multipath error 中文意思是什麼
multipath error
解釋
多路徑反射誤差-
In the thesis, i introduce the theory and application of gps carrier phase measurement, analyze the errors in the observation of gps signal, study the ways to reduce these errors, specially for the error caused by multipath
論文介紹了gps載波相位測量技術的原理和應用，分析了gps觀測量的誤差，研究了減小和消除各種誤差的方法，重點是減小多徑效應的影響。 -
Most of error sources can be eliminated by double differencing due to the short antenna seperations within gps based attitude determination system, multipath is the dominant error source
Gps姿態測量中，大部分誤差源可通過雙差得到抑制或降低，多徑誤差成為主要的誤差源。 -
The multipath interference, resulted from interfering between the signals of the line of sight ( los ) and the line of ground reflection in vhf - rc, makes bit error rate of data transmission increased and system reliability attenuated
當前，中國水波中繼通道以直視路徑傳播為主，同時存在地面折射路徑對直射信號產生干涉，造成多徑干擾。這種干擾使得信號傳輸的誤碼率上升，系統可靠性下降。 -
In the radar elevation coordinate, the multipath effects are more severe, which cause periodic peak error in the target height measurement
在雷達俯仰角（目標高度）方向上多徑誤差的影響尤為嚴重，使得目標高度的測量誤差表現為周期性的尖峰誤差。 -
For greatly overcoming the carrier phase rotation resulting from multipath underwater acoustic channel and large mean square error ( mse ) at convergent end of linear equalizer ( le ) based on higher order statistics, statistical equalization criterion based blind linear sign decision feedback equalizer ( lsdfe ) was proposed
摘要為了克服多途水聲通道引起信號的相位旋轉及基於高階統計量的線性均衡器（ le ）收斂后均方誤差大的不足，提出了基於統計特性均衡準則的線性符號判決反饋盲均衡演算法。 -
This article sets forth the orientation theory of digital television and radio signals ' space position, speed, clock error and etc. and then analyses the error, troposphere delay, multipath and shelter domine effect, relying on the creation of hypodistance arithmatic model and the deduction of calculation formulae
摘要文章通過建立偽距數學模型，推導整理出計算公式，從而對數字電視廣播信號的空間位置、速度和時鐘偏差等參數的定位原理進行了闡述，最後對誤差、對流層延遲、多徑和遮擋效應等進行了分析。 -
This advantage is shown that in awgn and multipath channel, its estimation mean bias and estimation error square root is smaller than the sc method
這種優點體現在awgn和多徑通道中自適應分段相關時間同步法的估計均值偏差和錯誤方差均小於sc方法。 -
The coarse frequency error estimator has a wide estimation range and may be used for initial caption. and the fine estimator can achieve nice performance in multipath environment
該粗估計器有很大的估計范圍，可用於頻偏的捕獲；而精估計器在多徑環境下能得到很好的估計效果。 -
Distortion and gauss white noise distortion. the simulation of ideal system aims at absolutely clean channel, and the nonideal systems respectively set their channels as ricean channel ( multipath distortion channel ) and awgn ( gauss white noise distortion channel ). at the end of simulation, it use examining means of communication system as ber ( bit error rate ) analysis and eye diagrams analysis, then gives a summarize and a comment to the system
模擬中的系統結構、模塊和傳輸速率的選擇符合標準的dvb1規范en300744 ，理想系統的模擬是針對完全乾凈的通道，而非理想系統分別將通道設置為hcean通道哆徑干擾通道）和awgn （高斯白噪聲通道） ，模擬最後用通信系統的檢測手段進行誤碼率分析和眼圖分析，並對該系統作了總結和評價，加深對了dvb1系統的信號處理過程的理解，明確了目前面臨的問題。 -
Frequency - selective fading due to multipath propagation is a big obstacle in wireless communication. in the condition, the intersymbol interference ( isi ) comes into being and communication system appears error received symbol
多徑傳輸效應引起的頻率選擇性衰落是無線通信的一大障礙，使接收信號產生碼間干擾（ isi ） ，導致通信系統出現誤碼。 -
When the high rate data is transmitted through bandlimited channels in mobile communications, the intersymbol interference ( isi ) caused by channel distortion and multipath propagation will bring decoding error. it needs to adopt appropriate techniques to remove or reduce this kind of interference
當在帶限通道上傳輸高速數據時，會因為通道畸變和多徑效應產生的碼間干擾而產生誤碼，這就需要採用適當的技術來消除或減少這種干擾。 -
By way of analysis about the typical gps receiver tracking loops, the mathematical models of code multipath error and carrier phase multipath error are proposed in the dissertation ; by way of analysis about geometrical model of multipah signal, the mathematical model of differential path delay is proposed in the dissertation ; based on the above analysis, a improved carrier phase multipath mitigation algorithm using closely - spaced multiple antennas array is proposed, the result of computer simulation proves that the algorithm is feasible. the attitude parameters are often estimated using direct computation method. the relationship between the accuracy of attitude parameters and baseline length as well
本文從經典的gps接收機跟蹤環出發，分析了多徑效應對偽距觀測量、載波相位觀測量和snr的影響，提出了碼相位多徑誤差和載波相位多徑誤差的數學模型；通過對多徑效應的幾何模型分析，提出了多徑信號相對路徑延遲的數學模型；在此基礎之上，提出了一種改進的基於窄間距多天線陣列的載波相位多徑誤差抑制演算法，通過計算機模擬證明了該演算法的有效性。 -
In view of the error diffusion in ccc - cdma, the multipath diversity algorithm is put forwards. the simulations show that the multipath diversity gain attains as much as l0db
指出了基於完全互補碼擴頻的多載波寬帶cdma系統中存在的一些問題，以及今後的努力方向。 -
This system characterized with good anti - multipath performance and low complexities when the channel matrix extending technique or overlap - adding technique and minimum mean square error equalization are employed
當採用通道矩陣擴展技術或重疊相加技術，並採用最小均方誤差均衡時，該系統有著良好的抗多徑性能和較低的計算復雜度。 -
Analysis in theory and data processing show that the dgps positioning error comes from the effect of multipath mostly, and rtk positioning error comes from the effect of multipath and the receiver noise
理論分析和數據處理結果表明： dgps的定位誤差主要由多徑效應引起，而影響rtk定位誤差的主要因素包括接收機的測量噪聲和多徑效應。 -
Future wireless communication systems trend to provide multi - services to mobile users. cdma technique is adopted by the 3rd generation mobile communication systems due to its flexibility in supporting multi - services. how to keep qos of heterogeneous services and utilize the scarce radio spectrum resources is challenging for 3rd generation mobile communication systems in this thesis we developed a radio resource allocation framework for wireless code division access ( cdma ) networks that support multi - class traffic with different data rates and bit error rate requirements. we proposed a new resource allocation scheme using joint adaptive power control and mmse multiuser receiver in multipath fading system
為移動用戶提供多種業務服務是未來無線通信網路的主要發展方向。由於cdma技術具有靈活支持多種業務的優點，因而被第三代移動通信系統所采納。如何在惡劣的無線傳播環境里以及用戶運動且相互干擾的情況下為為各類業務提供qos保證，同時充分利用珍貴的無線頻譜資源，是基於cdma技術的第三代蜂窩通信系統必須致力解決的問題。 -
For ofdm communication systems in multipath environment, we introduce a symbol timing error estimation algorithm based on a new eqivalent system model. it works even in strong multipath environment and its computation cost is relatively small
針對ofdm同步問題構造了一種多徑環境下ofdm通信系統的簡化等效模型，並在此基礎上提出一種多徑通道下的ofdm定時偏差估計器。 -
Exploiting the cyclostationarity of ofdm signals in multipath environment, we further introduce an ofdm coarse frequency error estimator and an ofdm fine synchronizer
利用接收信號的循環平穩性，結合通道響應提出了一種ofdm頻偏粗估計器和一種ofdm定時偏差和頻偏精估計器。
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