G01S 5/0246
Involving frequency difference of arrival or doppler measurements
Official title: {involving frequency difference of arrival or Doppler measurements (G01S5/02685 takes precedence)}
G01S5/0246 (Involving frequency difference of arrival or doppler measurements) appears on 172 US grants and 171 published applications in this corpus.
Search patents in G01S- Granted patents
- 172
- Published applications
- 171
- Assignees
- 102
- Inventors
- 380
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 9 | 0 |
| 2002 | 6 | 6 |
| 2003 | 6 | 4 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 2 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 2 | 0 |
| 2013 | 1 | 3 |
| 2014 | 3 | 5 |
| 2015 | 4 | 3 |
| 2016 | 0 | 4 |
| 2017 | 6 | 11 |
| 2018 | 7 | 8 |
| 2019 | 9 | 12 |
| 2020 | 13 | 8 |
| 2021 | 4 | 16 |
| 2022 | 10 | 16 |
| 2023 | 11 | 29 |
| 2024 | 18 | 17 |
| 2025 | 28 | 10 |
| 2026 | 10 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Geolocation method for detection and tracking of maneuvering emitters25 Aug 2026US 12,716,985 B2Lockheed Martin Corporation
- Frequency modulated continuous wave signal-based positioning in new radio25 Aug 2026US 12,717,016 B2QUALCOMM Incorporated
- Doppler based cellular navigation system11 Aug 2026US 12,704,649 B2Honeywell International Inc.
- User equipment-based (UE-based) positioning based on self-radio frequency fingerprint (self-RFFP)7 Jul 2026US 12,674,858 B2QUALCOMM Incorporated
- Doppler tracking for signals of opportunity using rate-line detection28 Apr 2026US 12,613,348 B2General Dynamics Mission Systems, Inc.
- Bluetooth ranging correction method and apparatus, initiator, and medium1 Oct 2026US 2026/0299115 A1Kunshan Telink Semiconductor Co., Ltd.
- System and method for communicating17 Sep 2026US 2026/0276774 A1Denso Corporation
- User equipment-based (ue-based) positioning based on self-radio frequency fingerprint (self-rffp)13 Aug 2026US 2026/0235717 A1QUALCOMM Incorporated
- Doppler measurement6 Aug 2026US 2026/0227524 A1QUALCOMM Incorporated
- Methods and apparatus for independent non-terrestrial air traffic surveillance23 Jul 2026US 2026/0211076 A1
Most cited
By later US patents
- Applications processor including a database system, for use in a wireless location system435US 7,271,765 B2TruePosition, Inc. · 2007
- Calibration for wireless location system379US 6,184,829 B2TruePosition, Inc. · 2001
- Method and system for synchronizing receiver systems of a wireless location system298US 6,351,235 B1TruePosition, Inc. · 2002
- Centralized database system for a wireless location system200US 6,317,604 B1TruePosition, Inc. · 2001
- Diversified doppler for single platform geolocation200US 9,007,262 B1Leidos, Inc. · 2015