costas 中文意思是什麼

costas 解釋
科斯塔什
  1. The focus of this paper is the problem of frequency optimum codes of irrelevance processing. the method of researching optimum codes by using costas array method is given

    著重討論了非相干處理時的頻率最優編碼問題，給出了以costas陣列方式尋找最優編碼的方法。
  2. In the fourth chapter, firstly, the fsk / psk signal function is presented, then, the signal which frequency and phase are modulated by costas code and barker code for each are analyzed at the same time. after that, the target returns and clutter returns are analyzed and modeled. at last, both of the time correlation characteristics and space correlation characteristics are theoretically analyzed

    在第四章中，首先給出fsk / psk信號的表達式，並對一種分別採用costas碼和barker碼進行頻率和相位調制的fsk / psk信號進行分析，然後對fsk / psk信號的目標回波和雜亂回波進行分析與建模，接著，對雜波信號的時間相關性和空間相關性進行理論分析，由分析結果可知， fsk / psk雷達雜波的時間相關性不變、空間相關性增強。
  3. Former javelin world champion costas gatsioudis was the first runner to get the torch

    前世界標槍冠軍科斯塔?蓋茨歐迪斯承擔了今年奧運火炬接力的第一棒。
  4. In a tdma network, multiple users share the common medium ( or channel ) and bandwidth but different intervals of time. in case of the burst mode, the carrier of the modulated signal needs to be synchronized in a very short time. the common approaches such as a costas - loop and so on are no longer suitable any more

    在一個時分多址（ tdma ）通信網路中，多個用戶通過不同的時間段共享一個傳輸線路（或者通道）的帶寬資源，每個用戶只能在分配給自己的時間段內進行通信，這種突發方式信號的解調要求載波恢復要在很短的時間內完成，我們以往在連續信號解調器中採用的costas環等方法很難適應這種要求。
  5. Firstly, on the base of analyzing psk ' s theory and audio - card ' s constitute and data transfers, bdpsk and qdpsk soft - modulation and soft - demodulation systems based on audio - card are studied and implemented, including generating digital carrier sequence, synchronizing carrier, designing filter, sampling and judging, etc. the system adopts coherent demodulation method, synchronizing carrier adopts costas loop

    本文首先分析了調相信號調制解調的基本理論和多媒體計算機（ mpc ）聲卡組成原理及數據傳輸等方面的內容，然後研究並實現了基於計算機聲卡的bdpsk和qdpsk信號軟體調制解調系統，內容包括數字載波序列的產生、載波同步、濾波器設計，信號的抽樣判決等。
  6. As recently as two years ago, a forest fire came close to burning down the home of costas karamanlis

    兩年前，一場森林大火差點燒掉了科斯塔斯?卡拉曼利斯的家。
  7. Most postings on the site are from jilted lovers but there are also contributions aimed at greek taxi drivers, banks, the public sector and even prime minister costas karamanlis

    多數發貼者都是被戀人拋棄的人，也有一些發貼者詛咒出租車司機、銀行、公共服務部門，希臘總理科斯塔斯?卡拉曼利斯也成了網咒的「靶子」 。
  8. With prime minister costas karamanlis and most of his cabinet on the " hit list, " rumours abound that the ruling conservatives, whose popularity ratings have nosedived, may be forced to call early elections because of disgruntlement with their handling of the matter

    由於總理卡拉曼利斯和大部分內閣成員都在被竊聽者名單上，有傳聞說卡拉曼利斯政府的支持率已明顯下降，甚至可能導致被迫提前宣布大選。
  9. There are two uncertain factor about it : the phase of the pn code and the doppler - shift. after capturing the received signal successfully, the traditional ds receiver always uses a delay locked loop ( dll ) to synchronize the pn code and then uses a costas loop to realize the carrier synchronization. this complex closed - loop structure not only take long time to realize the synchronization, but also has the defect of “ hang up ”

    傳統的擴頻接收機通常在捕獲偽碼信號后利用遲早門鑒相的延時鎖定環來實現偽碼的精同步，解擴后利用科斯塔斯環實現載波同步，這種閉環結構不僅同步時間長、結構復雜，而且鎖相環還存在所謂的「 hang - up 」現象。
  10. Analysis and design of dsss signal digitalization costas loop

    直接序列擴頻信號數字科斯塔斯環的分析與設計
  11. The attempted search came as a senior prosecutor launched an investigation into whether costas kenteris and katerina thanou tried to avoid a doping test by staging the motorcycle accident

    搜查進行前，資深檢查人員已開始對肯特利斯和塔努的離奇摩托車車禍時間進行調查，他懷疑這兩名運動員是為了逃避藥檢而故意製造了這起車禍。
  12. The algorithm of cross product automatic frequency control ( cpafc ) and frequency bin technology is used for tracking larger frequency deviation. the paper gives out a scheme of digitized carrier synchronization loop, in which the digitized costas loop is used as a basic part while cpafc and frequency bin technology as auxiliary

    在此基礎上提出了數字化、軟體化的載波同步環路演算法方案，主要採用數字化科斯塔斯環的形式，並加以自動頻率跟蹤演算法和頻率開槽技術的輔助來實現載波同步。
  13. In this process, it is costas that transforms medium signal loaded with data information to baseband signal deprived of carrier

    其中，將帶有數據信息的中頻信號變為除去載波的基帶信號由科思塔斯環（ costas ）完成。
  14. " invert " phenomenon is inevitable when costas is used to make baseband recovery. differential modulation can avoid erroneous recovery in the receiver

    在用科思塔斯環作基帶恢復時會不可避免地出現「倒」現象，用差分調制可以避免在接收端發生錯誤的恢復。
  15. By comparing linear and digitized pll ’ s phase - transfer function, we obtained the relations between the two type pll ’ s parameters, thus gives out a scheme of digitized pll ’ s design. then the paper introduces the operating principle of the digitized costas loop used in spread spectrum communication systems

    通過模擬鎖相環與數字化鎖相環的相位傳遞函數之間的聯系，推導了模擬鎖相環與數字化鎖相環各參數之間的關系，得到了設計數字化鎖相環參數的方法。
  16. At last, it discusses the characteristic and theory of costas loop and its realization structure

    最後介紹了科斯塔斯環的特點、原理以及實現結構。
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