Optech's ALTM Airborne Laser Terrain Mapper acquires digital elevation data with accuracies equivalent to those of GPS, but thousands of times faster.
- High-resolution, high-accuracy, digital elevation data
- Day and night operation
- Independently geo-referenced intensity and elevation data
- Ranges to trees and to the ground beneath in a single pass: Simultaneous first- and last-pulse capability
- Rapid coverage and data output: 1000 square kilometres in less than 12 hours, with DEM data available within 24 hours
- Range measurements independent of target composition: Bright targets such as sand or snow give the same range as dark targets such as asphalt
