The orbital inclination, orbital altitude, elevation of GPS antenna and orbital eccentricity were researched as the influential factors to dopplerrange.
研究轨道倾角、轨道高度、GPS天线仰角和轨道偏心率等因素对多普勒频率搜索范围的影响。
2
On the bases of analyzing triangle wave form modulated LFM, the method of using DDR (Dual Channel Directional Dopplerrange) technique to eliminate the influence of speed to range is presented.
在分析三角波调制的线性调频信号的基础上，提出了用DDR技术消除速度对测距的影响方法。
3
LEO satellite communication system has the properties of larger power dynamic range, larger and faster changed doppler frequency shift and rapid fluctuation compared to ordinary communication system.