GNSS antenna with an integrated antenna element and additional information sources

• US 10,578,749 B2
• Filed: 08/20/2018
• Issued: 03/03/2020
• Est. Priority Date: 04/27/2016
• Status: Active Grant

• Current Assignee: Topcon Positioning Systems Incorporated (Topcon Corporation)
• Original Assignee: Topcon Positioning Systems Incorporated (Topcon Corporation)
• Inventors: Vasilyuk, Nikolai Nikolaevich, Tychinskiy, Sergey Ivanovich, Doronin, Alexandr Vladimirovich, Sandler, Igor Arkadievich, Sokolov, Andrey Mikhailovich
• Primary Examiner(s): Phan, Dao L
• Application Number:
  US16/105,052
• Publication Number:
  US 20190004182A1
• Time in Patent Office: 561 Days
• Field of Search: 34235732
• CPC Class Codes: G01C 17/02 Magnetic compasses
• CPC Class Codes: G01S 19/35 Constructional details or hardware or software details of the signal processing chain
• CPC Class Codes: G01S 19/36 relating to the receiver frond end
• CPC Class Codes: G01S 19/49 whereby the further system is an inertial position system, e.g. loosely-coupled
• CPC Class Codes: G01W 1/02 Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed G01W1/10 takes precedence

Abstract

An improved GNSS antenna having an integrated antenna element in combination with a plurality of built-in sources of additional data and/or a plurality of devices for receiving additional information for exchanging the information and transmission of GNSS signals from the antenna element to a GNSS receiver over a single RF cable.

Claims

1. A transceiver comprising:

a modulator/demodulator that receives (i) digital data, the digital data comprising additional information from particular sources of a plurality of sources, and converts the digital data into a converted analog signal and (ii) an analog signal and decodes the analog signal into digital synchronization signals;

a first bandpass filter that receives the analog signal;

a second bandpass filter that receives and filters the converted analog signal prior to transmission thereof across an RF cable; and

an output that establishes a two-way data communication, over the RF cable, between a GNSS antenna associated with the transceiver and a GNSS receiver and for transmitting the converted analog signal and the digital synchronization signals over the RF cable such that the GNSS antenna synchronizes the particular sources of the plurality of sources with a time scale associated with at least one location external to the GNSS antenna via the RF cable and the transceiver.

2. The transceiver of claim 1 wherein the plurality of sources includes at least one inertial sensor, the inertial sensor measuring at least one of an acceleration vector and an angular velocity vector.

3. The transceiver of claim 1 wherein the plurality of sources includes at least one atmospheric sensor, the atmospheric sensor measuring at least one of a pressure, a humidity level, and an ambient temperature at a point of receiving a GNSS signal.

4. The transceiver of claim 1 wherein the plurality of sources include at least one magnetic sensor, the magnetic sensor measuring at least one magnetic field vector.

5. The transceiver of claim 1 wherein the first bandpass filter has a first amplitude-frequency characteristic (AFC) and the second bandpass filter has a second AFC, the first AFC and the second AFC having different values.

6. The transceiver of claim 1 wherein the two-way data communication is a full duplex mode communication.

7. The transceiver of claim 1 wherein the two-way data communication is a half-duplex communication.

8. The transceiver of claim 1 further comprising:

a narrow-band low frequency filter for receiving, across the RF cable, a direct voltage signal.

9. The transceiver of claim 8 wherein the direct voltage signal powers one or more electronic blocks associated with the GNSS antenna.

10. The transceiver of claim 1 wherein the transceiver communicates, across the RF cable, with another transceiver associated with the GNSS receiver.

11. The transceiver of claim 10 wherein the GNSS antenna is connected to an antenna connector of a multi-antenna receiver to which the another transceiver is switched.

12. The transceiver of claim 1 wherein the transceiver further comprises:

a coupling with an RF connector for connecting the transceiver with the RF cable.

13. A method of operating a transceiver, the method comprising:

receiving by the transceiver (i) digital data, the digital data comprising additional information from particular sources of a plurality of sources, and converting the digital data into a converted analog signal and (ii) an analog signal and decoding the analog signal into digital synchronization signals, the analog signal being received in a first bandpass filter, the converted analog signal being received and filtered in a second bandpass filter prior to transmission thereof across an RF cable; and

establishing a two-way data communication over the RF cable between a GNSS antenna associated with the transceiver and a GNSS receiver, and transmitting the converted analog signal and the digital synchronization signals over the RF cable such that the GNSS antenna synchronizes the particular sources of the plurality of sources with a time scale associated with at least one location external to the GNSS antenna via the RF cable and the transceiver.

14. The method of claim 13 wherein the plurality of sources includes at least one inertial sensor, the inertial sensor measuring at least one of an acceleration vector and an angular velocity vector.

15. The method of claim 13 wherein the plurality of sources includes at least one atmospheric sensor, the atmospheric sensor measuring at least one of a pressure, a humidity level, and an ambient temperature at a point of receiving a GNSS signal.

16. The method of claim 13 wherein the plurality of sources include at least one magnetic sensor, the magnetic sensor measuring at least one magnetic field vector.

17. The method of claim 13 further comprising:

receiving, across the RF cable, a direct voltage signal; and

powering one or more electronic blocks associated with the GNSS antenna.