GNSS receiver positioning system

Patent metadata

Field	Value
Publication number	US-9612341-B2
Application number	US-201314134437-A
Country	US
Kind code	B2
Filing date	Dec 19, 2013
Priority date	Dec 28, 2012
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

A method of extracting pseudorange information using a cellular device. A Global Navigation Satellite System (GNSS) chipset which is physically remote from a cellular device is accessed which provides raw GNSS observables information based upon signals received from a circularly polarized GNSS antenna. The raw GNSS observables information is wirelessly transmitted from the GNSS chipset to the cellular device. The raw GNSS observables information is extracted by a processor of the cellular device. The raw GNSS observables information, in addition to GNSS corrections from at least one correction source, is used by the processor to determine a position of the circularly polarized GNSS antenna.

First claim

What is claimed is:

1. A method of extracting pseudorange information using a mobile cellular device, the method comprising:
accessing a Global Navigation Satellite System (GNSS) chipset which is physically remote from the mobile cellular device, wherein said GNSS chipset provides raw GNSS observables based upon signals received from a circularly polarized GNSS antenna;
wirelessly transmitting the raw GNSS observables from said GNSS chipset to said mobile cellular device;
extracting the raw GNSS observables by a processor of said mobile cellular device;
receiving via a wireless transmission, at the mobile cellular device, GNSS corrections from at least one correction source that is separate from the mobile cellular device and the GNSS chipset; and
using, by said processor, the raw GNSS observables, in addition to the GNSS corrections, to determine a position of said circularly polarized GNSS antenna.

2. The method of claim 1 wherein said processor is utilized as a primary processor of said mobile cellular device.

3. The method of claim 1 wherein said raw GNSS observables comprise carrier phase information.

4. The method of claim 1 wherein said raw GNSS observables comprise Doppler shift information.

5. The method of claim 1 wherein said raw GNSS observables comprise pseudorange information.

6. The method of claim 5 further comprising:
smoothing the pseudorange information to create smoothed pseudorange information using smoothing logic of said mobile cellular device.

7. The method of claim 6 further comprising:
smoothing the pseudorange information based on real carrier phase information that is derived based on the carrier phase information using real carrier phase logic of said mobile cellular device.

8. The method of claim 6 further comprising:
correcting said smoothed pseudorange information to create corrected pseudoranges using correcting logic of said mobile cellular device.

9. The method of claim 8 further comprising:
creating the corrected pseudoranges based on one or more types of pseudorange corrections received by said mobile cellular device, said pseudorange corrections selected from a group consisting of Differential Global Positioning System (DGPS), Precise Point Positioning (PPP), Real Time Kinematic (RTK), and RTX.

10. The method of claim 6 further comprising:
accessing Wide Area Augmentation System (WAAS) pseudorange corrections using accessing logic of said mobile cellular device;
storing the WAAS pseudorange corrections in a memory device of said mobile cellular device;
accessing the smoothed pseudorange information and the WAAS pseudorange corrections using pseudorange information processing logic of said mobile cellular device; and
determining a position fix of said circularly polarized GNSS antenna using the pseudorange information processing logic based on the smoothed pseudorange information and the WAAS pseudorange corrections using said processor.

11. The method of claim 5 further comprising:
determining whether to apply any improvements to the pseudorange information using position accuracy improvement determination logic of said mobile cellular device; and
determining one or more improvements to be applied to the pseudorange information.

12. The method of claim 1 further comprising:
disposing said GNSS chipset, said circularly polarized GNSS antenna, and a wireless communication component in a housing of a receiving component which is separate from said mobile cellular device.

13. The method of claim 12 further comprising:
coupling said receiving component with an article of clothing.

14. The method of claim 13 wherein said article of clothing comprises a solar panel configured to generate electricity, said method further comprising:
using said solar panel to recharge a battery disposed within said receiving component.

15. The method of claim 12 further comprising:
disposing said receiving component with a support pole used to locate a point on the ground.

16. The method of claim 12 further comprising:
disposing said receiving component upon a moveable traffic management device.

17. The method of claim 1 wherein said GNSS chipset comprises an abbreviated feature set GNSS chipset.

18. The method of claim 1 wherein said GNSS chipset is configured to process at least one of an L1 GNSS signal and an L2C GNSS signal.

19. The method of claim 1 wherein the GNSS corrections from said at least one correction source are not contained in a GNSS signal.

20. A non-transitory computer readable storage medium having computer readable instructions stored thereon for causing a computer system to perform a method of extracting pseudorange information using a mobile cellular device, the method comprising:
accessing a Global Navigation Satellite System (GNSS) chipset which is physically remote from the mobile cellular device, wherein said GNSS chipset provides raw GNSS observables based upon signals received from a circularly polarized GNSS antenna;
wirelessly transmitting the raw GNSS observables from said GNSS chipset to said mobile cellular device;
extracting the raw GNSS observables by a processor of said mobile cellular device;
receiving via a wireless transmission, at the mobile cellular device, GNSS corrections from at least one correction source that is separate from the mobile cellular device and the GNSS chipset; and
using by said processor, the raw GNSS observables, in addition to the GNSS corrections from at least one correction source, to determine a position of said circularly polarized GNSS antenna.

21. The non-transitory computer readable storage medium of claim 20 wherein said processor is utilized as a primary processor of said mobile cellular device.

22. The non-transitory computer readable storage medium of claim 20 wherein said raw GNSS observables comprise carrier phase information.

23. The non-transitory computer readable storage medium of claim 20 wherein said raw GNSS observables comprise Doppler shift information.

24. The non-transitory computer readable storage medium of claim 20 wherein said raw GNSS observables comprise pseudorange information.

25. The non-transitory computer readable storage medium of claim 24 wherein said method further comprises:
smoothing the pseudorange information to create smoothed pseudorange information using smoothing logic of said mobile cellular device.

26. The non-transitory computer readable storage medium of claim 25 wherein said method further comprises:
smoothing the pseudorange information based on real carrier phase information that is derived based on the carrier phase information using real carrier phase logic of said mobile cellular device.

27. The non-transitory computer readable storage medium of claim 25 wherein said method further comprises:
correcting said smoothed pseudorange information to create corrected pseudoranges using correcting logic of said mobile cellular device.

28. The non-transitory computer readable storage medium of claim 27 wherein said method further comprises:
creating the corrected pseudoranges based on one or more types of pseudorange corrections received by said mobile cellular device, said pseudorange corrections selected from a group consisting of Differential Global Positioning System (DGPS), Precise Point Positioning (PPP), Real Time Kinematic (RTK), and RTX.

Assignees

• Trimble Navigation Ltd
• Trimble Inc

Inventors

• Large Peter
• Rudow Richard
• Wold Robert
• Kasirajan Venkateswaran
• Janky James M

Classifications

• G01S19/43

  using carrier phase measurements, e.g. kinematic positioning; using long or short baseline interferometry · CPC title

• G01S19/41 Primary

  Differential correction, e.g. DGPS [differential GPS] · CPC title