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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: closed (20 February 2024) | Viewed by 1045

Special Issue Editors


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Guest Editor
European Space Agency, Noordwijk, The Netherlands
Interests: photonics; laser; fiber laser; optics; atom interferometry; laser cooling; cold atoms

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Guest Editor
Thales Alenia Space Italia, Torino, Italy
Interests: optical design; optics and photonics; photonics lenses; optics and lasers; optical metrology fiber optics; optical fibers; optical sensing

Special Issue Information

Dear Colleagues,

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
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Remote Sensing is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • cold atom interferometry
  • optomechanical sensor
  • electrostatic accelerometer
  • gravity reference sensor
  • GOCE
  • GRACE
  • MAGIC
  • geodesy
  • gravimetry

Published Papers (1 paper)

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Research

25 pages, 4262 KiB  
Article
Colocation in Time and Space of High-Precision Two-Way Optical and Microwave Observations for Calibration of a Microwave Ranging Link—The ACES Mission Case
by Peter Vollmair, Anja Schlicht and Urs Hugentobler
Remote Sens. 2023, 15(20), 4897; https://doi.org/10.3390/rs15204897 - 10 Oct 2023
Viewed by 713
Abstract
The ACES mission of the European Space Agency combines optical and microwave-based geodetic observation techniques with highly accurate atomic clocks to achieve a new level of accuracy for geodesy and fundamental physics applications. In addition, the combination of two high-precision measurement techniques provides [...] Read more.
The ACES mission of the European Space Agency combines optical and microwave-based geodetic observation techniques with highly accurate atomic clocks to achieve a new level of accuracy for geodesy and fundamental physics applications. In addition, the combination of two high-precision measurement techniques provides an even more exciting insight into their errors. Fundamental physics is particularly interested in experiments that require high precision between the results of the successive passes of a satellite. An example of such an experiment is the determination of gravitational redshift. Geodesy applications, in contrast, require both high accuracy and precision. Especially for applications like precise ranging or time synchronization, all possible error influences must be characterized and determined with high precision. Therefore, electronic delays of microwave link terminals pose a challenge to achieving high accuracy. They must, therefore, be calibrated, and the stability of the electronic delays must be monitored. While optical observation techniques can be calibrated sufficiently on the ground, the calibration of microwave measurements before a launch is not precise enough, and continuous monitoring is also not possible. In this study, four calibration methods were tested, all based on colocating optical and microwave measurements onboard a satellite and on the ground. The results of two methods achieved the required accuracy of 100 ps for time synchronization, with a mean error and standard deviation of better than 4 ps and 55 picoseconds, respectively. Correlations between the measured parameters were identified, and the impact of the different approaches on accuracy was investigated. It will be shown that the satellite-based colocation of two different geodetic observation techniques has clear advantages, and the calibration results achieved the required accuracy for geodetic applications in this simulation study. Full article
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