gps精密单点定位中电离层延迟改正模型的研究与分析-大地测量学与测量工程专业毕业论文.docx

硕I:学位论文 ABSTRACT
ABSTRACT
Precise Point Positioning(PPP)is a new GPS technique developed in the last few years,which is very useful for the orbit determination of LEO satellite,wide area geoscience research and national land resource investigation,aslo is the GPS of hot point Precise Point Positioning,one of the major error sources is Ionospheric ,
as the ionosphere itself is unstable,with the current understanding of its physical characteristics are certain ambiguity,limited by the accuracy of their experience model to describe.
In this paper is focus on ionospheric delay error on the single point positioning precision the impact of an in—depth study,the aim is to establish model of the ionosphere to the elimination of Precise Point Positioning the impact of the summed up the current ionospheric delay corrective details follow by:
Study of the ionosphere and the fundamental characteristics of the ionosphere on single—point precision of GPS positioning measuring the in the research and application,the main model of the ionosphere,the existing model of the ionosphere delay in the analysis and
di scussion.
Klobuchar model on the correct formula and calculation methods, the main single—frequency receiver for the ionospheric delay corrective.
3. Focused on the dual—frequency observations measured ionospheric
硕Ij学位论文 ABSTRACT
delay corrective establishment of the theory and model,using the double single base station frequency observations to establish a single station VTEC model,the last to eliminate Precise Point Positioning of error.
Matlab—based platform based on the preparation of the establishment of ionospheric delay in the procedure error model,and its main realization of a single station Klobuchar model and surface fitting model will be calculated by the model and the single—station surface fitting model of the ionosphere correction,into a
single point precision GPS p