測向天線系統 的英文怎麼說
中文拼音 [cèxiàngtiānxiànxìtǒng]
測向天線系統
英文
df antenna system- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 線 : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
- 系 : 系動詞(打結; 扣) tie; fasten; do up; button up
- 統 : Ⅰ名詞1 (事物間連續的關系) interconnected system 2 (衣服等的筒狀部分) any tube shaped part of ...
- 系統 : 1. (按一定關系組成的同類事物) system 2. (有條理的;有系統的) systematic
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That the antenna points at the aerocraft very precisely can utilize the gain of antenna, minishing the power of transmitter, and propagating data very gualitily effectly
在無線測控系統中,天線精確指向飛行目標,可最佳利用天線增益,減小發射功率,高質量的進行控制和數據傳輸。A radio receiver and directional antenna used as a system to determine the angular direction of incoming radio signals
無線方向探測器一種無線電接收和指向天線系統,用來確定收到的無線電信號的角方向High accuracy can be obtained in direction finding system where the angle of incidence is determined by the phase information of the incident wave, but the mutual coupling between antennae will effect the performance of the system
利用相位信息確定來波入射角能達到較高的精度,但測向天線之間的互耦對系統性能的影響很大。Abstract : high accuracy can be obtained in direction finding system where the angle of incidence is determined by the phase information of the incident wave, but the mutual coupling between antennae will effect the performance of the system
文摘:利用相位信息確定來波入射角能達到較高的精度,但測向天線之間的互耦對系統性能的影響很大。This paper is worked to solve the phase center of the directional antenna, accordingly to giving some references for the interception and direction - finding system
本文是為了解決定向天線的相位中心問題,為偵測合一系統設計提供參考而展開研究的。In the interception and direction - finding system, the phase center of the antenna is very important to the direction - finding, however, the phase center of directional antenna is few studied in the home and overseas
在偵測合一系統中,天線系統的相位中心對于系統測向有著至關重要的作用,但是目前國內外對于定向天線的相位中心研究的非常少。Methods of measurement for equipment used in terrestrial radio - relay systems - part 2 : measurements for sub - systems - section two : measurements in the antennas and passive repeaters
地面無線電接力系統所用設備的測量方法第2部分:分系統的測量第2節:天線和無源轉向器的測量By analysis of the intermediate frequency signals which through eight antennae and receiver channels, eight channels radio spatial spectrum direction finding system can reach the purpose of finding radio direction
八通道無線電空間譜測向系統通過分析經過八路天線和接收機通道以後的中頻信號達到確定無線電信號方向的目的。Secondly, on the basis of the discrete data and smooth feature of the surface of the radome, the inner surface is reconstructed by the bicubic uniform b - spline surface approximating means with least square method. finally, a tool - path planning method is presented, which is a combination of the constant scallop - height method with the isoparametric method
在分析目前最為成熟的結構化和面向對象軟體工程方法的基礎上,應用結構化和面向對象方法相結合的思想,實現了天線罩測量和磨削的軟體系統的分析、設計和開發。This paper studies a data experiment and identification problem of an actual system, in which the steering gear and the satellite - satellite pointing / tracking system act as the study object, based on system identification technique. the main factors that influence identification results and problems that should be paid attention to are analyzed. base on the analysis, auto - regressive moving average with exogenous input model ( armax ) for steering gear and a three - layer predictive control neural network model are established
從理論的角度研究了對於一個實際系統的數據實驗設計和模型辨識問題,分析了影響系統辨識結果的主要因素以及在辨識過程中應注意的問題,並以此為依據,建立了舵機的滑動平均模型和星星天線指向控制系統的三層預測控制神經網路模型。The several ones that have more lager sensitivity to embankment settlement are found out. then, aimed at the traditional three - layer bp network ' s shortages : easily getting into local minimum value and slow convergence, the modification combined momentum method with self - adaptation study velocity is made, and one improved bp network is put forward. finally, according to the results from above sensitivity analyses, the nonlinear model main parameters of each natural layer in roadbed are approximately rectified using the improved bp network technology founded on its stronger nonlinear mapping capacity and the settlement measurements
採用非線性有限元程序,對鄧肯-張模型中8個參數與路堤沉降的關系進行了詳細分析,找到了影響沉降的主要參數;接著,針對傳統的三層bp網路具有收斂速度慢、易陷入局部極小點等不足,對其進行了修正,提出了改進的bp神經網路模型;最後,根據上述靈敏度分析結果,基於改進的bp網路模型較強的非線性映射能力和前期沉降實測資料,對路基中各天然土層的非線性模型主要參數進行了反分析修正; ( 4 )路堤沉降計算一維法中考慮應力歷史、側向變形的研究。Sthe azimuth resolution characteristics for different deployments of the antennae ’ irradiation mode is discussed clearly through analyzing the doppler history of the echoed signal based on the platforms " motion features and antennae " irradiation rules
根據收、發載機平臺的運動特點和天線波束在觀測場景平面內的照射規律,本文採用多普勒頻率分析的方法詳細討論了發射、接收天線採用不同照射配置方式時系統的方位向分辨特性。For power control of listening users, forward power control method are introduced based on full, multichannel, filtered report, and collision method etc. the full report method has redundancy report information, and its real - time performance is bad, multichannel report is introduced to improve the real - time performance, and filtered report is introduced to eliminate the redundancy information, finally the collision method introduced can not only get higher real - time performance but also diminish the redundancy information ; 2. in order to meet the requirements of making the dynamic simulation of trunking group system, the ms ’ s random move equation is brought forward, the simulation of ms ’ s distribution is done and the integrated channel model are presented ; 3. the smart predicative model of power control is introduced to overcome the delay and track the change of the complicated network, with this model, the power control ‘ s performance is greatly improved
全匯報方法存在冗餘的匯報信息,而且實時性較差,為了改善實時性提出了多通道的匯報方式,為了改善冗餘匯報而提出了篩選法,最後介紹的碰撞法在減少冗餘信息的同時又提高了實時性;二、為了集群功率控制動態模擬的需要,提出了移動臺的隨機運動方程,進行了有關移動臺的分佈模擬,建立了綜合的通道模型;三、希望克服延時和跟蹤復雜網路環境變化,提出了功率控制的智能預測模型,通過智能預測模型可以改善功率控制的性能,著重介紹了採用神經網路的方法實現智能預測的通用模型,從而跟蹤復雜多變的無線環境,諸如慢衰落及快衰落(包括多徑衰落、多普勒效應所引起的衰落)等網路特徵,達到預測功率需求;四、採用二級正交碼和智能天線(空分多址)的方法進行組內用戶的識別,改進功率控制效果;五、話權用戶的前向和反向功率控制方法;六、對引入gota的cdma系統提出了復合容量表示方法,並作容量分析,探討有關gota系統的qos問題。In order to predict source location by using the svm regression, we combine the svm theory & the antenna array module, construct a training data structure ; design a new system module which optimize the train machine by altering different parameter
為了利用支持向量機的函數擬合來預測信源位置,我們將支持向量機理論和陣列天線模型結合在一起,根據兩者的不同特點構造了一個訓練數據結構;並設計了通過改變不同參數對訓練機器進行優化的新的系統模型。分享友人