Compact Hyperspectral Infrared Sounding Instrument Mission

The MetNet Space Consortium is currently developing a network of LEO small weather satellite constellations including imagers, upper atmosphere dynamics, microwave, space weather, and most importantly Hyperspectral IR Sounders. The proposed Compact Hyperspectral Infrared Sounding Instrument (CHISI) mission would provide one of the top observations needed for improving weather forecasts through temperature profiles, moisture profiles, and atmospheric motion vector (AMV) 3D winds. Brandywine’s proposed solution is to provide this global, high resolution, hyperspectral infrared (LWIR) sounding data through a resilient low-cost network of 24 to 48 small LEO satellites, and later three (3) dedicated GEO small satellites. The LEO constellation will provide high-resolution, global coverage, while the GEO satellites provide rapid scans of dynamic events such as storms and hurricanes. By taking advantage of mature TRL-9 interferometer technology, it may be possible to achieve payload readiness within 18-months after funding. In this proposal, we shall review instrument performance and weather data products with the sponsor, provide a mission design, and determine compatibility and requirements for implementation on a LEO or GEO spacecraft constellation.