CAJ | 학술논문

针对用GPS历书预测卫星位置精度不高的问题，分析了历书和星历参数之间的差别，重点研究了卫星位置预测的算法，提出了历书和星历相结合预测可视范围内完整星座的方法，在此基础上对不同时间点的卫星位置进行了预测仿真。结果表明，采用历书和星历相结合的方法预测卫星位置，可以局部提高可见卫星的位置精度。该方法能满足对卫星位置预测精度有一定要求的GPS应用。
침대용GPS역서예측위성위치정도불고적문제，분석료역서화성력삼수지간적차별，중점연구료위성위치예측적산법，제출료역서화성력상결합예측가시범위내완정성좌적방법，재차기출상대불동시간점적위성위치진행료예측방진。결과표명，채용역서화성력상결합적방법예측위성위치，가이국부제고가견위성적위치정도。해방법능만족대위성위치예측정도유일정요구적GPS응용。
The position of satellites will not be exact using GPS almanac to forecast. Considering this problem, the preferences of almanac and ephemeris are contrasted, the arithmetic of satel-lites position forecasting is analyzed and the method of GPS constellation forecasting is put for-ward using ephemeris and almanac. On the basis of this new method, the simulation results of satellites position forecasting are obtained. The results show that, using the combination of ephemeris and almanac to forecast satellites position can partly improve the precision of visible constellation. This new method can fulfill the requirements of the satellites position accuracy for the GPS application.