US3710335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azimuthal positioning system
Assignee: Individual
•
Filing: 1970-05-20
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Granted: 1973-01-09
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Expires: 1990-05-20
Abstract
Abstract A navigation system for providing location information by triangulation, comprising at least two optical or radio or acoustic beacons spaced apart at predetermined locations, each beacon being fixed to project a frequency-dispersed spectrum in an azimuthal arc about the beacon, the arcs from the spaced beacons overlapping in the navigational area of interest, and means for identifying and comparing the frequency received from each of the beacons at any point in the area of overlap of the arcs, including an area chart showing the beacon spectra, and necessary receiving instrumentation in some embodiments.
Inventors
- 👤 L Lepley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:55
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/16; G01S1/00; G01S1/02; G01S1/08; G01S1/44; G01S1/54; G01S1/58; G01S1/60; G01S1/72; G01S1/76; G01S1/82; G01S5/02; G01S5/08; G01S2201/00; G01S2201/01; G01S2201/07
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
95 words
A location information system comprising: at least two beacons, said beacons spaced apart at predetermined locations; each said beacon comprising a fixed continuous source projecting a fixed spectral continuum of frequency-dispersed energy through an arc centered on said source, whereby a unique frequency is continuously projected from each said source at every radial direction within a said arc; at least two of said arcs having an area of overlap; and means for identifying and comparing the unique frequencies projected within said area of overlap of the arcs, thereby providing location information relative to said beacons.
Claim 2
Dependent Claim
95 words
A location information system comprising: at least two beacons, said beacons spaced apart at predetermined locations; each said beacon comprising a fixed continuous source projecting a fixed spectral continuum of frequency-dispersed energy through an arc centered on said source, whereby a unique frequency is continuously projected from each said source at every radial direction within a said arc; at least two of said arcs having an area of overlap; and means for identifying and comparing the unique frequencies projected within said area of overlap of the arcs, thereby providing location information relative to said beacons.
Claim 3
Dependent Claim
65 words
A location information system as recited in claim 1, said means for identifying and comparing the unique frequencies including a chart marked with plural radial directions from each beacon in the area of overlap of the arcs, at least one of the radial direction markings from each beacon being identified on the chart to said unique frequency projected at that radial direction by the beacon.
Claim 4
Dependent Claim
33 words
A location information system as recited in claim 2, wherein the beacons are sources of microwave radiation, and wherein the means for identifying and comparing the unique frequencies includes frequency-sensitive microwave receiving means.
Claim 5
Dependent Claim
32 words
A location information system as recited in claim 2, wherein the beacons are acoustic sources and wherein the means for identifying and comparing the unique frequencies includes a frequency-sensitive acoustic receiving means.
Claim 6
Dependent Claim
32 words
A location information system as recited in claim 2, wherein said frequency dispersion forms a spectrum in the same azimuthal direction about each of said beacons having an area of arc overlap.
Claim 7
Dependent Claim
26 words
A location information system as recited in claim 2, wherein said frequency dispersion forms spectra in respectively opposite azimuthal directions in said area of arc overlap.
Claim 8
Dependent Claim
32 words
A location information system as recited in claim 1, wherein said frequency dispersion forms a spectrum in the same azimuthal direction about each of said beacons having an area of arc overlap.
Claim 9
Dependent Claim
26 words
A location information system as recited in claim 1, wherein said frequency dispersion forms spectra in respectively opposite azimuthal directions in said area of arc overlap.
Claim 10
Dependent Claim
98 words
A location information system comprising: at least two optical radiation beacons, said beacons spaced apart at predetermined locations: each said beacon comprising a fixed continuous source for projecting a fixed spectral continuum of frequency-dispersed energy through an arc centered on said source, whereby a unique frequency is continuously projected from each said source at every radial direction within a said arc; at least two of said arcs having an area of overlap; and means for identifying and comparing the unique frequencies projected within said area of overlap of the arcs, thereby providing location information relative to said beacons.
Claim 11
Dependent Claim
98 words
A location information system comprising: at least two optical radiation beacons, said beacons spaced apart at predetermined locations: each said beacon comprising a fixed continuous source for projecting a fixed spectral continuum of frequency-dispersed energy through an arc centered on said source, whereby a unique frequency is continuously projected from each said source at every radial direction within a said arc; at least two of said arcs having an area of overlap; and means for identifying and comparing the unique frequencies projected within said area of overlap of the arcs, thereby providing location information relative to said beacons.
Claim 12
Dependent Claim
66 words
A location information system as recited in claim 9 wherein the means for identifying and comparing the unique frequencies includes a chart marked with plural radial directions from each beacon in the area of overlap of the arcs, at least one of the radial direction markings from each beacon being identified on the chart to said unique frequency projected at that radial direction by the beacon.
Claim 13
Dependent Claim
41 words
A location system as recited in claim 9, wherein each said Fixed source is arranged to project a said continuum of frequency dispersed energy in the form of a spectrum, the azimuthal direction of dispersion being the same at each beacon.
Claim 14
Dependent Claim
66 words
A location information system as recited in claim 9 wherein each said fixed source is arranged to project a said continuum of frequency dispersed energy in the form of a spectrum, the azimuthal direction of dispersion at a first said beacon being different from the azimuthal direction of dispersion at a second said beacon, the first and second said beacons having an area of arc overlap.
Claim 15
Dependent Claim
97 words
A location information system comprising at least two optical radiation beacons, said beacons spaced apart at predetermined locations; each said beacon comprising a fixed continuous source projecting a fixed continuum of frequency-dispersed energy through an arc centered on said source, whereby a unique frequency is continuously projected from each said source at every radial direction within a said arc, at least two of said arcs having an area of overlap; and monochromator means for identifying and comparing the unique frequencies projected within said area of overlap of the arcs, thereby providing location information relative to said beacons.
Claim 16
Dependent Claim
97 words
A location information system comprising at least two optical radiation beacons, said beacons spaced apart at predetermined locations; each said beacon comprising a fixed continuous source projecting a fixed continuum of frequency-dispersed energy through an arc centered on said source, whereby a unique frequency is continuously projected from each said source at every radial direction within a said arc, at least two of said arcs having an area of overlap; and monochromator means for identifying and comparing the unique frequencies projected within said area of overlap of the arcs, thereby providing location information relative to said beacons.
References Cited (Backward Citations)
US2257320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |