Search Help
GLAS/ICESat L1A Global Laser Pointing Data V033
Entry ID: GLA04

Abstract: Data granules contain approximately 190 minutes (2 orbits) of data and will include data from the laser reference system, the instrument star tracker, the gyro, the spacecraft star trackers, and the attitude control system.

Purpose: The data in this product are used to compute the precise pointing for the GLAS laser. It is a multi-file granule. There are six files: LPA, LRS, GYRO, IST, BST, SCPA. The data are derived from the LPA (Laser Pulse Array) and PRAP (Position Rate and Attitude Packet). The LRS and IST data taken from the PRAP are time aligned with laser shots. The BST (Ball Star Tracker) and the ACS (Attitude Control System) data are also extracted from the PRAP but require no time alignment to the LPA.
Related URL
View entire list
Geographic Coverage
Spatial coordinates   
  N: 90.0   S: -90.0   E: 180.0   W: -180.0

Data Set Citation
Version: 033
Parent DIF
This description is a member of a collection. The collection is described in

Temporal Coverage
Start Date: 2003-01-13
Stop Date: 2010-01-13
Data Resolution
Temporal Resolution: Day
ISO Topic Category
Data Set Progress
Extended Metadata Properties
(Click to view more)

Creation and Review Dates
DIF Creation Date: 2011-05-24
Last DIF Revision Date: 2016-01-27