frequency-sweep method 中文意思是什麼

frequency-sweep method 解釋
掃頻法,頻率掃描法
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • sweep : vt （swept ）1 掃（房間等），掃除，打掃；刷，撣（灰塵等）。2 （像掃一樣）吹去，颳去，沖去 （along...
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. The technology renovation project " application of frequency sweep microwave interferometer method to the measurement of electron densities in the wake of hypervelocity projectiles " is the research work of this thesis

    具體要求是將所研製的掃頻式微波干涉儀應用於某氣動物理靶中對等離子體尾跡進行電子密度的測量。
  2. In addition, it also describes the method of designing microwave interferometer diagnosis systems. in chapter 4, the frequency sweep microwave interferometer diagnosis system is designed in detail and it ' s issues and errors are described

    第四章詳細地設計了氣動物理靶尾跡掃頻式微波干涉儀診斷系統，提出了的設計思想，並說明了這類干涉儀要注意的問題。
  3. Frequency sweep flight technique is used to collect the flight data of a model helicopter near its hover and low speed working condition, window frequency spectrum is combined to obtain the frequency response of both lateral and longitudinal channels, then weighted fitting method is utilized to obtain the transfer functions of the two channel

    摘要利用掃頻試飛技術獲取了某無人直升機在懸停工作點附近的舵機輸入和直升機動態輸出數據，利用組合窗頻譜分析的方法獲取了直升機橫滾通道與俯仰通道動態的頻率響應特性，利用加權擬合的方法獲取了各自的傳遞函數。
  4. In chapter 3, the non - linear equation was linearized with the jacobi matrix, and then the linearized equation was transformed into fixed frame to analyze the stability problem with eigenvalue method ( on - ground or hovering ) or floquet theory ( forward flight ). meanwhile, the equation was perturbed by sweep frequency excitation from steady state to get transit decay of lag response which was then transformed into fixed frame with a numerical fourier coordination transformation ( fct ). the fixed frame response along with the body response was analyzed via an fft to determine modal frequencies

    然後，在穩態響應的基礎上利用雅各比矩陣對非線性方程進行了線化，線化后的方程利用多槳葉坐標變換轉換到固定系下后，利用直接特徵值分析（地面、懸停）或floquet理論（前飛）對系統進行了穩定性分析;同時，對系統進行了瞬態響應分析;在系統達到穩態的基礎上進行掃頻激勵，用fft變換求得系統頻率，進而用移動矩形窗方法分析得到系統的阻尼。
  5. Main contents included are : 1. analyzed, simulated and validated the effect of power fluctuation and the nonlinearity in frequency sweep on radar practical ranging precision, and the validating method of nonlinearity in frequency sweep

    主要內容為: 1 .分析、模擬並驗證了掃頻非線性對雷達實際測距精度的影響、掃頻非線性的校正方法。
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