中文说明：GPS和INS组合导航程序，用于建立主成分分析模型，考虑雨衰 阴影 和多径影响，包括调制，解调，信噪比计算，基于matlab GUI界面设计,IMC-PID是利用内模控制原理来对PID参数进行计算。
English Description：
GPS and INS integrated navigation procedures for the establishment of principal component analysis model, consider rain attenuation shadowing and multipath effects, including modulation, demodulation, signal to noise ratio is calculated, based on Matlab GUI interface design, IMC-PID is by using the internal model control principle of PID parameters are calculated.