CAJ | 학술논문

北斗卫星导航系统完好性参数包括用户差分距离误差(UDRE)、区域用户距离精度（RURA）和格网点电离层垂直延迟改正数误差（GIVE）。本文研究了 UDRE、RURA 及 GIVE的算法，分析仿真了UDRE和RURA一天中的变化，给出了格网点（IGP）97（40°N，115°E）一天内GIVE的变化曲线，验证了算法的可行性。仿真结果表明，UDRE、RURA以及GIVE的算法均能够以99.9%的置信度限定等效钟差改正数和格网点电离层延迟改正误差，为用户提供可靠的完好性监测。
북두위성도항계통완호성삼수포괄용호차분거리오차(UDRE)、구역용호거리정도（RURA）화격망점전리층수직연지개정수오차（GIVE）。본문연구료 UDRE、RURA 급 GIVE적산법，분석방진료UDRE화RURA일천중적변화，급출료격망점（IGP）97（40°N，115°E）일천내GIVE적변화곡선，험증료산법적가행성。방진결과표명，UDRE、RURA이급GIVE적산법균능구이99.9%적치신도한정등효종차개정수화격망점전리층연지개정오차，위용호제공가고적완호성감측。
The integrity parameters of BeiDou satellite navigation system include user differential range error (UDRE), regional user range accuracy (RURA), and grid ionosphere vertical error (GIVE). In this paper, the algorithms about UDRE, RURA and GIVE are researched, the variation of the UDRE and RURA in a whole day are analyzed and simulated, the variation curve of the GIVE in a whole day is presented about ionospheric grid point(IGP) No. 97(40°N, 115°E), and the feasibility of the algorithms are verified. The simulation shows that the algorithms of UDRE, RURA and GIVE can limit the equivalent clock error and the grid point ionospheric delay error with a confidence level of 99.9%, and reliable integrity monitoring can be provided for users by these parameters.