G01C 21/02
Navigation: by astronomical means
Official title: by astronomical means (G01C21/24, G01C21/26 take precedence)
G01C21/02 (Navigation: by astronomical means) appears on 268 US grants and 231 published applications in this corpus.
Search patents in G01C- Granted patents
- 268
- Published applications
- 231
- Assignees
- 147
- Inventors
- 561
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 0 |
| 2002 | 6 | 1 |
| 2003 | 3 | 4 |
| 2004 | 3 | 3 |
| 2005 | 4 | 6 |
| 2006 | 5 | 11 |
| 2007 | 3 | 5 |
| 2008 | 9 | 5 |
| 2009 | 5 | 7 |
| 2010 | 5 | 6 |
| 2011 | 5 | 4 |
| 2012 | 5 | 7 |
| 2013 | 7 | 7 |
| 2014 | 10 | 5 |
| 2015 | 7 | 15 |
| 2016 | 10 | 7 |
| 2017 | 11 | 8 |
| 2018 | 7 | 14 |
| 2019 | 14 | 27 |
| 2020 | 16 | 18 |
| 2021 | 22 | 11 |
| 2022 | 12 | 9 |
| 2023 | 9 | 12 |
| 2024 | 13 | 19 |
| 2025 | 10 | 14 |
| 2026 | 13 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- StarNAV optical sensor system29 Sep 2026US 12,749,202 B2Rensselaer Polytechnic Institute
- Imaging system and method for attitude determination11 Aug 2026US 12,705,793 B2Urugus S.A.
- Systems and methods for acquisition and tracking of unknown LEO satellite signals16 Jun 2026US 12,659,026 B2The Regents of the University of California
- Method for joint estimation of stellar atmospheric refraction and star tracker attitude2 Jun 2026US 12,644,706 B2Beijing University of Aeronautics and Astronautics
- Navigation system using celestial radio emissions26 May 2026US 12,638,291 B2Wisconsin Alumni Research Foundation
- Navigation device for an optical system for aiming and observing a scene, and method for determining an attitude for such an optical system8 Oct 2026US 2026/0309461 A1Safran Electronics & Defense
- Information processing system, information processing method, and program23 Jul 2026US 2026/0212067 A1Ispace Co., Ltd.
- Aircraft Flight Control Using Subpixel Localization4 Jun 2026US 2026/0153335 A1The Boeing Company
- Resident space object catalog management for celestial navigation30 Apr 2026US 2026/0118127 A1
- Solar Azimuth Estimation Method and System Based on Multi-Channel Feature Enhancement and Region-Aware Attention26 Mar 2026US 2026/0087667 A1Hangzhou City University
Most cited
By later US patents
- Daytime stellar imager66US 7,349,804 B2Trex Enterprises Corp. · 2008
- Techniques for optimizing an autonomous star tracker65US 5,745,869 ALockheed Missiles & Space Company, Inc. · 1998
- Daytime stellar imager57US 7,349,803 B2Trex Enterprises Corp. · 2008
- Method of attitude determination using earth and star sensors44US 5,412,574 AHughes Aircraft Company · 1995
- Spacecraft attitude determination system and method39US 6,285,927 B1Hughes Electronics Corporation · 2001