本文重点介绍了如何通过GPS卫星星历来计算卫星的坐标，采用了直接法、拉格朗日插值法以及切尔比雪夫拟合的方法分析通过广播星历计算的精度-This paper focuses on how the GPS satellite has always calculate the coordinates of the satellite, using the direct method, Rugby Long Day interpolation Mitchell Chebyshev fitting m

NRZ type differential phase modulation signal modeling and simulation analysis, Phased array antenna pattern (Chebyshev weights), Dual-line interpolation FFT harmonic analysis kaiser windows.

Jacobi iteration for solving linear equations class-based, Based chebyshev underwater acoustic signal analysis, Dual-line interpolation FFT harmonic analysis kaiser windows.