基于STK的测量船GPS天线遮挡模型仿真与分析  

The GPS Antenna Shelter Model Simulation and Analysis of the Measurement Ship Base on STK

作　　者：陈琳[1] 朱忠[1] 李强[1] 陈武[1] 

机构地区：[1]中国卫星海上测控部,无锡214431

出　　处：《科学技术与工程》2013年第21期6265-6269,共5页Science Technology and Engineering

摘　　要：分析了GPS定位原理及精度评估方法,构建了测量船GPS天线遮挡模型。对不同遮挡条件下船载GPS精度因子变化进行仿真与分析。结果表明,在大范围遮挡条件下,导致GPS精度因子变大;通过提高GPS天线位置,可有效减小船载GPS精度因子;通过预测分析不同遮挡对GPS精度因子影响,为测量船授时与定位系统的定守时切换提供可靠、准确数据。The positioning principle of GPS and the precision evaluating method are analyzed.The GPS antenna shelter model of the measurement ship is established.And then the varying of the dilutions of precision are simulated and analyzed in condition of the different shelters.Results show that the dilutions of precision are increasing due to the large-scaling shelter.The dilution of precision can be decreased effectively via improving the height of GPS antenna location;The dilution of precision effect can be prognosticated and analyzed in order to provide exactable and credible datum for the switch of time holding and adjusting for the Measurement ship positioning and timing system.

关 键 词：测量船 STK GPS 遮挡 精度因子 

分 类 号：TN967.1[电子电信—信号与信息处理]