Title:
差分補正データの送信方法及び受信方法、システム及び装置
Document Type and Number:
Japanese Patent JP7292436
Kind Code:
B2
Abstract:
The present application relates to the field of positioning, and discloses transmitting and receiving methods for differential correction data, a system, and a device. The differential correction data comprises a first, second, third, and fourth model polynomial coefficient of an oblique ionospheric correction algorithm model. The transmitting method comprises: a service end acquiring an ionospheric data range and a resolution of a current region; the service end separately determining, according to the ionospheric data range and the resolution of the current region, a bit length for at least one of the second, third, and fourth model polynomial coefficient; and the service end sending, according to the determined bit length, the at least one of the second, third, and fourth model polynomial coefficient to a user terminal. Embodiments of the present application perform customized arrangement and compression on differential correction data to reduce a large amount of transmission costs and time. In addition, the simplified data prevents an increase in the bit error rate caused by attenuation of a geosynchronous satellite signal transmitted across a long distance.
Inventors:
Chao Yuanyi
Application Number:
JP2021572347A
Publication Date:
June 16, 2023
Filing Date:
June 03, 2020
Export Citation:
Assignee:
QIANXUN SPATIAL INTELLIGENCE INC.
International Classes:
G01S19/07
Domestic Patent References:
| JP2003344524A | ||||
| JP2015155917A | ||||
| JP2020508456A |
Foreign References:
| WO2019063379A1 | ||||
| WO2019095122A1 | ||||
| CN109802757A | ||||
| CN107861131A | ||||
| CN109061676A | ||||
| US20140062776 |
Attorney, Agent or Firm:
Patent Attorney Corporation Washida International Patent Office