鄰對位定位基 的英文怎麼說
中文拼音 [līnduìwèidìngwèijī]
鄰對位定位基
英文
ortho-para directing group-
The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail
首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。The ray - intersection method is used to determine the nesting level of contours in the same layer, and the contours match relationship between two adjacent layers is established according to contours geometry comparability and relative position fixity
使用射線法確定同層輪廓間的關系，並在此基礎上，提出根據相鄰層輪廓間的幾何相似性和相對位置不變性等特徵，確定相鄰層輪廓之間匹配關系。An algorithm for detecting moving ir point target in complex background is proposed, which is based on the reverse phase feature of neighborhood ( rpfn ) of target in difference between neighbor frame images that two positions of the target in the difference image are near and the gray values of them are close to in absolute value but with inverse sign. firstly, pairs of points with rpfn are detected in the difference image between neighbor frame images, with which a virtual vector graph is made, and then the moving point target can be detected by the vectors ' sequence cumulated in vector graphs. in addition, a theorem for the convergence of detection of target contrail by this algorithm is given and proved so as to afford a solid guarantee for practical applications of the algorithm proposed in this paper. finally, some simulation results with 1000 frames from 10 typical images in complex background show that moving point targets with snr not lower than 1. 5 can be detected effectively
基於運動點目標在鄰幀差分圖像中所具有的近鄰反相特徵，即運動點目標的兩個位置相鄰近、灰度值一正一負，提出一種在復雜背景下，基於紅外序列圖像的運動點目標檢測演算法.本演算法利用該特徵在鄰幀差分圖像中檢測反相點對，進而構造反相點對矢量圖，最後依據累積反相點對矢量圖中多矢量首位相接的連續性檢測出運動的點目標.文中給出並證明應用本演算法能以概率1檢測到運動點目標的收斂性定理.對典型復雜背景下10幅1000幀圖像的模擬結果表明，當信噪比大於或等於1 . 5時，可以有效檢測出運動點目標Firstly, this essay analyzes the external market environment and its internal resource to find out the relevant opportunity and challenge, as well as the advantages and inferior positions ( i. e., swot analysis matrix ) ; then analyzes the expansion strategy and market orientation, and the marketing strategy of chengdu fairly chain store co., ltd. ; finally, based on above analysis, try to find out the reason of failure of expansion strategy
正是在這樣的背景下，筆者選擇了成都芳鄰百貨超市有限責任公司作為研究課題，本案例先對公司外部市場環境和公司內部資源進行分析，羅列出來自外部環境的機會和威脅及基於公司內部資源形成的優勢和劣勢（ swot分析矩陣） ，然後對公司擴張戰略、市場定位戰略、營銷戰略等進行了分析，以求對芳鄰公司擴張的失敗尋求戰略上的原因。Considering the difference in application scale, we designed a proximity based mobile beacon assisted localization algorithm ( pmaloc ) for the application of small scale, and designed a distance - in - hops based mobile beacon assisted localization algorithm ( hmaloc ) for the application of large scale
演算法設計時考慮到應用規模的不同:針對小規模應用，設計了基於鄰近關系的移動錨節點輔助定位演算法（ pmaloc ） ;針對大規模應用，設計了基於跳計數的移動錨節點輔助定位演算法（ hmaloc ） 。The pearl river delta has the special location superiority for having trade relations because of abutting hong kong and macao. through years of development, the pearl river delta has formed the bran - new opening structure. it is a good base to enhance the economic globalization degree
珠江三角洲毗鄰港澳，具有對外通商的特殊區位優勢，通過多年的發展，形成了全新的對外開放格局，為經濟全球化程度的提高奠定了良好的基礎。Abstract : based on the rule of the insert arrangement in equal running condition, the effect of the button inserts in the vicinity on rock fragmentation is explored, and the optimum insert spacing, best insert position and proper insert numbers are determined
文摘:在等工作條件布齒理論的基礎上，從球齒碎巖機理出發，探討了相鄰球齒對碎巖效果的影響，從而確定了最優齒間距，並確定最佳齒位和合理的齒數。Firstly, the analyses on the dynamical response of the tsing ma bridge ( tmb ) under traffic loading are performed on the basis of the three dimensional finite element model of the full - scale structure of the bridge, and some regions critical to fatigue damage are determined from the result of the dynamical response. the hot spot stress approach is usually adopted in the fatigue design and analysis of tubular welded joints. to apply the hot spot stress approach for the fatigue evaluation of long - span suspension bridges, the fem is further used to determine the hot spot stress of the critical fatigue locations
首先，在青馬大橋三維有限元模型和整體動力響應分析計算的基礎上進一步進行關鍵疲勞構件的局部熱點應力分析，對疲勞危險部位處的焊接構件建立三維有限元模型，施加符合橋梁實際工況的載荷與位移邊界條件，進行局部熱點應力分析，確定這些焊接構件內的名義應力和相鄰焊接區域內熱點應力之間的關系，得到相應的應力集中系數。Based on above performances the applications of multi - sensor data fusion in state estimation for maneuvering target is studied systemically. the main work includes : based on the analysis that the extreme value of acceleration presupposed causes influence in the “ current ” statistical model, a modified model is given, which utilizes the functional relationship between maneuvering status and estimation of the neighboring intersample position vector to carry out the self - adaptive of the process noise variance. then combining with the recursive characteristic of kalman filter, an improved self - adaptive filtering algorithm is presented
基於此，本文針對多傳感器數據融合技術在機動目標狀態估計中的應用進行了系統的研究，其主要工作如下: 1 、基於「當前」統計模型中加速度極限值的預先設定對于濾波效果影響的分析，利用目標機動狀況與相鄰采樣時刻間位置估計量變化之間的函數關系實現噪聲方差自適應，進而提出了一種修正的模型，並結合卡爾曼濾波遞推演算法，提出了一種改進的自適應濾波演算法。分享友人