Patents
US 12638597 B2: Convergent tracking for navigation system using an update determined from subcarrier and code error
- Granted
- 2026-05-26
- Filed
- 2023-12-18 application 18543079
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An embodiment provides convergent tracking for Global Navigation Satellite System (GNSS) signals (e.g., binary offset carrier (BOC), etc.) in GNSS applications, such as positioning, navigation, timing, and guidance. The embodiment employs a situation-aware two-dimensional (2D) routing algorithm that provides fast convergence to stable tracking. Further, an embodiment may provide subcarrier phase ambiguity resolution that resolves carrier phase with assurance to support high integrity navigation, including high integrity real-time kinematic (RTK) applications. Moreover, an embodiment may provide tracking to more accurate subcarrier phase estimates. This may provide up to four times better ranging accuracy. Accordingly, an embodiment provides robust tracking performance of BOC signals under varying levels of dynamics, high jamming tolerance, more ranging accuracy, support for high integrity navigation, and support for high integrity RTK based positioning and high precision navigation and automatic landing.
Source: PTBLXML, file of 2026-05-26 (ipgb20260526.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| L3Harris Technologies, Inc. 160 patents | US company or organization | Melbourne, FL | PTBLXML, file of 2026-05-26 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Shuwu Wu | Yorba Linda, CA | PTBLXML, file of 2026-05-26 | ||
| Robert Mason Fries | Irvine, CA | PTBLXML, file of 2026-05-26 | ||
| Roy Michael Gentry | Manhattan Beach, CA | PTBLXML, file of 2026-05-26 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01S | Radio direction-finding; radio navigation; determining distance or velocity by use of radio waves; locating or presence-detecting by use of the reflection or reradiation of radio waves; analogous arrangements using other waves | G01S19/30 | PTBLXML, file of 2026-05-26 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-12-18 | Assignment Assignment of assignor's interest | WU, SHUWU signed 2023-12-12 FRIES, ROBERT MASON signed 2023-12-02 GENTRY, ROY MICHAEL signed 2023-12-15 | L3HARRIS TECHNOLOGIES, INC. MELBOURNE, FL | 65895/808 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.