US3719948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Increased field of view of detector array
Assignee: Bendix Corp
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Filing: 1970-10-08
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Granted: 1973-03-06
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Expires: 1990-10-08
Abstract
Abstract A system for increasing the field of view of an array of detectors is described. The system also unambiguously positions the target with respect to the normal to the array. These advantages are obtained by periodically linearly moving, or vibrating, the array along an axis within the plane of the array. The frequency of vibration is constant and is selected for convenient detection and measurement. The amplitude of vibration is related to the spacing of the detectors within the array so that expanding the equation describing the field of view of a single detector as a Taylor series along the axis of vibration yields an expression containing frequency components which are readily detected and separated to thereby effectively double the density of detectors within the array.
Inventors
- 👤 R Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:23
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/26; H01Q3/2605; G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
101 words
A system for effectively increasing the field of view of an array of detectors comprising: an array of detector elements systematically arranged and uniformly spaced in a detection plane; means for periodically moving said array along an axis of movement within said detection plane and through a constant amplitude related to said uniform spacing of said detector elements; and utilization means receiving the outputs of said detector elements and yielding an output indicative of an array wherein the spacing between the successive detector elements is less than the physical spacing between successive elements in said array along the axes of movement.
Claim 2
Independent Claim
101 words
A system for effectively increasing the field of view of an array of detectors comprising: an array of detector elements systematically arranged and uniformly spaced in a detection plane; means for periodically moving said array along an axis of movement within said detection plane and through a constant amplitude related to said uniform spacing of said detector elements; and utilization means receiving the outputs of said detector elements and yielding an output indicative of an array wherein the spacing between the successive detector elements is less than the physical spacing between successive elements in said array along the axes of movement.
Claim 3
Independent Claim
101 words
A system for effectively increasing the field of view of an array of detectors comprising: an array of detector elements systematically arranged and uniformly spaced in a detection plane; means for periodically moving said array along an axis of movement within said detection plane and through a constant amplitude related to said uniform spacing of said detector elements; and utilization means receiving the outputs of said detector elements and yielding an output indicative of an array wherein the spacing between the successive detector elements is less than the physical spacing between successive elements in said array along the axes of movement.
Claim 4
Independent Claim
101 words
A system for effectively increasing the field of view of an array of detectors comprising: an array of detector elements systematically arranged and uniformly spaced in a detection plane; means for periodically moving said array along an axis of movement within said detection plane and through a constant amplitude related to said uniform spacing of said detector elements; and utilization means receiving the outputs of said detector elements and yielding an output indicative of an array wherein the spacing between the successive detector elements is less than the physical spacing between successive elements in said array along the axes of movement.
Claim 5
Dependent Claim
45 words
The system of claim 1 wherein said detector elements are arranged along orthogonal axes and said axis of movement is parallel to one of said orthogonal axes; and said detector elements are spaced at a distance of gamma in the directions of said orthogonal axes.
Claim 6
Dependent Claim
26 words
The system of claim 2 wherein the periodic movement of said array occurs at a constant frequency and said constant amplitude is equal to gamma /2.
Claim 7
Dependent Claim
27 words
The system of claim 1 wherein said detectors are responsive to radiation having a frequency omega o and said periodic movement occurs at a frequency omega s.
Claim 8
Dependent Claim
73 words
The system of claim 4 wherein said utilization means includes a plurality of filters which are individually responsive to a frequency of omega o + omega s, omega o - omega s and omega o; and further including means for averaging said omega o + omega s frequency and said omega o - omega s frequency to give an output indicative of a position located between two successive detector elements within said array.
Claim 9
Dependent Claim
67 words
The system of claim 5 wherein said utilization means further includes; comparing means for comparing the phase of the detector outputs with the phase of the periodic movement omega s; and visual display means for displaying the outputs of said detector elements to thereby give an unambiguous location of a target within the main, the upper or the lower side lobes of the pattern of said array.
Claim 10
Dependent Claim
45 words
The system of claim 5 wherein said detector elements are arranged along orthogonal axes and said axes of movement is parallel to one of said orthogonal axes; and said detector elements are spaced at a distance of gamma in the directions of said orthogonal axes.
Claim 11
Dependent Claim
29 words
The system of claim 7 wherein the periodic movement of said array occurs at a constant frequency of omega s and said constant amplitude is equal to gamma /2.
Claim 12
Dependent Claim
70 words
The system of claim 8 wherein said utilization means further includes means for gEnerating said frequency omega s; means for vibrating said array at said omega s frequency; and means for separating and comparing the phase of said + omega s frequency and said - omega s frequency with said omega s frequency from said means for generating to determine which of said side lobes said target is positioned on.
References Cited (Backward Citations)
US2861264A
Cited
US3412405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |