US 12,111,402 B2
Positioning assistance apparatus, positioning assistance method, and computer-readable recording medium
Ryo Miyamoto, Tokyo (JP); Maho Kashiwagi, Tokyo (JP); and Yuka Kanda, Tokyo (JP)
Assigned to NEC Solution Innovators, Ltd., Tokyo (JP)
Appl. No. 17/633,648
Filed by NEC Solution Innovators, Ltd., Tokyo (JP)
PCT Filed Aug. 20, 2020, PCT No. PCT/JP2020/031511
§ 371(c)(1), (2) Date Feb. 8, 2022,
PCT Pub. No. WO2021/044866, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 2019-162454 (JP), filed on Sep. 5, 2019.
Prior Publication US 2022/0317311 A1, Oct. 6, 2022
Int. Cl. G01S 19/07 (2010.01)
CPC G01S 19/072 (2019.08) 12 Claims
OG exemplary drawing
 
1. A generation-side apparatus comprising:
an antenna for receiving positioning signals from one or more positioning satellites;
a processor; and
a memory storing instructions executable by the processor to:
determine a reference position of the generation-side apparatus;
calculate an estimated position of the generation-side apparatus based on the positioning signals received from the one or more positioning satellites;
calculate a positioning error between the reference position and the estimated position;
calculate a calculated ionosphere delay amount at a time when the estimated position is calculated;
generate local correction information for the one or more positioning satellites, the local correction information including the calculated ionosphere delay amount;
receive a current temperature and humidity;
determine an estimated ionosphere delay amount using an ionosphere delay model generated through machine learning, based on the positioning error and the current temperature and humidity;
calculate a first degree of precision of the calculated ionosphere delay amount using the estimated ionosphere delay amount;
calculate an accuracy of the calculated ionosphere delay amount using the first degree of precision; and
transmit the local correction information and the accuracy of the calculated ionosphere delay amount included in the local correction information to a use-side apparatus, the use-side apparatus using the local correction information and the accuracy of the calculated ionosphere delay amount included in the local correction information to determine a position of the use-side apparatus based on positioning signals that the use-side apparatus receives from the one or more positioning satellites.