LRGS Enhancements for LRIT
NOAA TWG MeetingMay 12, 2011
Sutron Corporation22400 Davis Drive, Sterling VA 20164
Tel: (703) 406-2800 Email: [email protected]
Not your Grandfather’s LRGS
TWG 11/17/2010 2
DCS Data Flow
TWG May 12, 2011 3
LRIT Availableon both GOES East & West
• Combined data stream of ALL DCPs is sent to both GOES east and west .– LRIT from either Satellite gets the entire DCS
TWG May 12, 2011 4
LRIT sends Files• LRIT is a File Transfer mechanism.• Not efficient to send each DCP Msg in a
Separate File• Files are sent as High, Medium, & Low Priority
TWG May 12, 2011 5
LRIT File Priorities
• Each DCP Msg assigned a priority and placed in High/Medium/Low Priority File– Based on: Channel, DCP Address, Network List
• NOAA sets 3 “limits” that control when files are closed-off and sent.– Max number of messages– Max time-span in seconds– Max file size
TWG May 12, 2011 6
We Recommend …• Limits Controlling when File is Sent:
• How to assign DCP messages to priority:– High: A few very special DCPs (e.g. Tsunami)– Medium: Random channels– Low: Everything else
TWG May 12, 2011 7
Priority Max Msgs Max Time Max Bytes
High 1 1 16,000
Medium 5 10 sec 500,000
Low 200 30 sec 1,000,000
Impact to Processing Software
• LRGS with LRIT looks the same to downstream applications like DECODES.
• No changes required!
TWG May 12, 2011 8
LRIT Receivers
• We have successfully tested Tempest DAS (LRGS) with four different LRIT Receiver Vendors:– Dartcom, NVG, VCS, Avtec
• The vendor provides software for file reconstruction, image capture, and processing.
• LRGS processes DCS files and serves them out to clients like DECODES.
TWG May 12, 2011 9
Sutron LRIT Receiver• Components are Similar to DOMSAT:– Small dish, LNB, Receiver, PC, Software
TWG 11/17/2010 10
LRIT ProvidesDCS Data and GOES Imagery
• Visual & IR Images– Can be saved to TIFF, JPG, PNG– Automatic collection, zoom, geo-reference grid– Animations– Easy integration to web site
• DCS Data– LRGS ingests data from LRIT and merges with
other data sources you might have (DRGS, NOAAPORT, DOMSAT, DDS, etc.)
TWG 11/17/2010 11
Sutron LRIT Software with LRGS
TWG 11/17/2010 12
GOES Imagery Data
TWG 11/17/2010 13
Compare DOMSAT & LRITDOMSAT LRIT
Latency Minimal. DCP messages are sent individually as they arrive
Several seconds may be added as messages are aggregated into files, depending on the priority scheme configured by NOAA
Content DCS only DCS, GOES Imagery (VIS, IR, WV), EMWIN, More to come
Hardware 1.8m dish, legacy receivers getting difficult to procure
1.2m dish, receivers available from a number of vendors
Footprint Continental U.S. Only Entire GOES E & W (roughly the entire western hemisphere)
TWG May 12, 2011 14
DOMSAT Footprint
TWG May 12, 2011 15
Impact to Current DOMSAT Users
• Need to purchase: – Dish, LNB, Cable,– LRIT Receiver (We resell Dartcom),– Decommutation & Image Processing Software– PC (may be required, Dartcom requires Windows)
• Current Tempest LRGS Users:– No additional license costs– We will assist you to upgrade & re-configure
TWG May 12, 2011 16
For More Information
• Contact:– Email: [email protected]– Phone: (703) 406-2800– Web: http://www.sutron.com/products/ILEX.html
TWG May 12, 2011 17
Top Related