G01C 21/025
With the use of startrackers
Official title: {with the use of startrackers}
G01C21/025 (With the use of startrackers) appears on 178 US grants and 148 published applications in this corpus.
Search patents in G01C- Granted patents
- 178
- Published applications
- 148
- Assignees
- 103
- Inventors
- 390
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 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 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 0 |
| 2002 | 5 | 1 |
| 2003 | 3 | 3 |
| 2004 | 3 | 2 |
| 2005 | 1 | 5 |
| 2006 | 4 | 8 |
| 2007 | 2 | 3 |
| 2008 | 6 | 3 |
| 2009 | 3 | 3 |
| 2010 | 3 | 4 |
| 2011 | 5 | 3 |
| 2012 | 3 | 3 |
| 2013 | 4 | 4 |
| 2014 | 4 | 4 |
| 2015 | 4 | 11 |
| 2016 | 6 | 5 |
| 2017 | 8 | 4 |
| 2018 | 5 | 7 |
| 2019 | 5 | 17 |
| 2020 | 12 | 15 |
| 2021 | 16 | 7 |
| 2022 | 10 | 6 |
| 2023 | 5 | 9 |
| 2024 | 11 | 10 |
| 2025 | 5 | 8 |
| 2026 | 7 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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.
- Method for joint estimation of stellar atmospheric refraction and star tracker attitude2 Jun 2026US 12,644,706 B2Beijing University of Aeronautics and Astronautics
- Apparatus and method for celestial navigation using region of interest subsampling10 Mar 2026US 12,571,634 B2Honeywell International Inc.
- Hybrid inertial/stellar navigation method with harmonization performance indicator3 Mar 2026US 12,566,066 B2Safran Electronics & Defense
- 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
- Star map identification method based on composite calibration star grid pattern29 Jan 2026US 2026/0029234 A1Xi'an Institute of Optics and Precision Mechanics of Cas
- Anisotropic Aperture Star Camera Systems and Methods18 Dec 2025US 2025/0382072 A1Planet Labs Pbc
- Navigation initialization with a celestial navigation system20 Nov 2025US 2025/0354813 A1Honeywell International Inc.
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