GPS信号模拟器卫星状态参数的算法研究，模拟器，轨道参数，非球形地球引力。-GPS satellite signal simulator state parameters of the algorithm, simulator, orbital parameters, non-spherical Earth' s gravity.

已知轨道根数，用代数法求卫星轨迹，并画含有地球模型的动图-Known orbital number, the algebraic method for satellite trajectory, and painted with the earth model of the dynamic map

利用微分法将轨道根数求卫星位置速度,并画含有地球模型的动图-Using the differential method to track the number of required satellite position, velocity, and painted action figure containing Earth Model