作　　者： ; ; ; (袁海义）;

机构地区： 沈阳理工大学

出　　处： 《成组技术与生产现代化》 2014年第1期45-49,共5页

摘　　要： 为了解决GPS接收机快速捕星问题,提高接收机定位速度,利用历书信息进行GPS卫星预报,提出了一种GPS卫星可见性预测的改进算法.在星历信息基础之上,用此算法对卫星的可见性及概略多普勒频移进行预测,并在GPS信号模拟器和GPS接收机组建的实验平台上,利用此种方法进行捕星定位实验.实验结果显示:该方法定位时间为原定位时间的39.5%. To solve the problem of GPS receiver catching stars quickly, raising the speed of the receiver＇s positioning and using GPS satellite ephemeris information on the basis of almanac, in this paper, an improved algorithm for prediction of GPS satellites visibility is put forward by using the exist ing broadcast ephemeris information and this algorithm, sat ellite visibility and doppler shift are forecasted. On the ex periment platform the GPS signal simulateor and GPS receiver are tested by using this method for star locating experi- ment. The experimental results show that this method is fast and efficient.

关 键 词： 可见性预测 多普勒频移

领　　域： [天文地球] [天文地球]