GEDI L1B Geolocated Waveform Data Global Footprint Level V002

The Global Ecosystem Dynamics Investigation (GEDI) mission aims to characterize ecosystem structure and dynamics to enable radically improved quantification and understanding of the Earth’s carbon cycle and biodiversity. The GEDI instrument produces high resolution laser ranging observations of the 3-dimensional structure of the Earth. GEDI is attached to the International Space Station (ISS) and collects data globally between 51.6° N and 51.6° S latitudes at the highest resolution and densest sampling of any light detection and ranging (lidar) instrument in orbit to date. Each GEDI Version 2 granule encompasses one-fourth of an ISS orbit and includes georeferenced metadata to allow for spatial querying and subsetting.

The GEDI Level 1B Geolocated Waveforms product (GEDI01_B) provides geolocated corrected and smoothed waveforms, geolocation parameters, and geophysical corrections for each laser shot for all eight GEDI beams. GEDI01_B data are created by geolocating the GEDI01_A raw waveform data. The GEDI01_B product is provided in HDF5 format and has a spatial resolution (average footprint) of 25 meters.

The GEDI01_B data product contains 85 layers for each of the eight beams including the geolocated corrected and smoothed waveform datasets and parameters and the accompanying ancillary, geolocation, and geophysical correction. Additional information can be found in the GEDI L1B Product Data Dictionary.

全球生态系统动态调查（GEDI）任务旨在描绘生态系统结构及其动态变化，以实现地球碳循环和生物多样性的量化与理解的革命性提升。GEDI仪器对地球三维结构进行高分辨率激光测距观测。GEDI仪器附着于国际空间站（ISS），在全球范围内，自北纬51.6°至南纬51.6°之间，以迄今为止任何轨道激光探测与测距（lidar）仪器所能达到的最高分辨率和最密集的采样率收集数据。每个GEDI版本2数据块涵盖国际空间站轨道的四分之一，并包含地理参照元数据，以支持空间查询和子集划分。

GEDI Level 1B地理定位波形产品（GEDI01_B）提供针对所有八个GEDI波束的每个激光脉冲的地理定位校正和光滑波形、地理定位参数和地球物理校正。GEDI01_B数据是通过地理定位GEDI01_A原始波形数据创建的。该产品以HDF5格式提供，具有25米的平均空间分辨率。

GEDI01_B数据产品包含八个波束的85个层次，包括地理定位校正和光滑波形数据集及参数，以及相关的辅助数据、地理定位和地球物理校正数据。更多详细信息可参考GEDI L1B产品数据字典。