CAJ | 학술논문

在GNSS中，获取各个可见卫星的位置和速度是卫星导航接收机实现定位、测速和定时的必要条件。介绍北斗全球导航卫星的星历数据参数，依据卫星星历参数，给出了卫星空间位置、运行速度和加速度的数学表达式；研究基于轨道插值的卫星状态估计方法，利用分段三次埃尔米特插值计算卫星位置与速度；采用Matlab软件编制星历参数法与插值法的解算软件，并通过实验仿真验证了两种方法的可行性。结果表明，插值法得到的卫星位置误差可满足导航定位需求，在处理数据量大的情况下，插值法提高了计算效率。
재GNSS중，획취각개가견위성적위치화속도시위성도항접수궤실현정위、측속화정시적필요조건。개소북두전구도항위성적성력수거삼수，의거위성성력삼수，급출료위성공간위치、운행속도화가속도적수학표체식；연구기우궤도삽치적위성상태고계방법，이용분단삼차애이미특삽치계산위성위치여속도；채용Matlab연건편제성력삼수법여삽치법적해산연건，병통과실험방진험증료량충방법적가행성。결과표명，삽치법득도적위성위치오차가만족도항정위수구，재처리수거량대적정황하，삽치법제고료계산효솔。
In GNSS ( Global Navigation Satellite System ) , the obtaining of visible satellites′position and velocity is necessary condition to achieve positioning , timing and velocity by Satellite navigation receivers .Ephemeris data expression of Compass is introduced .The Mathematical expression of the satellite position , running speed and acceleration is given according as satellite Ephemeris .The state estimate of satellite is researched based on orbit interpolation , the position and velocity of satellite is computed by Amy Stewart interpo-lation algorithm .Corresponding Calculation software of Ephemeris data expression and interpolation algorithm is developed , digital simulation proves the feasibility of two algorithms , the results show that the error of satellite position can satisfy the requirement of nav-igation and position using interpolation algorithm , in the case of vast data processing , corresponding computation efficiency is en-hanced comparing Ephemeris data expression .