vna 中文意思是什麼

vna 解釋
道式
  1. Due to the incompletion of the hardware part, the system software simulation of the vna ' s measurement process verifies the stability of the system software and the feasibility of the software design

    局限於硬體部分的尚未形成，通過對系統軟體設計軟體模擬進行測量過程的模擬以及測試結果的驗證，證明了系統軟體能夠平穩運行，設計合理。
  2. Familiar with the application of equipment like spectrum, vna, etc

    熟悉電子通信領域常用儀器（頻譜儀，矢量網路分析儀） 。
  3. Vietnam ' s state - run vna news agency says mr. dung ' s comment followed a meeting monday with world bank president robert zoellick

    官方的越南通訊社說，阮晉勇總理星期一在會見世界銀行行長佐利克后做出上述評論。
  4. The multi - port measurement system has the widespread use in microwave measurement, the measurement of multi - port device with two - port vector network analyzer ( vna ) is researched. this paper analyzes the commonly used error models and calibration methods of vna, program a trl calibration procedure for two - port vna, and compare the tested data with the data from vna. the comparison show that the programmed trl calibration procedure is in the same accuracy as the vna

    本文討論了兩埠矢量網路分析儀常用的誤差模型和校準方法，編制了兩埠矢量網路分析儀基於trl校準法的校準程序，並把校準后的測量結果和矢量網路分析儀校準后的測量數據做了比較，比較結果說明編制的trl校準程序校準效果和矢量網路分析儀校準的效果相同。
  5. The measurement system can automatically control the movement of servo motor and communicate with vna through gpib bus to setup the measurement variable automatically, measure the phase of s parameter. it also can progress the measurement data on the background, display the results by graph data, store them in the data files

    系統自動控制伺服電機的運行，對測試探頭完成指定的移動定位;通過gpib總線與矢量網路分析儀器通信，自動完成相關測量參數的設置以及s參數的相位測量;對測得的數據進行后臺處理，將結果以圖形、數據文件的方式顯示、保存。
  6. The comparison between the vna test result with the test result of three - port test system show the test system is valid and the test result is accuracy

    測試結果表明，三埠誤差模型、校準方法和測試方法是正確可靠的。
  7. The measure system is based on virtual instrument technology. its hardware includes measurement flat, servo motor, vector network analyzer ( vna ) etc. and its software is programmed by labview

    測量系統採用虛擬儀器的設計思想，由測量平臺、伺服電機、矢量網路分析儀、計算機等硬體組成，用labview完成了系統軟體設計。
  8. Three - port error model is analyzed and the procedure for control, calibration, test and display of this system is programmed. three - port device with one port terminated with a 50ohm termination is tested with two - port vna

    分析了三埠測量系統的誤差模型，編制了誤差模型的校準程序和整個系統的測量程序，實現了控制、校準、測量的自動化。
  9. The paper conducts a thorough research of the method and principles in vna measurement, and performs detailed requirement analysis of system software relying on the hardware architecture. based on the requirement analysis, a detailed layered design is put forward, which partitioned the system software as three parts : user interface, data processing, hardware interface along with pci communication

    論文首先詳細研究了矢量網路分析儀的測量方法和測量原理，然後基於硬體構架對系統軟體進行了詳細的需求分析，在需求分析的基礎上進行了總體結構設計以及詳細的分層設計，把系統軟體的組成劃分為用戶控制界面、數據處理、硬體介面與pci通信三個部分。
  10. We also discuss the design of cavity that is used in experiment 、 means for how to stir electromagnetic wave and choice of diameter / length ratio for cavity. final, we have made an experiment to cigarette with apparatus made up of vector network analyzer ( vna ) and cavity that is designed by ourselves, regressed the equation with matlab software, analyzed measurement errors, put forward some means that reduce measuring error

    最後，使用自己設計的諧振腔和矢量網路分析儀搭成的實驗裝置對卷煙進行了密度測量實驗研究，並用matlab軟體對測量數據進行了回歸擬合，建立了密度測量的方程，並對測量誤差作了分析，提出了進一步減小誤差的途徑。
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