ASTER is an on-demand
instrument. This means that data will only be acquired over a location if a
request has been submitted to observe that area. Any data that ASTER has already
acquired are available to all by ordering those data from the Earth Observing
System Data Gateway (EDG). To request that ASTER acquire new data see
instructions below. Higher level data products are only produced on demand;
instructions for requesting these products are described below. Processing of
level 1A data to level 1B is provided through the Japanese ASTER Ground Data
System (see below).
EXISTING DATA
How do I order already-existing data?
Using Earth
Observing System Data Gateway (EDG) search and order tools, a user can
search the entire EDG database, including all ASTER scenes, to determine if
data have been acquired over the user's area of interest. Any data of interest
can then be ordered.
ON-DEMAND PROCESSING
How do I order higher
level data products?
On Demand processing
requests may be placed at the ASTER
On-Demand Data Gateway. Higher level products are created from L1B data,
except for the DEM product.
How do I order
processing of L1A data to L1B?
Because of relatively small
numbers of automatically generated ASTER level 1B granules, requests to create
1B products from 1A products can be made directly to the Japanese ASTER Ground
Data System (GDS; use the Data Processing Request link from the GDS
Main Menu). For EOS investigators and ASTER team members, the data are
free of charge; for commercial users the cost is 9800 yen/scene (less than
US$100). These requests are limited to those granules that have not yet
been generated, and that are not available at the EDC DAAC.
Prior to submitting a DPR
(Data Processing Request) you will need to register with GDS--use the User
Registration link from the GDS
Main Menu.
REQUESTING NEW
ACQUISITIONS
How do I request that ASTER
acquire new data?
If the desired ASTER observations have not yet been
acquired or even requested, a requestor can become an authorized ASTER User,
and can then submit a data acquisition request (DAR) via the DAR Tool.
To register as an authorized ASTER User,
please select the link below which best describes you.
I'm already an authorized user, how do I submit a
DAR?
The Data Acquisition
Request (DAR) Tool allows you to submit a request.
How does ASTER schedule
observations of the Earth?
What large ASTER
observations of the Earth (e.g. Global Map) are already planned?
Helpful hints to people requesting new
ASTER observations.
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