这些迭代算法的计算速度很 慢，我们可以利用契比雪夫（Chebyshev）作为替代的方法，用三。优化过程或者 9 第一章FIR数字滤波器 迭代加权最d＂--乘算法得到乙的近似。
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契比雪夫定理 Chebyshev's theorem
契比雪夫多项式 Chebyshev polynomials ; Tchebyscheff polynomials
契比雪夫滤波器 Chebyshev filter ; Tchebyscheff filter ; filter Chebyshev
契比雪夫组合 Chebyshev pattern ; Tchebyscheff array
契比雪夫平差 Chebyshev adjustment
契比雪夫法 Log-Tehebycheff method
契比雪夫式外推法 Chebyshev polynomial extrapolation
契比雪夫分布 distribution Chebyschev
契比雪夫投影 chebyshev projection
将本方法在周期时段划分、拟合精度、函数收敛方面与契比雪夫多项式拟合法进行了对比。
The Fourier polynomial fitting is compared with the Chebysher polynomial fitting in the division of cyclic time interval and fitting accuracy as well as convergence of function.
一种是“可变参数内插法”，另一种是用契比雪夫多项式对卫星直角坐标进行高阶内插的方法。
One of them is "the interpolation of variable parameters" and the other is the higher order interpolation of rectangular coordinates of satellites by means of Chebyshev polynomial.
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