Advances in Satellite Altimetry
A special issue of Remote Sensing (ISSN 2072-4292).
Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 44894
Special Issue Editors
Interests: geodesy; satellite positioning, navigation; remote sensing; altimetry; calibration/validation; data analysis; sea level change; metrology; statistical process control
Special Issues, Collections and Topics in MDPI journals
Interests: satellite geodesy; astronomy and satellite positioning; satellite altimetry; coastal altimetry and its applications; satellite altimetry retracking algorithms; sea level rise; remote sensing; satellite geodesy in natural hazard mitigation
Special Issues, Collections and Topics in MDPI journals
Interests: earth observation; geodesy; geoid; oceanography; sea level; ocean dynamics; hydrology; river discharge; cryosphere; climate change; water cycle; GOCE; CryoSat; Sentinel-3; Sentinel-6; Sentinel-3NG-Topo; CRISTAL; MAGIC/NGGM
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
For more than 40 years, satellite altimeters have observed the heights of the sea level, rivers, lakes, ice, sea ice, freeboard, etc., in respect to the center of the mass of the Earth, as well as significant wave height (SWH) and wind speed over ocean. After the launch of the SEASAT altimeter in 1978, new technology and applications have emerged and expanded tremendously. Altimetry satellites, such as Sentinel-6, Sentinel-3, CryoSat-2, Jason-3, HY-2, Envisat, SARAL/AltiKa, IceSat-2, etc., observe and practically realize ranges by measuring time differences between the transmission and reception of an electromagnetic wave or photon. Earth surface heights are, thus, measured from space-borne instruments using radar or laser signals at an altitude of 800–1300 km with an accuracy of less than ± 1cm. New-generation sensors operate at different signal frequencies (Ku-band, Ka-Band and laser) and implement various measurement principles of pulse-limited, delay–Doppler (unfocused or fully focused), also called synthetic aperture radar (SAR), and SAR interferometric (with two antennas) altimetry.
Altimetry missions monitor the sea level, ocean dynamics, coastal regions, ice sheets, sea ice, inland waters (rivers, lakes, reservoirs, wetlands and discharge/runoff), terrain elevation, soil moisture and the marine geoid globally with a revisit (or non-revisit) period. Many of these observed parameters of the Earth’s surface constitute essential variables for monitoring climate change. Nonetheless, to understand and predict climate variability and change, Earth satellites and observing systems have to generate data records of a sufficient length, consistency, continuity and stability. With the European Copernicus Programme satellite altimetry moving into its operational phase with Sentinel-3 and Sentinel-6, a new principle of fiducial reference measurement systems has arisen to monitor the quality for data produced with metrology standards, to properly and seamlessly archive and distribute the retained data, and, most importantly, to keep a close track of the performance of observing systems along with their smooth integration of different satellite products.
In this Special Issue of Advances in Satellite Altimetry, we invite researchers and engineers from all disciplines to submit manuscripts presenting recent advances in the field of radar and laser altimetry, including recent and future altimetry missions (e.g., Sentinel-6 MF, ICESat, SWOT, Sentinel-3 Next Generation, CRISTAL, Quanlan, HY-2, etc.), their processing algorithms, calibration/validation and their applications and encourage the submission of review manuscripts exploiting the historic altimetry records and their applications in the spatio-temporal monitoring of Earth’s systems on all scales.
Dr. Stelios Mertikas
Dr. Xiaoli Deng
Dr. Jérôme Benveniste
Guest Editors
Manuscript Submission Information
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Keywords
- radar and laser altimetry
- satellite altimetry
- delay–Doppler (SAR) altimetry
- interferometry
- transponder, sea surface and lake surface calibration and validation
- fiducial reference systems
- remote sensing of ocean, inland water, cryosphere and mountain glaciers
- integration of altimetry with other satellite sensors
- sea level rise
- surface currents and ocean dynamics with altimetry
- coastal altimetry
- polar altimetry
- inland altimetry
- marine geoid
- ocean waves
- wind speed over ocean
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Related Special Issue
- Advances in Satellite Altimetry II in Remote Sensing (6 articles)