Filter Incidence Narrowband Infrared Spectrometer

A spectrometer capable of detecting and mapping a target atmospheric gas by hyperspectral imaging in low Earth orbit, using the principle that matter can be identified by the spectrum of electromagnetic radiation it emits or reflects, with different substances emitting and reflecting different wavelengths of radiation.

Problem

Although spectrometers exist which are capable of detecting gases in Earth’s atmosphere, they are not suited for atmospheric mapping from a miniature payload. Some lack the resolution or operating efficiency required for accurate mapping. Others are too large to deploy using modern nanosatellite technology.

Solution

A power-efficient multi-wavelength spectrometer has been developed for mapping applications and compatible with a small payload. Instead of cryogenic cooling, which demands too much power and mass, the invention uses an efficient thermoelectric cooler. With a small physical footprint, the invention is sized for deployment in off-the-shelf CubeSat nanosatellites. The spectrometer’s camera remains at a fixed orientation with respect to the ground and collects images at a fixed frame rate while flying over the target scene. Using a narrow-band filter in front of the lens, the camera identifies the location and concentration of a target gas in the atmosphere.

Benefits

The use of the system will help detect major gas leaks soon after they occur. Detecting and repairing a gas leak quickly can help to reduce atmospheric pollution and save money for the entity suffering the leak. Additionally, it will advance our understanding of the balance of greenhouse gases, such as methane, in Earth’s atmosphere.

Applications

When applied to a constellation of small satellites in low Earth orbit, the invention may be used to detect major gas leaks over any continental land mass within four days of onset.

Contact

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Questions about this technology including licensing availability can be directed to:

Alan Edwards, MA, JD
Manager, Technology Transfer Services
(435) 797-2328 alan.edwards@usu.edu

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USU ID C18024