| 1. | Based on wavelet analysis , wls is the best linear unbiased estimator of regression model parameters in the context of l / f noise 基于小波技术的wls法是具有1 f噪声的系统回归模型参数的最佳线性无偏估计。 |
| 2. | A new method of the application of wls improved by r / s analysis to the monitoring of gas - solid fluidized bed is proposed 将改进的基于wls的ar模型法应用于气固流化床的流型辨识,提出了一种气固流化床过程监控的新方法。 |
| 3. | A method , called r / s analysis , is employed to improve the estimate accuracy of the hurst exponent . the simulation results show the method mentioned above is also an efficient filter 针对hurst指数的估计误差较大的问题,本文引入r s分析法,仿真研究表明该方法在提高hurst指数估计精度的同时提高了wls法的滤波效果。 |
| 4. | The main works as the following : r / s analysis is introduced to improve wavelet - generalized least squares ( wls ) in order to increase the estimate accuracy of the hurst exponent 本文的主要工作和创新点如下:提出了一种针对wls ( wavelet - generalizedleastsquares )的ar模型法的改进算法。引入r s分析法对wls法进行改进,以提高hurst指数估计精度及滤波效果。 |
| 5. | Experimental results show that wls is better than classical autoregressive ( ar ) models for 0 . 5 < h < 1 . it also can be seen that the disadvantage of wls is most salient for the lower of estimate accuracy of hurst exponent 本文对wls法进行了仿真研究,研究结果表明wls法对h 0 . 5的1 f噪声的滤除作用明显优于传统的ar模型,但同时发现wls法对hurst指数的估计误差较大。 |
| 6. | There were mainly two kinds of alum before 1956 in southern yunnan : " dry land + woodland " ( dl + wl ) and " paddy field + dry land + woodland " ( pf + dl + wl ) . the former included two subtypes : woodland supremacy mode ( wls ) and dry land supremacy mode ( dls1 ) 本文将建国时滇南的农地利用模式分为旱地+林地型和水田+林地+旱地型两大类,其中前者包括林地为主型和旱地为主型两个亚类,后者包括旱地为主型、山区水田为主型和坝区水田为主型三个亚类。 |
| 7. | 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 提出了一种动态定位算法,该算法通过对ms第一次初始位置估计来确定ms与服务bs的距离,再选择参与定位的toa测量值,确定wls算法中的加权因子,从而改进了定位性能。 |
| 8. | In order to reduce the adverse influence of nlos error to location performance , this algorithm firstly makes initial mobile position estimation by mean tdoa / toa measurements , then estimates nlos error within tdoa / toa measurements by parameters of tip 1 channel model , smoothes and reconstructs tdoa / toa measurements , and finally utilizes two step wls computation . the application of this algorithm under different cellular environments is also discussed and its effectiveness is demonstrated by simulation results . finally , the basic location method , location method implementation , network architecture , signaling protocol and interface , and location procedures of wcdma network mobile location are analyzed 百臼主回大学槽士扭允生攀幢伍丈第v页接着,通过对tdo咖a测量值误差的分析,本文提出了一种首先利用tdo咖a平均测量值对移动台位置进行初始估计,并利用tipi信道模型参数估计出thoafl ’ oa测量值中nlos误差的大小,然后对tdo … a测量值进行平滑与重构,再采用两次wls计算,以降低nlos误差对定位性能不利影响的的定位精度提高算法,讨论了这种算法在蜂窝网络不同环境条件下的具体实施方法,通过详细仿真验证了这种算法的有效性。 |
| 9. | State estimation used by least square algorithm is usually done at the condition of unknown of it " s statistic property . to make the estimate error least , this paper introduce weight function and use weight least square algorithm ( wls ) . the result of simulation shows that the precision of estimate result is highly enhanced and this method can satisfy the need of move and control of the power system 在不知道随机干扰信号统计特性的情况下,采用最小二乘法对电力系统的运行参数进行状态估计,为了使估计误差的方差矩阵最小,本文引入权函数使用加权最小二乘法,使估计结果的准确性大大提高,仿真结果显示,该方法完全能够满足电网运行和控制的要求。 |