False distance presumption method, false distance presumption program, GNSS receiving device, and portable terminal

摘要

Topic It presumes calculates false distance in high accuracy without having an influence on multiple pass.SolutionsFrom finite difference value DV (iv) it is of C/No and the finite difference value of the time change quantity and the delta range which of observation false distance are based on the reception signal multiple pass is decided (S101 S103). If there is no multiple pass, (S104: No), with the error dispersion of false distance and the error dispersion of the delta range as a fixed value, weight factor decision (S105). On the one hand, if there is multiple pass, (S104: Yes), to calculate the dispersion of finite difference value and the dispersion of the delta range (S106), calculating the dispersion of false distance (S107), weight factor is decided from dispersion of the false distance which was calculated and dispersion of the delta range (S108). It presumes calculates false distance with the weight attaching hatch filter and, making use of the weight factor which is decided (S109). Selective figure Figure 4