CEOS EO HANDBOOK – INSTRUMENT SUMMARY
- GLAS
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Full Name
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Geoscience Laser Altimeter System
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Status
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No longer operational
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Instrument Agencies
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NASA
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Maturity
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Instrument Type
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Lidars 
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Geometry
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Nadir-viewing
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Instrument Technology
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Lidar altimeter
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Sampling
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Imaging
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Data Access
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Data Format
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Measurements and Applications
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Provision of data on ice sheet height/thickness, land altitude, aerosol height distributions, cloud height and boundary layer height.
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Resolution Summary
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66 m spots separated by 170 m
[Best Resolution: 66m]
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Swath Summary
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Accuracy Summary
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Aerosol profile: 20%, Ice elevation: 20 cm, Cloud top height: 75 m, Land elevation: 20 cm, geoid: 5 m
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Waveband Summary
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VIS - NIR: Laser emits at 1064 nm (for altimetry) and 532 nm (for atmospheric measurements)
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| VIS (~0.40 µm - ~0.75 µm) |
| NIR (~0.75 µm - ~1.3 µm) |
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Instrument Measurements
Measurements Overview
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Instrument Missions
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