over-wave performance 中文意思是什麼

over-wave performance 解釋
波面航行性能
  • over : adv 1 在上，在高處；從上向下；突出，倚靠；越過。 jump over 跳過。 climb over 爬過。2 在那邊，向那...
  • wave : n 〈美海軍〉女志願軍人〈見 WAVES 條〉。n 1 波浪；碎浪； 〈the wave（s）〉 〈詩〉海。2 波動；波狀...
  • performance : n. 1. 執行，實行，履行；完成；實現；償還。2. 行為，動作，行動；工作。3. 性能；特性。4. 功績；成績。5. 演奏；彈奏；演出；（馴獸等的）表演；把戲。6. 【物理學】演績。
  1. It is necessary to study the unsteady nonlinear aerodynamic characteristics of a wig flying in air with disturbed waves for the design of high - performance wig vehicle, especially for the subject that how to improve the safety, maneuver ability near sea wave, and economics of the wig flying over sea waves

    研究地效翼在風浪擾動氣流場中掠海飛行的非定常氣動力問題，對于高性能地效翼船的設計，特別是對于提高地效翼船在風浪中飛行的安全性，操縱性以及經濟性都是十分重要的。
  2. This thesis analyzed the error performance of mfsk and mpsk modulator in hf with optimal receiver, studied the shortcoming and strongpoint of several typical short - wave data transmission systems and their performance over fading and intersymbol interference channels. the theory and key technical of adaptive modem is discussed. in the last, an efficient modulation scheme - block coded modulation is introduced into hf radio systems to improve the efficiency of hf data transmission, this paper also proposes a hf data transmission system scheme composed of a block coded modulator and a decision feedback type adaptive equalizer

    本文在對短波數傳兩種常見調制方式fsk及psk最佳解調性能分析的基礎上，討論了幾種採用典型調制技術的短波數傳系統（如時頻調制、多進制頻移鍵控慢跳頻、 chess系統）原理、優缺點以及抗衰落和抗符號間干擾的性能；分析了自適應串列數傳系統抗短波通道衰落和多徑干擾的原理、關鍵技術；在本文的最後引入一種有望解決短波數傳系統低效率狀況的調制方式bcm -分組編碼調制，給出了一個採用bcm技術與自適應均衡技術相結合的短波數傳系統方案，並通過計算機模擬進行了初部驗證。
  3. According to state - of - the - art of evaporation duct propagation research, and to meet the demands on the prediction techniques of evaporation duct environment and the assessment of radar performance under evaporation duct environment, this dissertation gives a thorough research in depth on the subject described above. the researches include the prediction theory of evaporation duct and its applications, the theory of ray tracing based on which the prediction of radio wave rays are conducted and its application to the predicting of radar range performance under a given evaporation duct, and the characteristics of tropospheric ducts over china

    根據上述情況，結合我國盡快得到蒸發波導環境預測技術及在其中運作無線電系統的性能預測技術等需求，本文針對蒸發波導傳播及其相關應用這一熱點難點問題較深入地研究了蒸發波導環境預測技術的理論及其應用、蒸發波導環境中雷達探測性能評估所要求的基本理論之一? ?射線描跡技術及其在代表性蒸發波導環境中雷達探測性能評估技術方面的應用和我國應用所需的我國大氣波導環境特性等幾個方面。
  4. The adaptive signal processing technology is a rising science embranchment, which composed with many subjects and fields. in this paper, application of the adaptive filter to elimination of the leaked triangular wave and the adaptive signal processing of the fmcw millimeter - wave radar system is studied thoroughly. the use of an adaptive filter offers an attractive solution to the problem as it usually provides a significant improvement in performance over the use of the conventional methods

    在系統的自適應信號處理研究中，系統實現採用稱為自調諧濾波器的自適應對消器，結果表明，在自適應過程結束后，利用該方案可以得到和原始攜帶信息的理想干弦波十分近似的正弦波輸出，其誤差是一個具有很小振幅的隨機過程，具有很好的濾波效果。
  5. Through the monitoring on the frequency performance and square - wave response performance of manganese - zinc ferrite coil with different sizes., different ratios of winding and different matching impedances, the result shows that manganese - zinc ferrite coil with proper ratio of winding and matching impedance can effectively restrain the interference and damage which the over - voltage and large - current signals of the power system do to the on - line monitoring system

    通過對不同尺寸、不同匝數比和不同匹配阻抗下的錳鋅鐵氧體線圈的頻帶性能、方波響應性能測試實驗，結果表明：適當匝數比和匹配阻抗的錳鋅鐵氧體線圈可以有效地抑制系統過電壓和大電流信號對在線監測系統干擾和破壞。
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