Multispectral active remote sensing without narrowband optical filters
AssigneeITT Manufacturing Enterprises, Inc.
InventorsMichael E. Dobbs, D. Allan Roberts
Life of this patent
Estimating the term…
Abstract
A remote platform obtaining a spectrum of one or more locations by moving the platform to sequentially illuminating the locations with different wavelengths of radiation. The different wavelengths of radiation reflected from the locations may be sequentially detected and converted into data. Spectra of the locations may be assembled from the data that was sequentially collected as the platform moved.
Claims27
An active system for obtaining a multispectral image of a target, comprising:
- a plurality of sources configured to emit radiation toward different locations on the target, at least two of the plurality of sources emitting radiation of different wavelengths;
- a plurality of detectors corresponding to the plurality of sources and oriented toward the different locations on the target, at least two of the plurality of detectors being configured to detect the radiation of different wavelengths;
- and
- a processor configured to construct spectra of the different locations on the target from data obtained by the plurality of detectors as the system moves relative to the target.
A mobile remote sensing platform, comprising:
- a first source having a first field of view and being configured to emit radiation of a first wavelength;
- a first detector having a field of view that overlaps the first field of view and being configured to detect the radiation of the first wavelength;
- a second source having a second field of view that is separate from the first field of view and being configured to emit radiation of a second wavelength;
- and
- a second detector having a field of view that overlaps the second field of view and being configured to detect the radiation of the second wavelength.
A method for constructing a spectrum, comprising:
- emitting first and second wavelengths of radiation toward first and second locations, respectively;
- detecting the first and second wavelengths of radiation respectively reflected from the first and second locations at a first time;
- emitting the first and second wavelengths of radiation toward the second location and a third location, respectively;
- detecting the first and second wavelengths respectively reflected from the second and third locations at a second time;
- and
- constructing a spectrum for the second location using the wavelengths of radiation detected at the first and second times.
A method for obtaining a spectrum of a location by a platform, comprising:
- emitting radiation of a first wavelength toward the location;
- detecting radiation of the first wavelength reflected from the location;
- changing one or more fields of view of radiation sources within the platform;
- emitting radiation of a second wavelength toward the location;
- detecting radiation of the second wavelength reflected from the location;
- and
- assembling a spectrum of the location using the detected radiation of the first and second wavelengths.
A method for obtaining a spectrum of a location by a remote platform, comprising:
- sequentially illuminating the location with different wavelengths of radiation by moving the platform;
- sequentially detecting the different wavelengths of radiation reflected from the location and converting the different detected wavelengths into data;
- and
- assembling a spectrum of the location from the data that was sequentially collected.
Dependencies are inferred from the claim text.