This collection of MATLAB® functions is for working with ATM (Airborne Topographic Mapper, https://atm.wff.nasa.gov/) laser altimetry data products in HDF5 waveform format.

The data products (designated ILATMW1B) are freely available at the National Snow and Ice Data Center (NSIDC) at https://nsidc.org/data/icebridge or can be downloaded from the NASA Earthdata portal at https://earthdata.nasa.gov/

The ILATMW1B waveform data is available at NSIDC: https://nsidc.org/data/ILNSAW1B/versions/1 (narrow swath) https://nsidc.org/data/ILATMW1B/versions/1 (wide swath)

A user guide for the ILATMW1B waveform data is included and can also be downloaded here: https://atm.wff.nasa.gov/files/browser/ATM_waveform_product_user_manual.pdf