short wave receiver 中文意思是什麼
short wave receiver
解釋
短波接收機-
This article develops a research on the underwater acoutics position technology with the short array - group and designs hardware of this system based on application background, which includes the receiver, controlling sub system and interface sub system and the wave ( data ) collecting sub system
本論文對短基線水聲定位技術進行了研究並設計了基於工程應用背景下的硬體電路系統。主要包括：接收機分系統、控制及介面分機分系統和波形（數據）採集分系統。 -
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。 -
The underwater - radio buoy for use as obtaining the ocean " s acoustical parameters is a underwater acoustic signals record system which has long distance radio remote control and data transmit function. the technology key of the dissertation study is that under the requirements of the system the monitor and record equipment on the acoustic source vessel, the monitor and record equipment on control vessel command and control the work slate of the buoy system by radio data transmitting mode of short wave transmitter - receiver
海洋環境參數獲取浮標監測系統屬于具有長距離無線電遙控?數傳功能的水下聲信號接收記錄系統，本論文研究目標的技術關鍵在於根據系統要求，指揮船和發射船監控記錄設備通過短波電臺以無線數傳方式，對浮標系統的工作狀態進行指揮和控制，浮標則通過同一短波通道向指揮船上報浮標方位、工作狀態、關鍵數據及非常狀態下的報警信號等。 -
On the base of the traditional bpm - i, ii time receiver, and by the deeply studied of the theory of software radio ( swr ) and time receiver, we present the short - wave time receiver design on the concept of software radio
本文建立在傳統的短波定時接收儀的基礎上，通過對授時接收機和軟體無線電理論的深入研究，提出了一種新的軟體無線電概念下的短波定時接收機的實現方案。 -
By contraries, traditional radio use diverse hardware set for each types of signal ' s demodulation, which is too complicated. the thesis describes a solution for software short - wave receiver
而在傳統接收機中這部分是用模擬硬體實現的，對每一種信號的解調都需要單獨的硬體來完成，硬體復雜度過高。 -
The subject comes from the cooperation project “ long distance navigation short - wave receiver ” between chengdu sine science & technology ltd. and automatization school of harbin engineering university. the auther was responsible for implementation of the rf receiver of the system. the rf receiver consists of a rf front end, 3 dds synthesizer
本項目來源於電子科技大學成都賽英科技有限公司與哈爾濱工程大學自動化學院的合作項目「遠距離導航短波接收機」 ，筆者負責其中接收機射頻部分的研製，該射頻接收機包括一個射頻前端和3個dds頻率合成器。 -
This thesis adopts 8psk / qpsk modulation mode that ' s widely applied in short - wave communication to research all - digital blind receiver in burst mode based on software radio technology. then related solutions are given for the doppler frequency shift problem and multiple fading problem in short - wave channels. the arrangement of the thesis is below : chapter 1 gives brief description for the new technology and new systems of short - wave communication and for the development and appliance of software radio
本文採用短波通信中應用廣泛的8psk qpsk調制方式，研究基於軟體無線電技術的突發模式全數字盲接收機，並對多音并行及慢速傳輸中存在的多譜勒大頻偏問題、單音串列、高速數傳時在短波通信鏈路中發生的干涉衰落問題做了研究，提出了相應的解決方案。 -
Chapter 2 introduces the key technology for all - digital receivers. chapter 3 gives a synchronization scheme for burst mode qpsk based on dpll using a certain preamble first, then a short - wave burst - mode 8psk all - digital blind receiver is proposed., all of the scheme is demonstrated in detail.,
全文結構安排如下：第一章為序論部分，介紹了當前短波通信中的新技術和新體制以及軟體無線電臺的概念、發展趨勢和相關應用；第二章介紹全數字接收機中的關鍵技術。
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