gaussian error 中文意思是什麼
gaussian error
解釋
船磁-
As a result, in the paper, considering the altitudinal effect ( topography factor ) and the influence on the temperature lapse rate by topography and latitude and longitude and moisture transfer, the study on the daily surface air mean, max and min temperature in the reaches of yangtze rive is attempted by five models, which include the gaussian weighted model, the gaussian weighted model associated with the error - modification, the gradient plus inverse distance squared model and the modified gaussian weighted model a and b that take topography - factor into account
本文考慮海拔高度和溫度直減率受地形和經、緯度及水汽等因素的影響，通過利用高斯權重法、結合逐步訂正的高斯權重法、梯度距離權重反比法和加入地形影響項（地形因子）的兩種改進高斯權重法的方案a 、 b ，對長江流域的地面日平均、最高和最低氣溫場進行了空間化插值研究。 -
Turbo codes represent the new code structures, which consist of pccc ( parallel serially convolutional code ) and sccc ( serially concatenated convolutional code ). in this paper, the background of turbo codes are firstly introduced, which includes the base principle of error correction code 、 block code and convolutional code ; the principle of turbo code and the iterative decoding is secondly expanded ; the key decoding algorithm : a revised map algorithm and iterative decoding theory are detailed ; then, a new turbo code structure : hccc ( hybrid concatenated convolutional code ) is presented, and the capacity of this code method is analyzed, the average capacity upper bound is derived ; at last, this code is simulated on awgn ( additive white gaussian noise ) channel and rayleigh fading channel
本文首先介紹了turbo碼的背景知識，包括差錯控制的基本原理、分組碼和卷積碼；然後闡述了turbo碼的基本原理，包括turbo編譯碼器結構及迭代譯碼原理；較為詳細地描述了關鍵的譯碼演算法： ?種改進的最大后驗概率（ map ）譯碼演算法及迭代譯碼演算法；提出了一種新的turbo碼結構：混合turbo碼（混合級聯卷積碼） ；並用編碼性能聯合界分析方法對混合turbo碼進行了性能分析，得出了其平均性能上界；並在高斯白噪聲通道和瑞利衰落通道上分別作了一些應用研究及計算機模擬實驗。 -
On the basis of sga, the validity of improved gaussian approximation ( iga ) method is established in our systems and the accuracy of the bit error rate expression obtained via siga is demonstrated with monte - carlo simulations
在此基礎上證明改進型高斯近似法（ improvedgassianapproximation ，簡稱iga ）在本文所述系統中的適用性，並利用其簡化演算法（ simplifiediga ，簡稱siga ）得到簡潔的誤碼率近似表達式。 -
During the course of the research, the criterions of the interpolation effect are mean error ( me ), mean absolute error ( mae ), root mean squared interpolation error ( rmse ) and the difference of mean square deviation between the measured and the estimated surface air temperature. the conclusions are as follows : ( 1 ) by contrasting the gaussian weighted model associated with the error modification with the gaussian weighted model, the error modification is proved to considerably ameliorate the precision of spatial interpolation ; ( 2 ) on the base of the gaussian weighted model, taking altitudinal effect into account can reflect the trend in which temperature changes according to the topographic altitude and may ameliorate the precision of spatial interpolation correspondingly and apparently, which indicates that topographical effect on the preciseness of spatial interpolation can not be disregarded in terms of the region with complicated topography ; ( 3 ) the map of daily surface air temperature distribution, using the modified gaussian weighted model a and b, can accurately reflect the temperature - changing - with - topographical - altitude trend. among them, the better is the model a, whose me is below 0. 03 ?
在此過程中，採用平均誤差（ me ） ，平均絕對誤差（ mae ） ，插值平均誤差平方的平方根（ rootmeansquaredinterpolationerror ，簡稱rmsie ） ，插值前後測站要素值的均方差（ meansquaredeviation ，簡稱msd ）差值作為判定插值效果的標準，得出如下結論：通過高斯權重法與結合逐步訂正的高斯權重法的對比，說明結合逐步訂正方案的高斯權重法可大大提高地面日氣溫的插值精度；在高斯權重法中加入海拔影響項可以反映出溫度隨地形高度的變化趨勢，同時也能較大地提高地面日氣溫的空間插值精度，說明在地形復雜的區域，地形影響在插值精度中是不可忽略的；對于高斯權重法的兩種改進方案得到的地面日氣溫分布圖都能很好地反映出表面大氣氣溫隨地形高度的變化趨勢。 -
In this paper, bit - error rate performance analyses are presented for coded and un - coded frequency hopping m - ary frequency - shift keyed systems under the condition of additive white gaussian noise ( awgn ) and partial band noise jamming and multitone jamming. the use of error - correct codes provide a way to improve the performance of frequency hopping system, particularly the use of reed - solomon code in a fh system under the condition of partial band noise jamming can greatly improve the performance of system. so we provide the way of coding and decoding of rs code in c language. in the end, we offer the simulation of the performance of time diversity fh / 2fsk system over partial band jamming noise channels
第一章為緒論，敘述跳頻通信的發展趨勢，以及基本概念，第二章及第三章介紹提高抗部分頻帶干擾的前向糾錯碼reed - solomon碼的原理和實現方法。第四章研究跳頻通信系統在各種干擾條件下的性能。最後在第五章以fh mfsk系統為例，探討在部分頻帶干擾下的系統性能，並進行計算機模擬，模擬結果表明採用分集技術和各種編碼技術對于系統的性能改善具有明顯的效果。 -
The experiment on handwritten english letter recognition in ?. 1 shows that the error rate of t - ppca is significantly smaller than that of gaussian - ppca ( see table 5. 1 )
1的手寫英文字母識別的實驗中，結果表明t - ppca的錯誤率大大小於使用gaussian - ppca的錯誤率（見表5 1 ） 。 -
Specially we discuss and analyze the theory of linear quadratic gaussian control and the theory of implementing the stability of a uncertain time - delay system which include in the theory of robust control, and deduces some theories in detail, and gets the using method of the two theories in the actual systems. in this paper we first discuss and analyze the uncertainty of the macroeconomic system by the theory of linear quadratic gaussian control, and try to avoid the effect of the modeling error in system and the disturbed signal from the system and outside
本文主要研究了處于控制理論中的魯棒控制理論，其中重點研究與分析了線性二次型高斯控制理論和時滯不確定系統的魯棒穩定理論，對其進行了一定的理論推導，並得出了這兩種控制理論在實際系統中的運用方法。本文首先運用線性二次型高斯控制理論對宏觀經濟系統進行了分析和控制，力求消除或減少系統中的模型化誤差及其本身和外部的擾動信號等不確定性的影響，並藉助matlab設計軟體進行模擬，以得出最佳控制策略。 -
This paper aims at the uncertainty of the macroeconomic systems and atmospheric pollution system which is analyzed and controlled by the theory of linear quadratic gaussian control and the theory of h control, and avoids the effect of the modeling error in systems and the disturbed signal from the system and outside
本文針對宏觀經濟系統和大氣污染控制系統模型的不確定性，分別運用線性二次型高斯控制理論和h _ 。控制理論進行宏觀經濟系統和大氣污染系統的的分析與控制，消除系統中的模型化誤差及其本身和外部的擾動信號等不確定性的影響，藉助matlab設計軟體進行模擬，得出最佳控制策略。 -
Based on the obtained lower bounds on mean squared channel estimation errors, the limits on bit error rate ( ber ) for maximal ratio combining ( mrc ) with gaussian distributed weighting errors on independent and identically distributed ( i. i. d ) fading channels are presented
通過對不同衰落通道多普勒譜的積分，求出了相應的通道估計均方誤差下界的閉合表達式，並在此基礎上得到了分集系統在獨立同分佈的衰落通道中採用最大比合併時的誤碼率下界。 -
The main contents are as follows : 1. review the theory and application of sequential monte carlo method, and discusse the filtering error counteraction problem by a nonlinear and non - gaussian filtering example. 2
主要內容包括: 1 .充分回顧了貫序蒙特卡羅方法的主要理論背景與應用現狀，通過對一個非線性非高斯濾波算例的研究，討論了濾波誤差抵消問題。 -
At the same time, analysis of effects of gaussian distributed and uniform distributed feedback error of the channel fading behavior on throughput performance of adaptive mqam reveals that the obvious throughput loss shall be observed as far as the error exceeds certain limit
同時，高斯分佈和均勻分佈的通道衰落信息反饋誤差對自適應mqam吞吐量性能影響的研究表明，當誤差超過一定程度時，自適應系統吞吐量性能明顯下降。
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