Special Issue "Advances in Remote Sensing of Space Geodesy and Atom Interferometry Development"
A special issue of Remote Sensing (ISSN 2072-4292). This special issue belongs to the section "Satellite Missions for Earth and Planetary Exploration".
Deadline for manuscript submissions: 20 February 2024 | Viewed by 195
Interests: photonics; laser; fiber laser; optics; atom interferometry; laser cooling; cold atoms
In the last 20 years, gravimetry missions have demonstrated a unique ability to monitor major climate-related changes on the Earth from space, such as quantifying the melt of large glaciers and ice sheets, global sea level rises, continental draught and major flooding events. To respond to the increasing demands of the user community for sustained mass change observations from space gravimetry at higher spatial and temporal resolutions, ESA and NASA are coordinating their activities in a cooperative mission framework called Mass change and Geosciences International Constellation (MAGIC), which is planned to evolve by exploiting Cold-Atom Interferometry (CAI) developments for accelerometer and gravity gradiometer instruments. The largest error contributor of state-of-the-art missions (e.g., GRACE-FO) is the effect of aliasing that results from the observation geometry and the spatio-temporal sampling of the gravity signal at a single location. The MAGIC mission concept is a well-designed satellite constellation that tackles this limitation. Within this architecture, the next largest error contributor is in the measurement of non-gravitational accelerations. In future realisations of MAGIC (i.e., post-2035), current accelerometers can be combined with a CAI instrument or, at a later stage, a full quantum sensor could be employed. In the latter case, the option of a CAI-based gravity gradiometer, improved by orders of magnitude with respect to that of the ESA GOCE mission, is also being studied. Improvements in the existing accelerometers, as well as the development of accelerometers based on optical detection rather than capacitive detection, may also reveal wats to enhance the measurement performance. The expected improvement in sensitivity will enable many new applications addressing user needs with respect to water management and hazard prevention, among others.
Dr. Olivier Carraz
Dr. Sergio Mottini
Manuscript Submission Information
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- cold atom interferometry
- optomechanical sensor
- electrostatic accelerometer
- gravity reference sensor