CAJ | 학술논문

针对采用多项式对GPS精密星历进行插值随着阶数增加插值,精度出现衰减或不稳定的问题,提出了基于移动区间的GPS精密星历内插方法来解决这一问题。采用不同分析中心提供的精密星历进行插值计算,比较不同数据产品的质量,选用数据质量比较好的精密星历进行插值计算,比较三种多项式插值的插值精度。实验结果表明：IGS所提供的精密星历数据质量比较好;采用基于移动区间的多项式插值方法,插值精度可达到亚厘米级。
침대채용다항식대GPS정밀성력진행삽치수착계수증가삽치,정도출현쇠감혹불은정적문제,제출료기우이동구간적GPS정밀성력내삽방법래해결저일문제。채용불동분석중심제공적정밀성력진행삽치계산,비교불동수거산품적질량,선용수거질량비교호적정밀성력진행삽치계산,비교삼충다항식삽치적삽치정도。실험결과표명：IGS소제공적정밀성력수거질량비교호;채용기우이동구간적다항식삽치방법,삽치정도가체도아전미급。
It is found that when polynomial interpolation methods are used for GPS precise ephemeris interpolation,the terms of interpolation increases,and the accuracy will decrease.In this thesis,the theory of moving intervals is introduced to solve the problem.The quality of precise ephemeris products are compared by using different polynomial interpolation methods.Experiment shows that precise ephemeris provided by IGS is better than other data products.It also shows that interpolation based on moving intervals can solve the problem on interpolation accuracy decreasing.The interpolation accuracy can reach to the level of sub-centimeter and the results are extreme stable.