互擾調制 的英文怎麼說
中文拼音 [hùrǎodiàozhì]
互擾調制
英文
intermodulation-
Boeing wants to use existing wing and tail control surfaces that shift up and down about 20 degrees in a coordinated fashion to disrupt the vortical flow
波音公司則利用現成的機翼與機尾控制面，讓它們互相協調、上下移動20度，以擾亂渦流。Through analyzing in theory and proving in practice, this paper indicates that the module - control system have many merits : the develop cycle is short ; the application of room is sufficient ; the problem will be found easily in the process of debugging ; the capability of anti - jamming is strong ; maintain and check errors easily ; interchangeability is good ; upgrade is easy
通過理論分析和實踐證明，本文認為模塊化控制具有開發周期短、充分利用空間、在調試的時候容易發現問題、抗干擾能力強、容易維修和檢查錯誤、降低維修成本、互換性強、容易改進和升級等優點。The signal format of gps is analyzed, the principle models and mathematical models are established, the ber performance is analyzed in a channel interfered with wide - bandwidth awgn, narrow - bandwidth awgn, transmitted signal, single - tone signal respectively. based on the results above interference methods are discussed and simulated. then the performance of code acquisition and code trace of a digital gps receiver are discussed. the modem of linkl 1 and link4a are modeled and their ber performances are analyzed and simulated in channel s interfered with awgn, single - tone signal and multi - tone signal respectively
建立了jtids的收發終端的數學模型，分析它在噪聲干擾、相關干擾、互相關干擾下的誤碼性能，提出較佳的干擾方法和干擾碼型，並進行模擬模擬；分析了gps的信號格式，建立了gps的原理框圖模型、信號數學模型，並對其在寬帶噪聲干擾、窄帶噪聲干擾、轉發干擾、單頻干擾等情形下的誤碼性能進行了分析比較，提出相對較佳的干擾方法，並做了計算機模擬，針對一數字式gps接收機中擴頻碼捕獲與跟蹤環的特性進行分析；建立了link11和link4a數據鏈調制解調數學模型，對它們在噪聲干擾、單音干擾、多音干擾等下的誤碼性能進行分析，最後對干擾情況進行了模擬模擬。A big part of freshmans don t know how their device is modemed or even the frequency, they usually begin work as soon as they reach the site, interference sometimes caused ; in fact remote controlled flying models are very suitalbe for colony games, knowing each other s frequency can benefit the safety and friends making, why not do that
有很大部分的初學者不知道自己所使用設備的調制方式甚至頻率，到場就自己在一邊「埋頭苦幹」起來，往往由此引起干擾事故發生。其實遙控模型絕對是適合群體活動的休閑運動，難得有同好知己，到場就應相互點頭問候頻率，既可結交朋友又能確保安全，何樂而不為？In this paper, we derive predictive models of system and auxiliary system from double constant alterations respectively. the controller based on d - step ahead predictor can locate the closed loop poles at desired positions, whose parameters are adjusted by estimations of plant parameters that are separately estimated. an auxiliary estimator is developed to avoid ill - condition in solving diophantine equation. simulations show that these control systems have better dynamic responses under existence of measurable disturbance
引入雙恆等變換推導出系統及輔助系統的的d步預測模型，基於估計器的自校正控制器能將閉環極點配置在所希望的位置，它的參數是由與其相互獨立的對象參數調節.提出使用輔助估計器克服丟番方程的病態問題.模擬表明在存在可測干擾的情況下該系統具有良好的動態性能Abstract : in this paper, we derive predictive models of system and auxiliary system from double constant alterations respectively. the controller based on d - step ahead predictor can locate the closed loop poles at desired positions, whose parameters are adjusted by estimations of plant parameters that are separately estimated. an auxiliary estimator is developed to avoid ill - condition in solving diophantine equation. simulations show that these control systems have better dynamic responses under existence of measurable disturbance
文摘:引入雙恆等變換推導出系統及輔助系統的的d步預測模型，基於估計器的自校正控制器能將閉環極點配置在所希望的位置，它的參數是由與其相互獨立的對象參數調節.提出使用輔助估計器克服丟番方程的病態問題.模擬表明在存在可測干擾的情況下該系統具有良好的動態性能Based on observations, interviewing with original teachers, " self - designed music activities curriculum checklist " and " self - designed music learning behavior observation lists ", video analysis, research notes, etc, we found that all 15 students improved ( 1 ) students looked forward this music lesson. ( 2 ) interaction among students become more frequently. ( 3 ) students improved their pronunciation and oral communication skills. ( 4 ) music teaching activities made students more concentrated. ( 5 ) language communication and understanding were improved. ( 6 ) students become more self - confident in interpersonal interactions. ( 7 ) the eye control, coordination ability of the students were improved. ( 8 ) the emotion of emotional disturbances students become more stable
此研究結果也與研究者、五位協同研究教師在教學現場觀察的教學情境觀察記? 、教師訪談資? 、課程實施后?思札記結果相互呼應，包括（ 1 ） 15位國小特殊學生非常期待上音?課， （ 2 ）受試學生之間互動比?增加， （ 3 ）音?教學活動有?于其發音與口語表達， （ 4 ）音?教學活動幫助其上課?為專注， （ 5 ）在語言溝通方面，其能哼唱歌曲、有較多的口語表達，在語言理解方面，其更能聽從教師指令； （ 6 ）人際互動關系方面，其對自我較有信心，較願意參與教學活動；在團體音樂活動時，較願意在同儕面前表演； （ 7 ）在動作發展上，學生之視動控制、四肢協調能力有所增進， （ 8 ）情緒困擾學生的情緒更為穩定等。Secondly, we apply tk operator to the cross - correlation of received signal code and pn code to separate the multi - paths. it comes to a conclusion that tk operator can separate the multi - paths within less than the chip period accurately of spread - spectrum system with space - modulation by simulation. at last, we apply this algorithm to the practical signal collected by gps tap, and from the result we can drop a conclusion the tk algorithm is practical
本文首先闡述了時空調制擴頻信號原理以及在多徑干擾下時空調制接收機的性能和teager - kaiser接收機的原理;接著對時空調制擴頻系統的解調信號與偽碼的互相關函數採用tk接收機進行多徑分離，模擬結果表明， tk接收機對時延在一個碼片內的時空調制擴頻通信多徑信號有很好的分離效果;最後用數據採集器對一個gps信號進行接收和多徑的估計，驗證了該演算法在實際的運用中對多徑的擴頻信號有很好的分離效果。Vav system has the feature of multi - variable, intense conpling and nonlinear. when the several control loops in the control system are working together. there is intense coupling among them
變風量空調系統具有多變量、彼此耦合強烈、非線性等特點，其自動控制系統的多個控制迴路同時工作時，各個控制迴路之間具有強烈的耦合作用，相互影響，相互干擾。When ccc are used for spreading codes, multiple access interference ( mai ) is zero theoretically even under asynchronous transmission. if cc / ccc are used for spreading codes, one data symbol could be transmitted during one - chip duration
若採用互補碼作為擴頻碼，理論上而言，不管在同步模式還是異步模式下，都不存在多址干擾；又可用特殊的調制方式做到在1個碼片的時間內傳輸一個數據符號。分享友人