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针对频率、幅值和相位均发生变化的时变信号，现有自适应陷波器(ANF)频率估计方法存在信号频率跟踪精确性和稳定性不足的问题，为此提出了一种基于新误差函数的ANF时变信号频率跟踪方法，通过新误差函数改善自适应算法收敛至最优频率解的精度与速度，以提高时变信号频率跟踪的精确性和稳定性。给出了新误差函数分析结果，新ANF方法实现步骤和该频率估计方法的Cramer-Rao下限。通过训一算与现有ANF的时变信号频率跟踪方法性能进行了比较分析，并针对科里奥利质量流量训一时变信号进行了现场实验验证。结果表明，该方法具有收敛速度快、跟踪精度高、更接近Cramer-Rao下限和抗噪性好的优点。

练习程序，问题如下：进行高精度整数的加、减、乘运算。输入两个十进制大整数M和N（M、N最长可达50位），计算运算结果并输出。【输入形式】标准输入上依次分行输入以下内容：1.第一行输入第一个大整数M。M可能带有负号，后面是最长可达50位的数字序列。2.第二行只有一个字符，可以是“+”、“-”、“*”，分别代表加、减、乘三种运算符。3. 第三行输入大整数N，格式与M相同M、N均不带有前缀的多余的0【输出形式】在标准输出上打印运算结果，输出一行字符序列，是大整数M和N和运算结果。如果该运算结果是正数，则直接输出各位数字序列；如果是负数，则首先要输出负号。各位数字紧密输出，不带有前缀的多余的0。-practice procedures, as follows : high-precision integer for the addition, subtraction, multiplication. The importation of two decimal integer big M and N (M, N up to a maximum of 50), the calculated results of operations and output. Entry forms : standard input on the importation of branches were the following : 1. The first line inputs, a large integer M. M may have negative, is back up to 50 digital sequence. 2. Only a second line of characters could be "","-","*", respectively, plus or minus, by three operators. 3. The third line inputs large integer N, M and the same format M, N are not redundant with the prefix 0 output-- in the form of print on standard out

Industrial Mathematics

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用有限元法求解三角形形区域上的Possion方程-using the finite element method triangle-shaped region of Possion equation

实验目的：用Lingo软件求解线性线性规划问题。 实验内容：制定最佳连续投资方案 某部门在今后五年内考虑下列项目投资 -Experimental Objective: Lingo software for solving linear linear programming problem. Experiment content: develop the best program of continuous investment A department in the next five years to consider the following investment

一个用到动态规划算法的acm题-used a dynamic programming algorithm that acm

介绍kalman filtering 的word文档，里面有关于kalman filtering五个重要公式的详细推导过程，对于初学者理解kalman filtering相当有用-Kalman filtering, introduced the word document, there are five important kalman filtering on a detailed formula derivation process, kalman filtering for beginners to understand very useful

我自己写的一个三次样条插值算法，自已感觉很严密，请大家指正。-I wrote it myself a cubic spline interpolation algorithm, self-feelings are very close, please correct me.

经典算法之:连续邮资问题,全排列问题,有限期任务安排,整数划分问题,装载问题-classic algorithms : for the postage issue, all issues with a task deadline, integer division, loading problems