Compact Polarized Limb Sounder with Optimal Sub-millimeter to THz Channels for Mesosphere and Lower Thermosphere (MLT) Temperature, Wind and Atomic/Molecular Density Sounding (CPLS)

This project proposes to develop the foundational science and instrument parameters for a dual-use instrument concept - Compact Polarized Limb Sounder (CPLS) - to address the critical needs of atmospheric measurements in the Earth’s Mesosphere and Lower Thermosphere (MLT) and in future planetary atmosphere exploration (e.g., Mars). The envisioned CPLS can provide simultaneous, high-accuracy profiles of temperature, Doppler wind, and atmospheric density (e.g., atomic and molecular oxygen) soundings in the 75 - 150 km altitude range, utilizing optimal sub-millimeter to THz channels. The ultimate goal is to enable 4D monitoring of the MLT atmosphere, which can be assimilated into global models for accurate predictions of satellite orbits, space debris re-entry, and satellite-to-ground communication. The dual-use instrument technology will directly benefit U.S. national security and economic prosperity, and future exploration of Mars and operation under its highly variable atmosphere. The proposed study will leverage and advance Goddard’s millimeter (mm) and submm-wave technology and global model capability for new NASA’s challenges. The proposed goal aligns with PBR’s space weather program objectives for “improving space weather forecasting” and “building deeper relationships with the commercial sector to enhance the nation’s preparedness for space weather” through providing a cost-effective smallsat mission concept and synergy study with GNSS observations.

Develops Compact Passive Limb Sounder (CPLS) for measuring mesosphere/lower thermosphere (MLT); Leverages existing high-TRL subcomponents for small SWaP-C instrument concept; Creates agile instrument forward simulator for thermospheric monitoring

This is a mature technology (TRL 7+) — the realistic path in is usually NASA's Technology Transfer Program: licensing an existing NASA patent, or a Space Act Agreement to use NASA facilities/expertise directly. NASA also runs a startup licensing program with no upfront fee for companies formed to commercialize a specific NASA technology.

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