uwa 中文意思是什麼

uwa 解釋
表
  1. The thesis analyzes the transmitting characteristic of the uwa channel, derives the propagation losses, eigenrays and channel impulse responses of uwa channel by use of the kraken normal wave mode and the ray trace algorithm based on velocity - depth curvilinear profile approximation. based on the analysis, a scheme of auto - replying lduwarc system by means of spread spectrum technique has been designed

    論文首先分析了遠程聲遙控通道傳輸特性，分別利用kraken簡正波和射線跟蹤模型對深海和淺海水聲通道的傳輸特性進行分析，對通道的多徑結構、衰落和環境噪聲進行了計算，並在此基礎上設計了基於擴頻技術的自主應答式遠程聲遙控系統方案。
  2. In order to achieve high data rates on the severely band - limited underwater acoustic ( uwa ) channels, bandwidth - efficient modulation techniques must be employed, together with some sophisticated signal processing algorithms, such as adaptive equalization technique for the intersymbol interference caused by channel multipath propagation

    在帶寬嚴重受限的水聲通道中實現高數據率通信，必須使用高帶寬利用率調制技術，並結合自適應均衡等技術以有效地克服通道多途傳播產生的符號間干擾。
  3. 2. a uwa communication system is designed, lake experiments are also conducted with several equalization methods being employed. one key of the techniques in underwater acoustic communication - synchronization technique is studied

    在吉林松花湖作了水聲通信試驗，驗證了上述演算法的模擬結論，並對水聲通信的關鍵技術之一的相關同步技術進行了分析研究。
  4. Achieving high speed uwa underwater acoustic communication with adaptive momc multimode orthogonal multicarrier technology

    自適應多制式正交多載波高速水聲通信技術研究
  5. A process that maps a record name to its physical location in the user work area ( uwa ) and notifies the dbcs ( database control system ) of the run unit ' s intention to use the database

    將記錄名映象到它在用戶工作區中的物理位置，並將運行單元使用數據庫的意向通知數據庫控制系統（ dbcs ）的過程。
  6. Underwater acoustic communications ( uwa ) are made difficult by the combined effect of multipath propagation and high temporal and spatial variability of the channel conditions. the fading which was caused by multipath propagation was one of the main factors influencing the performance of underwater acoustic communication systems

    水聲通道中廣泛存在的多徑傳播效應是水聲通信所面臨的主要障礙之一，由多徑所產生的信號衰落效應是影響水聲通信系統性能的主要因素之一。
  7. University of western australia uwa

    西澳大學
  8. Upon the request from some institutions that have the practical needs for uwa applications, the research is conducted to achieve the objective of developing a digital underwater acoustic voice communication system with longer working distance

    本研究是根據很重要的應用單位對更遠作用距離語音通信機的需要而選題的。
  9. These demand to develop a more reliable remote control system. based on the analysis of underwater acoustic ( uwa ) channel, this thesis designs an auto - replying lduwarc system by means of spread spectrum technique

    針對上述問題，本文在水聲通道分析的基礎上，設計了一種基於擴頻技術的自主應答式遠程聲遙控系統，系統著重考慮了系統的調制方式和自主應答的方式。
  10. Since sound is the only effective information carrier for medium or long distance wireless communication in sea water, underwater acoustic ( uwa ) communication plays an important role in national defense and in the development of marine economy

    由於聲波是目前海中實現中、遠距離無線通信唯一有效的信息載體，因此水聲通信對于國防的保障和海洋經濟的發展都有著極其深遠的意義。
  11. To attain reliable high data rate transmission over uwa channels, phase - coherent technology and adaptive equalization technology are selected as major research issue. the main content in this paper are as follows : 1. a11 kinds of linear and nonlinear adaptive equalization and typical arithmetic are studied elaborately

    本文以克服多途干擾這一主要矛盾，實現高數據率、高可靠性的水聲通信為出發點，以相位相干調制和自適應均衡等技術為主要研究內容，所做的工作主要如下幾個方面： 1
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