊的設計中，主要完成的工作有多通道數據採集、浮點放大以及系統的低噪聲設計，並利用cpld設計了整個系統的時序邏輯。
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