altimetry


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altimetry

[al′tim·ə·trē]
(engineering)
The measurement of heights in the atmosphere (altitude), generally by an altimeter.
References in periodicals archive ?
Laser altimetry waveform measurement of vegetation canopy structure.
Additional data recorded by the AIMS-T system included real-time differential GPS with Onmistar Satellite enrichment; pitch, roll, yaw attitude of the aircraft by means of an attitude-heading-reference system (AHRS); and LIDAR altimetry.
Coupled with airborne radar and laser altimetry measurements, this information will play a pivotal role in the interpretation of satellite altimetry data and the development of global ice and snow thickness maps.
In addition, altimetry measurements of river and lake levels and gravity-field fluctuations provide indirect measurements of groundwater variability in time and space, Such integrated, crosscutting data sets, gathered at the local, regional, and global levels, are required for a full understanding of the water cycle and, in particular, to decipher how climate change is affecting both regional and global water supplies.
In the meantime, even the comparatively small increases in sea level seen today can produce large effects, particularly when superimposed on high tides and storm surges, says Laury Miller, who heads NASA's Satellite Altimetry Laboratory.
This new volume is a slimmed down version, with new material on satellite altimetry and the effects of climate change.
Initially, the database will support feature sets such as terrain and ocean floor in the form of altimetry data; imagery data; surface material codes; one-dimensional objects; two-dimensional objects such as runways, roads and terrain coplanar areas; moving models; night vision properties; thermal properties; navigational data, and weather data.
Recall that higher than 35 degree of EGM96 harmonics were compiled from combining satellite tracking, satellite altimetry, and terrestrial gravity datasets.
Altimetry data from the TOPEX/Poseidon and Jason satellites are used to monitor the water level of 100 lakes and reservoirs worldwide.
Technologies that enable "terrain hugging" flight--such as radar altimetry, precision guidance and satellite navigation, computerized flight control, high-resolution satellite imagery, and digitized terrain mapping via sophisticated GIS--are becoming increasingly available from commercial sources at affordable costs.
Altogether the OED lists and describes 81 nouns ending in "-metry," including such sciences as altimetry, chronometry, iconometry, morphometry, optometry, radiometry, seismometry, sociometry, stylometry, volumetry, and zoometry.