POSITIONING APPARATUS, GNSS RECEIVER, INFORMATION TERMINAL DEVICE, POSITIONING METHOD AND PROGRAM

摘要

[PROBLEMS TO BE SOLVED] To obtain the position information promptly by calculating the ionospheric delay amount for the GNSS receiver quickly. [SOLUTION] The positioning apparatus 13 comprises a pseudo range measurement unit 13a that measures the pseudo range between the positioning satellite 5 and the antenna 2, an ionospheric delay amount calculating unit 13b that calculates an ionospheric delay amount included in the pseudo range, and a pseudo range corrector 13c that executes a positioning calculation by correcting the pseudo range based on the ionospheric delay amount. The ionospheric delay amount calculating unit 13b sets the upper limit of the partition number between the positioning satellite 5 and the antenna 2, determines the total number of electrons sTEC by integrating in the range of less than the upper limit of the partition number, and calculates the ionospheric delay amount based on the determined total number of electrons sTEC.