EP0419425A2
Expired / Lapsed
EP
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Differential fluorescence lidar and associated detection method
Assignee: Consiglio Nazionale delle Richerche
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Filing: 1990-09-19
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Granted: —
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Expires: 2010-09-19
Abstract
Abstract The multichannel fluorescence lidar comprises a source for the emission of a laser beam, an optical receiving system to focus the backscattered radiation, an optical channels separator and means for processing the detected signals; the device comprises means (15) for forming the ratio, two by two, of the signals originating from the optical channels separator (11), and means (17, 19) for making the comparison between the values of said ratios and a series of values stored in an archive (21).
Inventors
- 👤 Giovanna Cecchi
- 👤 Luca Pantani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 02:33
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/64; G01N21/6402; G01S; G01S17/00; G01S17/88; G01S7/00; G01S7/48; G01S7/4802; G01N21/17; G01N2021/1793; G01N2021/6417; G01N2021/6421
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
A multichannel fluorescence lidar device comprising a source for the emission of a laser beam, an optical receiving system to focus the backscattered radiation, an optical channels separator and means for processing the detected signals, which device further comprises means (15) for forming the ratio, two by two, of the signals originating from said optical channels separator (11), and means (17, 19) for making the comparison between the values of said ratios and a series of values stored in an archive (21).
Claim 2
Dependent Claim
82 words
A multichannel fluorescence lidar device comprising a source for the emission of a laser beam, an optical receiving system to focus the backscattered radiation, an optical channels separator and means for processing the detected signals, which device further comprises means (15) for forming the ratio, two by two, of the signals originating from said optical channels separator (11), and means (17, 19) for making the comparison between the values of said ratios and a series of values stored in an archive (21).
Claim 3
Dependent Claim
36 words
The device as claimed in claim 1, wherein said means for forming the ratio between the signals originating from said optical channels separator comprise electronic processing means programmed to form said ratios by means of software.
Claim 4
Dependent Claim
34 words
The device as claimed in claim 1, wherein said means for forming the ratio between the signals originating from said optical channels separator comprise circuit components to form said ratio by means of hardware.
Claim 5
Independent Claim
47 words
The device as claimed in one or more of the preceding claims, wherein said means for making the comparison between the values of said ratios and a series of stored values comprise a programmed electronic processor and a multiplexer for passing the data obtained from the detection.
Claim 6
Independent Claim
30 words
The device as claimed in one or more of the preceding claims, wherein said optical channels separator comprises a matrix of CCD photodetectors which is controlled by a central unit.
Claim 7
Independent Claim
106 words
A method of remote sensing using a multichannel fluorescence lidar, comprising the steps of; stimulating the emission of fluorescence radiation from the target; collecting the fluorescence radiation emitted by the target; separating the backscattered fluorescence radiation into a plurality of channels corresponding to predetermined emission bands; and processing the signals obtained in order to obtain information concerning the target; wherein the signals obtained from the separation of the backscattered radiation have their ratio formed in order to obtain one or more values of ratios of signals, which are compared with values of ratios which are predetermined and stored, corresponding to defined targets or categories of targets.
Claim 8
Independent Claim
106 words
A method of remote sensing using a multichannel fluorescence lidar, comprising the steps of; stimulating the emission of fluorescence radiation from the target; collecting the fluorescence radiation emitted by the target; separating the backscattered fluorescence radiation into a plurality of channels corresponding to predetermined emission bands; and processing the signals obtained in order to obtain information concerning the target; wherein the signals obtained from the separation of the backscattered radiation have their ratio formed in order to obtain one or more values of ratios of signals, which are compared with values of ratios which are predetermined and stored, corresponding to defined targets or categories of targets.
Claim 9
Dependent Claim
30 words
The method as claimed in claim 6, wherein the comparison between the values of the ratios obtained from the detected signals and the stored values is made in real time.
References Cited (Backward Citations)
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