CEOS EO HANDBOOK – INSTRUMENT SUMMARY
- ALI
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Full Name
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Advanced Land Imager
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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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High resolution optical imagers 
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Geometry
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Push-broom scanning
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Instrument Technology
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High resolution optical imager
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Sampling
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Imaging
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Data Access
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Open Access
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Data Format
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HDF or GeoTIFF
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Measurements and Applications
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Measurement of Earth surface reflectance. Will validate new technologies contributing to cost reduction and increased capabilities for future missions. ALI comprises a wide field telescope and multispectral and panchromatic instrument.
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Resolution Summary
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PAN: 10 m, VNIR and SWIR: 30 m
[Best Resolution: 10m]
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Swath Summary
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185 km
[Max Swath: 185 km]
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Accuracy Summary
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SNR @ 5% surf refl Pan:220, Multi 1: 215, Multi 2: 280, Multi 3: 290, Multi 4:240, Multi 4':190, Multi 5':130, Multi 5:175, Multi 7:170 (prototype instrument exceeds ETM+ SNR by a factor of 4 - 8)
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Waveband Summary
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10 bands: VIS and NIR: 0.480 - 0.690 µm, 0.433 - 0.453 µm, 0.450 - 0.515 µm, 0.525 - 0.605 µm, 0.630 - 0.690 µm, 0.775 - 0.805 µm, 0.845 - 0.890 µm, 1.200 - 1.300 µm, SWIR: 1.550 - 1.750 µm, 2.080 - 2.350 µm
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| VIS (~0.40 µm - ~0.75 µm) |
| NIR (~0.75 µm - ~1.3 µm) |
| SWIR (~1.3 µm - ~3.0 µm) |
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Instrument Measurements
Measurements Overview
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Instrument Missions
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