How to Troubleshoot Apps for the Modern Connected Worker
Lim IGARSS2011 Reduced.ppt
1. CALIBRATION AND PERFORMANCE OF THE HAMSR INSTRUMENT DURING THE NASA GRIP CAMPAIGN Boon Lim*, Shannon Brown, Richard Denning, Pekka Kangaslahti, Bjorn Lambrigtsen, Jordan Tanabe, and Alan Tanner Jet Propulsion Laboratory *Contact : Boon.H.Lim@jpl.nasa.gov
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5. GRIP Flights 7/29/2011 IGARSS 2011 Frank 08/28/2010 Earl 09/02/2010 Matthew 09/23/2010 AL92 09/12/2010 Karl 09/16/2010
8. HAMSR GRIP Ground Data System HAMSR ground data processor netCDF L1B files JPL Hurricane Portal HAMSR website quick look images RTMM Commanding Data downlink GHOC
9. HAMSR software upgraded after GRIP to provide real-time imagery over Iridium Successfully tested during 2011 WISPAR campaign HAMSR RTMM Display for GRIP
4 distributed thermisors Ambient targets maximum rate of change ~20C over 3 hours, 7C per hour Heated targets very stable Improvements with dithering of the dac
Approx 10C separation in the targets Will also automatically flag if there is a ‘broken’ channel – connection loose, thermal breaks, motor scanning, other mechanical issues
No discernable difference when Using the Hot or Ambient Counts. Future processing would take a better average of it.
The gain now actually represents the physical change in the system Receiver temperature does not change on small time scales
Instantaneous reaction to changes in the system, represented by the change in the counts. Note the thickness in the trace of the ‘smoothed’ gain Actually in the receiver
Even in failure situations, the calibration is robust and does not incorrectly flag data
Noise statistics, STD vs percentage Imperative that the flagged pixels are actually what ‘marginal’ and is not flagging good data
Noise statistics, STD vs percentage Imperative that the flagged pixels are actually what ‘marginal’ and is not flagging good data
Integrated Multispectral Atmospheric Sounders (IMAS) – NASA Code Y Technology Development Funds JPL, TRW, UMASS develop InP MMICs 55/118 downconverter units CAMEX-4 Convection And Moisture Experiment (Jacksonville, Florida) TCSP Tropical Cloud Systems and Processes (Costa Rica) NAMMA NASA African Monsoon Multidisciplinary Analyses (Cape Verde)
4 distributed thermisors Ambient targets maximum rate of change ~20C over 3 hours, 7C per hour Heated targets very stable Improvements with dithering of the dac
0.52 dwell time on each target Lines indicated the maximum time from the other target and the maximum time from a single ended calibration
![Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],7/29/2011 IGARSS 2011](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)