使用混沌与分形分析的例程，使用大量的有限元法求解偏微分方程，GPS和INS组合导航程序，DC-DC部分采用定功率单环控制，分析了该信号的时域、频域、倒谱，循环谱等。- Use Chaos and fractal analysis routines, Using a large number of finite element method to solve partial differential equations, GPS and INS navigation program, DC-DC power single-part set-loop control, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc.