zero track 中文意思是什麼
zero track
解釋
零磁軌-
The following algorithms have been proposed and tested in the thesis : 1 frequency selective fading : combine the isomorphism between the input space and the output space and propose a new approach to blind equalization of the channel. compared with conventional methods, the new approach offers lower computational complexity, better performance, and more robust against the over - determination of the system order ; 2 time selective fading : a new approach to the equalization of time selective channel based on the zero - forced equalizer is proposed which is more simple in its structure of algorithm ; 3 time - varying channel : using the instantaneous mean value changes of the output signal to extract the information of channel variations and model it using ar model, kalman filter is then employed to track channel variations, it bears faster ability in tracking the variation of tv channels ; based on the isomorphism between the inputs and the outputs and some of the approaches using in mimo system, a new algorithm of equalization of simo time - varying channel is proposed, which also share the merits of being robust against the over - determination of the system order ; model the time - varying channel using the multi - resolution decomposition wavelets, and then a blind identification method based " on the model is proposed ; at last, a new model for equalization and identification of mimo system is proposed
主要工作在以下幾個方面： 1 、針對頻率選擇性衰落通道：結合輸入輸出空間同構關系提出一種新的頻率選擇性通道均衡方法，與傳統方法相比，該方法計算量更小，收斂速度更快，性能更優，且對系統階次的過確定表現穩健，具有實際均衡應用價值； 2 、針對時間選擇性衰落通道：提出一種基於迫零均衡的時間選擇性通道均衡方法，演算法結構簡單； 3 、針對時變色散通道：利用瞬態均值曲線提取通道時變信息，對之ar建模，利用卡爾曼濾波器跟蹤時變通道抽頭變化，可以快速跟蹤通道變化；基於輸入輸出空間之間的同構關系以及多輸入多輸出系統的處理方法，提出了新的單輸入多輸出色散時變通道均衡與識別演算法，同樣具有對通道階次過確定保持穩健的優點；結合小波多解析度分析提出一種基於小波模型的通道盲識別演算法；研究時變的多輸入多輸出系統的盲均衡與盲反卷積問題，給出一種時變系統處理模型。 -
On 9 track nonreturn to zero recorded magnetic tape for digital data storage, density 8 rpmm 200rpi
數字數據存儲用9磁軌的不歸零制記錄磁帶.位密度8位 -
Within a given time a train travels from one station to the next along level track or non - zero gradient track, it is desirable to find a feasible control strategy that minimizes fuel consumption
列車沿水平或坡度軌道從一站駛向下一站，要求在給定的時間內完成行程並使得能耗最小。 -
When the self - adaptive procedure is combined with the genetic algorithm ( ga ), a complete algorithm of adjusting parameters and implementing calculation is formed. this algorithm is suitable for both level track and non - zero gradient track
同時我們將上述自適應的計算過程與現代優化方法?遺傳演算法相結合，得到列車控制問題的參數調整與計算的完整的演算法，該演算法既適合水平軌道又適合帶有坡度的軌道。 -
It should be pointed out that the constructive algorithm does not depend on the nature of the strategy determined by parameters, and that the constructive algorithm is also suitable for both level track and non - zero gradient track theoretically
本文還給出一種基於迭代序列的構造性演算法，該演算法調用了基本計算過程但不需要確定參數對入和。所對應的運行方案的本質，從理論上來說它也是既適合水平軌道又適合帶有坡度軌道的。 -
In this paper, we developed a new kind of interface capturing method which use the level set equation to keep track of the interface location as the zero level and use the ghost fluid method to propagate the contact interface disturbed by r - m instability or r - t instability
由於該類方法是以數學方程的物理解的性質為基礎，通過設置一個距離函數（ levelset函數）來標志界面所在的位置，從而能夠夠精確地捕捉到界面的發展，而不會出現非物理解的現象。
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