System and method for remote sensing and/or analyzing spectral properties of targets and/or chemical speicies for detection and identification thereof
First Claim
1. A system for remote sensing and analyzing spectral properties of at least one target and/or chemical species, said system comprising:
- a light gathering device that collects and focuses incoming radiation emitted and/or absorbed and/or scattered by the target and/or chemical species to be analyzed;
a folding optical element for directing said collected and focused radiation from said light gathering device to at least one of a plurality of detectors;
at least one spectrally discriminating optical element in front of at least some of said detectors for spectrally resolving said collected radiation;
said detectors, in relative movement with said folding optical element, producing an output signal; and
a driving device to produce said relative movement;
a device or method to monitor phase and frequency of the relative movement; and
a demodulation device, synchronous with said driving device, to demodulate said output signal produced by said detectors.
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Accused Products
Abstract
A method and a low-cost, robust and simple system for remote sensing and analyzing spectral properties of targets as a means to detect and identify them is introduced. The system can be highly portable but is usable in fixed locations or combination thereof. An aspect of the method and system includes the capability to distribute, modulate, aperture and spectrally analyze radiation emitted or absorbed by a volumetric target chemical species (solid, liquid or gas) or a target surface. Radiation is first collected by a single light gathering device, such as a lens, telescope, or mirror, and then distributed to multiple detectors through spectrally discriminating components and if desired through apertures to achieve this desired detection and identification.
30 Citations
106 Claims
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1. A system for remote sensing and analyzing spectral properties of at least one target and/or chemical species, said system comprising:
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a light gathering device that collects and focuses incoming radiation emitted and/or absorbed and/or scattered by the target and/or chemical species to be analyzed;
a folding optical element for directing said collected and focused radiation from said light gathering device to at least one of a plurality of detectors;
at least one spectrally discriminating optical element in front of at least some of said detectors for spectrally resolving said collected radiation;
said detectors, in relative movement with said folding optical element, producing an output signal; and
a driving device to produce said relative movement;
a device or method to monitor phase and frequency of the relative movement; and
a demodulation device, synchronous with said driving device, to demodulate said output signal produced by said detectors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A system for remote sensing and analyzing spectral properties of at least one target and/or chemical species, said system comprising:
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a light gathering device that collects, focuses, and directs incoming radiation emitted and/or absorbed and/or scattered by the target and/or chemical species to be analyzed to one of a plurality of detectors;
at least one spectrally discriminating optical element in front of at least some of said detectors for spectrally resolving said collected radiation;
said detectors, in relative movement with said light gathering device, producing an output signal;
a driving device to produce said relative movement between said light gathering device and said detectors;
a device or method to monitor phase and frequency of the relative movement; and
a demodulation device, synchronous with said driving device, to demodulate said output signal produced by said detectors. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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73. A method for remote sensing and analyzing spectral properties of at least one target and/or chemical species, said method comprising:
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collecting and focusing incoming radiation emitted and/or absorbed and/or scattered by the target and/or chemical species to be analyzed, said collecting and focusing being conducted from a gathering location;
directing said focused radiation, said directing being conducted at a directing location;
spectrally analyzing said collected radiation at a spectral analysis location, said spectral analysis produces spectral signature that can be used to identify target;
detecting said directed and spectrally analyzed radiation at a detecting location, wherein said directing location and said detecting location is in relative movement from one another, said detection producing an output signal;
monitoring the phase and frequency of the relative movement; and
demodulating said output signal. - View Dependent Claims (74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90)
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91. A method for remote sensing and analyzing spectral properties of at least one target and/or chemical species, said method comprising:
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collecting, focusing, and directing incoming radiation emitted and/or absorbed and/or scattered by the target and/or chemical species to be analyzed, said collecting, focusing, and directing being conducted from a gathering location;
spectrally analyzing said collected radiation at a spectral analysis location, said spectral analysis produces spectral signature that can be used to identify target;
detecting said directed and spectrally analyzed radiation at a detecting location, wherein said gathering location and said detecting location is in relative movement from one another, said detection producing an output signal;
monitoring the phase and frequency of the relative movement; and
demodulating said output signal. - View Dependent Claims (92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106)
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Specification