摘要
利用GPS测量高动态旋转载体飞行轨迹时,一般采用多个天线实现对GPS卫星的连续覆盖。如何选取合理的天线数,在增强天线覆盖特性和降低接收机设计的复杂性等方面达到最优,需要进行分析计算。在综合分析卫星仰角、GPS天线增益以及空间载体旋转对GPS卫星可见性影响的基础上,采用一种新的卫星可见性判断方法,仿真验证了不同天线数在载体旋转条件下对GPS卫星的连续覆盖特性,给出了适用于旋转载体弹道测量的合理的天线数目,具有一定的工程实用意义。
When trajectory of the highly dynamic rotating carrier is measured, several antennas are used to realize the continuous coverage to GPS satellites. It should be analyzed and calculated how to choose the number of antennas, achieve optimization at enhancing the coverage of antennas and reducing the complexity of GPS receiver design. Based the impact of satellites elevation, gain of GPS antenna and rotation of carrier to GPS satellites visibility, the paper adopts a new method to judge the GPS satellites visibility , analyses the continuous coverage to GPS satellites for different amount of antennas,and pres- ents a amount of antennas in reason, which adapts to ballistic measurement of rotating carrier. The research work should be valuable in the project application.
出处
《全球定位系统》
2009年第5期11-14,共4页
Gnss World of China
关键词
GPS
旋转
天线
卫星可见性
GPS
rotating
antenna
satellites visibility
