Patent US3242487A successfully refreshed from Google Patents.
US3242487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detection and tracking of multiple targets
Assignee: Individual
•
Filing: 1963-12-05
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Granted: 1966-03-22
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Expires: 1983-12-05
Abstract
No abstract record available.
Inventors
- 👤 Calvin M Hammack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:55
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A METHOD OF DETERMINING THE POSITION OF EACH MOVING OBJECT OF A GROUP OF SUCH MOVING OBJECTS RELATIVE TO OTHER OBJECTS OF THE GROUP COMPRISING THE FOLLOWING ACTS: (1) ESTABLISHING A SET OF REFERENCE POINTS SEPARATED FROM EACH OTHER BY DISTANCES LARGE COMPARED TO THE DIMENSIONS OF THE TARGET GROUP; (2) ASCERTAINING THE POSITIONS OF THE SAID REFERENCE POINTS AT EACH OF A SET OF SIGNIFICANT EPOCHS; (3) ASCERTAINING THE POSITION OF THE GROUP OF MOVING OBJECTS RELATIVE TO THE POSITIONS OF THE REFERENCE POINTS AT EACH OF THE SAID SIGNIFICANT EPOCHS; (4) MEASURING CHANGES OCCURING IN GEOMETRICAL RELATIONSHIPS BETWEEN THE POSITIONS OF SAID MOVING OBJECTS AND THE POSITIONS OF SAID REFERENCE POINTS, SAID CHANGES OCCURING BETWEEN SAID EPOCHS AND EACH SAID RELATIONSHIP EMBRACING THE POSITIONS OF TWO OR MORE OF SAID MOVING OBJECTS; (5) COMPUTING THE POSITIONS OF THE MOVING OBJECTS RELATIVE TO EACH OTHER USING THE INFORMATION SUPPLIED FROM THE ABOVE STEPS BY SOLVING A SET OF SIMULTANEOUS EQUATIONS, SAID SET COMPRISING AS KNOWN QUANTITIES THE VALUES OF THE QUANTITIES MEASURED IN (4).
Claim 2
Independent Claim
175 words
A METHOD OF DETERMINING THE POSITION OF EACH MOVING OBJECT OF A GROUP OF SUCH MOVING OBJECTS RELATIVE TO OTHER OBJECTS OF THE GROUP COMPRISING THE FOLLOWING ACTS: (1) ESTABLISHING A SET OF REFERENCE POINTS SEPARATED FROM EACH OTHER BY DISTANCES LARGE COMPARED TO THE DIMENSIONS OF THE TARGET GROUP; (2) ASCERTAINING THE POSITIONS OF THE SAID REFERENCE POINTS AT EACH OF A SET OF SIGNIFICANT EPOCHS; (3) ASCERTAINING THE POSITION OF THE GROUP OF MOVING OBJECTS RELATIVE TO THE POSITIONS OF THE REFERENCE POINTS AT EACH OF THE SAID SIGNIFICANT EPOCHS; (4) MEASURING CHANGES OCCURING IN GEOMETRICAL RELATIONSHIPS BETWEEN THE POSITIONS OF SAID MOVING OBJECTS AND THE POSITIONS OF SAID REFERENCE POINTS, SAID CHANGES OCCURING BETWEEN SAID EPOCHS AND EACH SAID RELATIONSHIP EMBRACING THE POSITIONS OF TWO OR MORE OF SAID MOVING OBJECTS; (5) COMPUTING THE POSITIONS OF THE MOVING OBJECTS RELATIVE TO EACH OTHER USING THE INFORMATION SUPPLIED FROM THE ABOVE STEPS BY SOLVING A SET OF SIMULTANEOUS EQUATIONS, SAID SET COMPRISING AS KNOWN QUANTITIES THE VALUES OF THE QUANTITIES MEASURED IN (4).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |