The Leica WDM65 Waveform Digitizer Module records the complete waveform of the reflection from surfaces intercepting the laser footprint, allowing advanced LIDAR data analysis for a variety of applications, and all without increasing system size. The WDM65 can be installed inside the existing System Controller on all ALS50-II, ALS60 and ALS Corridor Mapper systems for seamless operation.

Full Waveform Digitization (FWD) is now available for ALS-series Airborne Laser Scanners. This new capability provides additional recorded details for each reflected laser pulse, allowing sophisticated post-flight analysis for applications such as ground cover classification, forestry and biomass calculations. Waveform data is collected in parallel with conventional discrete-return rangefinding, so familiar workflow and data formats are maintained. On flights not requiring waveform data, the FWD function can be turned off, allowing discrete-return rangefinding to continue, extending disk storage. And with new solid-state removable storage, the entire ALS system can be operated at up to 7620 m (25,000 feet) AMSL, even in unpressurized aircraft.

Benefits:

Available - option on new systems, upgrade on fielded ALS50-II ALS60 and ALS Corridor Mappers
Compact – installed inside existing System Controller
Compatible - data output in industry-standard LAS 1.3 format
Fast – acquire waveforms at up to 120 kHz pulse rates, with automatic sub-sampling at higher pulse rates
Flexible – variety of user-selectable waveform length/sample interval options
Robust - solid-state drive (SSD) for data logging
Simple - operates in parallel with existing discrete-return rangefinding electronics

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Leica WDM65 Product Specifications