proposed estimates 中文意思是什麼

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  1. By complementing the proposed scheme with methods to estimate the fractional code delay, the acquisition unit an provide high quality delay estimates such that it can instead of the delay locked loop in the traditional ds receiver. after dispreading successfully, this dissertation introduces a method to estimate the doppler - shift directly from some samples based maximum likelihood estimation, and then revise it forwardly

    在成功解擴之後，本文利用最大似然估計從l個樣點中直接估計出殘余多普勒頻偏，並進行前向頻偏校正，來代替傳統擴頻接收機中的科斯塔斯環，經模擬證明該方法的估計精度完全滿足解調的要求。
  2. Then, with the concept of accumulated failure probability, the proposed approach combines the least ? quares method with bayes " theorem, takes advantage of the parameter estimation for single weibull distribution to each derived subgroup data set, and estimates the parameters of each subpopulation. the estimates given by this paper also satisfy the maximum likelihood equation. the mean time to failure and the reliability estimation of the mixed population are given

    然後通過利用累積失效概率等概念，對每個導出的子組數據集聯合運用最小二乘法、貝葉斯定理和對單一威布爾分佈的參數估計法，從而得到每個子總體的滿足極大似然原理的參數估計，給出了該混合總體平均壽命和可靠度的估計。
  3. The motion compensation of radar target and an analysis of influence of component imperfection in the realization of the method are presented. to evaluate the performance of the proposed method. monte carlo simulation has been conducted to estimate the root mean square error of the angle estimates and the spatial resolution snr threshold in the cases of both non - fluctuating targets and fluctuating targets

    在此基礎上，提出了針對相位權重角度超分辨法的雷達目標的運動補償方法，分析了雷達系統各部件的不理想性對超分辨性能的影響，用montecarlo方法對無抖動目標和有抖動目標在不同信噪比下的方位估計誤差和方位超分辨的信噪比門限進行了模擬計算，並將結果同波束空間music方法及cramerrao限進行了比較。
  4. Based on the analysis of saturation throughput of dcf protocol, the relationship between the packet collision probability and the number of competing nodes is derived. a packet collision probability based estimation ( cpbe ) method is proposed, station or ap can estimates the packet collision probability according to several registe

    為此我們基於dcf協議飽和吞吐量的分析方法，推導了分組碰撞概率與同時競爭通道的節點數的關系，提出了一種簡便的估計競爭通道節點數的方法一一基於碰撞概率的估計方法（ cpbe ） 。
  5. An algorithm for matching the esprit ' s estimation of two - dimensional angle by using twice svd and once schur is proposed. using two row uniformity sensor - arrays and adding one sensor, the algorithm decomposes the array twice and exploits rotational invariance properties of signal space, so that both angles may be computed via matrix pencil method, and these estimates are automatically paired. simulation results are presented to verify the efficacy of the proposed algorithm

    首先針對esprit演算法對窄帶源進行二維doa估計存在測向冗餘的情況，提出了一種改進演算法，該演算法利用子陣信號數據矩陣中包含的信號空間的旋轉不變性質，藉助于矩陣束方法求解出信號的二維到達角，並且利用兩次奇異值及一次schur分解從而實現了esprit二維doa估計參量的自動配對； 2
  6. Last month, a japanese think - tank, the lunar and planetary society, proposed building a lunar base by 2024 at a cost of 30 billion dollars ? a tenth of previous estimates

    上個月，日本的智囊團，太空研究社，提議在2024年前花300億美元（此前估計值的十分之一）在月球上建立一個研究基地。
  7. ( 4 ) three multistatic sonar localization algorithm based on range information are proposed. firstly, the tol algorithm is given. the formulas are provided for both the position and the variance of the position estimates

    首先，將tol （ time一only一locallzation ）演算法擴展到多基地聲吶定位中，給出多基地tol演算法的原理，並對不同站址布局下，系統的誤差分佈特點進行了研究，給出了最優的站址布局方案。
  8. In chapter 3, we discuss the problem of doa estimation in the presence of spatially nonstationary noise fields. an estimate of the colored noise covariance matrix is firstly given. the received data for parameter estimation is then prewhitened using the estimated noise covariance, hence, overcoming the highly biased estimates. finally, adaptive beamforming with the modified weight is also performed. computer simulations show that the proposed method can completely remedy beam distortion. 3

    在第三章討論了一種在環境噪聲為白噪聲而陣元噪聲為空間非平穩情況下的doa估計問題，給出了一種有效的估計陣元噪聲功率的方法，進而利用估計的噪聲協方差矩陣進行預處理而實現色噪聲環境下的doa估計，理論分析和模擬結果均表明了本章提出的方法的有效性。
  9. Then a dynarnic location algorithm is proposed, which firstly estimates the distance between ms and serving bs through an initial ms position estdriation, then chooses toa measurements, and finally determines the weighted factors of wls algorithm, thus resulting an improved location performance

    提出了一種動態定位演算法，該演算法通過對ms第一次初始位置估計來確定ms與服務bs的距離，再選擇參與定位的toa測量值，確定wls演算法中的加權因子，從而改進了定位性能。
  10. 5. a adaptive multimedia synchronization control mechanism based on the leak - bucket algorithm is proposed. it estimates the range of delay according to the practical network load by making use of the time - stamp of the medium units, and adjusts dynamically

    提出了基於漏桶演算法的自適應多媒體同步控制方案，該方案利用媒體單元的時間戳，對延時及延時抖動進行動態估計，及時了解網路負載的變動情況。
  11. However, two - stage estimates of regression coefficients corresponding to these two estimates have approximate equal mean square error. for testing linear hypothesis about regression coefficients, banerjee and magnus ( 1997 ) studied the sensitivity of f - test sta, tistic ( fgls ( ) ) based on generalized least square estimate caused by variance parameter in general case and proposed sensitivity statistic and its distribution

    關于回歸系數的線性假設檢驗問題， banerjee和magnus （ 1997 ）在一般情況下從理論上研究了方差參數對基於廣義最小二乘估計的f -檢驗統計量（ f _ （ gls ） （ ） ）的種種影響，提出了敏感性的概念，並給出敏感統計量的形式及其分佈。
  12. Using the regularized greens functions and a duality argument, it is proved that the mixed finite element method proposed in this paper possesses the superconvergence by almost one order maximum norm estimates for the l2 projection of the function and quasi - optimal maximum norm estimates for the associated vector function for a strongly nonlinear second order elliptic problem

    本文利用正規格林函數及對偶論證技術證明了一類強非線性二階橢圓問題混合元方法對函數的l2投影具有幾乎超收斂一階的最大模誤差估計，對伴隨向量函數具有擬最優最大模誤差估計
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