一种场强测定的数值计算方法  

A Numerical Calculation Method on Measurement of Field Intensity

作　　者：缪佳佳 周天和[2] 

机构地区：[1]浙江省中波发射管理中心,杭州310012 [2]浙江理工大学理学院,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2014年第3期329-332,共4页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金项目(11201429)

摘　　要：提出了一种场强测定的算法,利用已知的场强数据,计算未知区域的场强的函数分布。通过已测定的场强数据的位置去构造相应的三角网格,在每个三角网格上建立Bernstein多项式,利用最小化能量函数的方法,确定Bernstein基函数的B系数,从而确定整个场强的函数分布。通过浙江省35个测定点某一频率覆盖区域内场强的实际接收情况检测及进行模拟计算,结果表明该算法是可行。它可以为广播频率的设计、发射机功率的确定以及台站位置的规划提供参考。This paper proposes an algorithm on measurement of field intensity to calculate field intensity distribution function of unknown regions by known field intensity data.Specifically,it constructs corresponding triangular meshes by positions of measured field intensity data,builds Bernstein polynomials on each triangular mesh,and uses the method of minimizing energy function to determine B coefficient of Bernstein basis function,and thus determines the function distribution of the entire field intensity. Through testing and simulation calculation of actual field intensity reception of a frequency coverage area among 35measuring points in Zhejiang Province,results indicate that this algorithm is feasible,and could provide reference for the design of radio frequency,determination of transmitter power and station location planning.

关 键 词：BERNSTEIN基 能量函数 样条函数 场强分布函数 

分 类 号：O241.5[理学—计算数学]