CN-121985294-A - Positioning time service base station, method, storage medium and program product

CN121985294ACN 121985294 ACN121985294 ACN 121985294ACN-121985294-A

Abstract

The application provides a positioning time service base station, a positioning time service method, a storage medium and a program product, relates to the field of communication, and can solve the problems that the construction and operation costs of the existing positioning time service scheme are high and service blind areas exist. The base station comprises a GNSS receiver chip, a crystal oscillator, a data acquisition and processing unit and a radio frequency unit, wherein the GNSS receiver chip is used for receiving more than two frequency point signals at the same time, the frequency point signals are derived from a satellite navigation system, the crystal oscillator is used for providing a time reference, the data acquisition and processing unit is used for receiving observation data of the satellite navigation system, differential correction data is obtained by performing differential calculation at least based on the observation data, the differential correction data are used for carrying out positioning correction or time service correction on terminal equipment, and the radio frequency unit is used for sending the differential correction data to the terminal equipment located in a service area of the positioning time service base station.

Inventors

JIN YAO
ZHANG HE
JING CHENFENG
QU HAITAO
WANG ZELIN
TANG XIONGYAN
HUANG WEN
ZHOU BO
ZHANG ZINING

Assignees

中国联合网络通信集团有限公司

Dates

Publication Date: 20260505
Application Date: 20260105

Claims (13)

1. The positioning time service base station is characterized by comprising a GNSS receiver chip, a crystal oscillator, a data acquisition and processing unit and a radio frequency unit, wherein the data acquisition and processing unit is respectively in communication connection with the GNSS receiver chip, the crystal oscillator and the radio frequency unit; The GNSS receiver chip is used for receiving more than two frequency point signals at the same time, wherein the frequency point signals are derived from a satellite navigation system; the crystal oscillator is used for providing a time reference; the data acquisition and processing unit is used for receiving the observation data of the satellite navigation system, performing differential calculation at least based on the observation data to obtain differential correction data, wherein the differential correction data is used for positioning correction or time service correction of terminal equipment; The radio frequency unit is used for sending the differential correction data to terminal equipment positioned in a service area of the positioning time service base station.
2. The base station of claim 1, wherein the differential correction data comprises differential positioning data and differential timing data, wherein the performing differential analysis based at least on the observed data to obtain differential correction data comprises: Performing differential calculation based on the observation data and the local coordinate data to obtain differential positioning data; and performing differential calculation based on the observed data and the local clock difference data to obtain differential time service data.
3. The base station according to claim 1 or 2, wherein the differential correction data comprises: Service type identification, data validity time stamp and base station identification, wherein the service type identification is used for indicating that the differential correction data is differential positioning data or differential time service data.
4. The base station of claim 1, wherein the transmitting the differential correction data to the terminal device located in the service area of the positioning timing base station comprises: And packaging the differential correction data, the satellite health condition and the data integrity mark into a differential correction data message, and sending the differential correction data message to terminal equipment positioned in a service area of the positioning time service base station.
5. The base station of claim 1, wherein the observation data comprises: pseudo-range, carrier phase, doppler shift, signal to noise ratio, satellite ephemeris.
6. The base station of claim 1, wherein the radio frequency unit is further configured to: the data processing center is used for carrying out differential calculation at least based on the observed data to obtain differential correction data; And sending the differential correction data to terminal equipment positioned in a service area of the positioning time service base station.
7. The positioning time service method is characterized by being applied to a data processing center, and comprises the following steps: At least receiving observation data sent by a positioning time service base station; Performing differential calculation at least based on the observed data to obtain differential correction data; And sending the differential correction data to terminal equipment positioned in a service area of the positioning time service base station.
8. The method of claim 7, wherein the differential correction data comprises differential positioning data and differential timing data, wherein the performing differential analysis based at least on the observed data to obtain differential correction data comprises: performing differential calculation based on the observed data and the local coordinate data of the positioning time service base station to obtain differential positioning data; and performing differential calculation based on the observed data and the local clock difference data of the positioning time service base station to obtain differential time service data.
9. The method according to claim 7 or 8, wherein the differential correction data comprises: Service type identification, data validity time stamp and base station identification, wherein the service type identification is used for indicating that the differential correction data is differential positioning data or differential time service data.
10. The method of claim 7, wherein the transmitting the differential correction data to a terminal device located in a service area of the positioning timing base station comprises: And packaging the differential correction data, the satellite health condition and the data integrity mark into a differential correction data message, and sending the differential correction data message to terminal equipment positioned in a service area of the positioning time service base station.
11. The method of claim 7, wherein the observation data comprises: pseudo-range, carrier phase, doppler shift, signal to noise ratio, satellite ephemeris.
12. A computer readable storage medium, characterized in that the computer readable storage medium comprises a non-transitory computer readable storage medium having stored thereon computer executable instructions that, when run on an electronic device, cause the electronic device to perform the positioning timing method according to any of claims 7 to 11.
13. A computer program product, characterized in that the computer program product comprises a computer program which, when run on an electronic device, causes the electronic device to perform the positioning timing method according to any of the claims 7 to 11.

Description

Positioning time service base station, method, storage medium and program product Technical Field The present application relates to the field of communications, and in particular, to a positioning time service base station, a positioning time service method, a storage medium, and a program product. Background The precision positioning and timing technology is a key infrastructure of the modern information society, and is widely applied in the fields of mapping, traffic, unmanned aerial vehicles, agriculture, electric power, finance and the like. But the existing scheme has high cost and insufficient coverage. Disclosure of Invention The application provides a positioning time service base station, a positioning time service method, a storage medium and a program product, which can solve the problems of high construction and operation and maintenance costs and service dead zones of the existing positioning time service scheme. The application provides a positioning time service base station which comprises a global satellite navigation system (Global Navigation SATELLITE SYSTEM, GNSS) receiver chip, a crystal oscillator, a data acquisition and processing unit and a radio frequency unit, wherein the data acquisition and processing unit is respectively in communication connection with the GNSS receiver chip, the crystal oscillator and the radio frequency unit, the GNSS receiver chip is used for simultaneously receiving more than two frequency point signals, the frequency point signals originate from the satellite navigation system, the crystal oscillator is used for providing a time reference, the data acquisition and processing unit is used for receiving observation data of the satellite navigation system, differential correction data is obtained by performing differential calculation at least based on the observation data, the differential correction data is used for positioning correction or time service correction of terminal equipment, and the radio frequency unit is used for sending the differential correction data to the terminal equipment in a service area of the positioning time service base station. The application provides a Positioning time service base station, which can realize providing Positioning, navigation, time service and Communication (PNTC) integrated service on the basis of the existing Communication base station, wherein the base station reforms the existing Communication base station, and comprises the steps of adopting a GNSS receiver chip to replace the original single Positioning/time service chip, adding high-stability crystal oscillator (such as constant-temperature crystal oscillator (OCXO)) as a local clock reference, and improving the accuracy and stability of an observed value; the method comprises the steps of receiving the observation data of the satellite Navigation system by the data acquisition and processing unit, outputting differential correction data, multiplexing the existing radio frequency unit and the terminal equipment for Communication, and enabling the Communication base station to realize differential time service and differential Positioning, so that special Positioning equipment and time service equipment for construction and operation and maintenance are not needed, positioning time service precision is improved, and Positioning time service cost is reduced. In summary, the application can construct a wide-coverage and dense-coverage capacity network with low cost, and can simultaneously provide centimeter-level positioning and sub-nanosecond time service. One possible implementation manner of the differential correction data comprises differential positioning data and differential time service data, wherein differential decomposition is performed at least based on observation data to obtain the differential correction data, the differential correction data comprises differential positioning data obtained by performing differential decomposition based on the observation data and local coordinate data, and differential time service data obtained by performing differential decomposition based on the observation data and the local clock difference data. In another possible implementation manner, the differential correction data comprises a correction value, a service type identifier, a data validity time stamp and a base station identifier, wherein the service type identifier is used for indicating that the differential correction data is differential positioning data or differential time service data. In another possible implementation manner, the differential correction data is sent to the terminal equipment located in the service area of the positioning time service base station, and the method comprises the steps of packaging the differential correction data, the satellite health condition and the data integrity mark into a differential correction data message, and sending the differential correction data message to the terminal equipment located in the