例句與造句

1. When the radar is narrow band , radar target is studies as a point target . target and clutter are modeled as having a zero - mean complex gaussian probability density function ( pdf ) . target is assumed as slowly - fluctuant
   窄帶條件下,雷達目標可以看作是一個點目標,假設目標和雜波都服從零均值的復高斯分布,目標為慢起伏。
2. All numerical experiments are passed the statistically confidential test second , on the basis of the retrieved data of soil water content and land surface temperature , the probability density functions ( pdf ) of them fitted
   其次，利用反演的土壤水分和地表溫度資料，擬合了土壤濕度和地表溫度空間分布的概率分布密度函數( pdf ) ，并將擬合結果與反演值進行了統(tǒng)計檢驗。
3. The cumulative probability distribution ( cpd ) and probability density function ( pdf ) of the magnitude of signals with noise are approximated by the cumulate percentage distribution ( cpd ) and percentage density ( pcd ) respectively by sorting and discretizing . the simulation verfies the following
   含噪訊號強度之累積機率分布及機率密度特性，則依強度遞增排序法，換算成累積百分比分布及百分比密度近似之。
4. Kde is a non - parametric method which is capable of extracting the population ' s probability density function ( pdf ) based on data sample only without any a prior knowledge about the statistic properties of the data regime . in this thesis , it is conducted the implementation of the kde for monitoring the performance of batch production processes
   用核函數法概率密度估計對間歇生產過程進行實時狀態(tài)監(jiān)測的主要優(yōu)點是它屬于非參數法概率密度估計的一種，不需要數據總體的任何先驗知識或是假設而直接基于實測數據樣本求出總體的概率分布密度函數，擺脫了對不可靠的先驗知識的依賴。
5. Third , based on the parameterization of the related land surface characteristics , using the probability density functions ( pdf ) and the grossly dynamic resistance method , a statistical - dynamical parameterization scheme is put forward . the mean evapotranspiration flux of lower reaches of the yangtze river is calculated by tins scheme and the results are compared with the formers " conclusions . finally , the calculated results by the statistical - dynamical parameterization scheme are compared with the mosaic method
   第三，在進行了有關地表特征物理量的參數化后，結合擬合的概率密度函數，根據總體動力掌阻抗法，提出了一種考慮網格區(qū)整體非均勻性的統(tǒng)計-動力參數化方案，并采用這種方案計算了長江三角洲地區(qū)的平均蒸發(fā)散通量，計算結果與以前研究者的研究成果進行了比較驗證。
6. It's difficult to find probability density function (pdf) in a sentence. 用probability density function (pdf)造句挺難的
7. The scheme is on the basis of the heterogeneity of soil water content ' s horizontal spatial distribution in the region and the evaporative power of relatively saturated region . if the probability density function ( pdf ) of soil water content ' s horizontal spatial distribution and the evaporative power of relatively saturated region are attainable , the mean evapotranspiration flux of the region can be calculated
   該方案以區(qū)域內土壤水分在水平空間上分布的非均勻性和相對飽和區(qū)地表蒸發(fā)力為基礎，在已知土壤水分水平空間分布律的概率密度函數( pdf )和飽和區(qū)地表蒸發(fā)力的前提下，實現(xiàn)區(qū)域平均蒸發(fā)散量的計算。
8. Present a modified particle filter ( pf ) algorithm based on the los / nlos binary state information of propagation environment using the numerical method of the probability density function ( pdf ) about the hybrid noise . the key idea is using numerical method to calculate the hybrid noise pdf , and integrating binary environment information to get filtering result
   2 .給出了應用粒子濾波器改進直達波與非直達波混合環(huán)境中移動終端跟蹤性能的新算法,特色是利用數值方法計算混合噪聲密度函數,結合二元環(huán)境信息完成濾波估計。
9. Then the unified approach can be applied to it to acquire the ensemble random evolutionary response . since the normal probability density function ( pdf ) may lead to instability of some sample systems when the random parameters taking sufficiently small negative values , an arch - like pdf and a more adaptable - pdf , together with the matching chebyshev polynomial approximation and gegenbauer polynomial approximation , are suggested . numerical examples show that the suggested methods are effective
   相比較而言，隨機模擬法的結果無疑是最可靠的，但是它的計算量嫌大；隨機攝動法的計算量遠小于隨機模擬法，但是它要求隨機攝動量必須是一個小量；正交展開法的計算精度好于隨機攝動法，其得到結果與隨機模擬法得到的結果幾乎吻合，其計算量略多于隨機攝動法，但與隨機模擬法相比要少的多，不過計算前的準備工作較費時。