CALMON data 1
Use of daily CALMON data
Brian StewartRAL
CALMON data 2
Topics
• Work in progress, based on– Engineering Report data
• Scan averages generated by daily routine processing
– Raw telemetry data
CALMON data 3
ER data
•Integrating Sphere •25th-27th Dec 2004•Daily average SW signal over 282 samples – BB
•Average over ALL pixels•Averages per pixel
•Peak at approx 6pm each day, pattern repeats from day to day
CALMON data 4
CALMON all pixels
•Integrating Sphere •Daily peak of average SW signal over 282 samples and all pixels
•Gaps – Sun avoidance seasons•Geometry appears to repeat from year to year•Overall ~3% change 2003 – 2004
CALMON data 5
CALMON data by pixel
•Integrating Sphere •Daily peak average SW signal over 282 samples for individual pixels•Relative pixel signals appears to repeat from year to year•Overall shape repeats from year to year
June 21st 2003
June 21st 2004
CALMON data 6
CALMON ratio
•Integrating Sphere
•Ratio of daily peak average SW signal over 282 samples for individual pixels
2003 peak/2004 peak
CALMON data 7
Pixel data
•Pixel 128 (2003)•CALMON –BB data
•Time ordered (SW, total) as in ER•Sorted by Sun angle
CALMON data 8
Pixel data (2)
•Pixel 128 • SW-BB• median in 1° intervals
CALMON data 9
Pixel data(3)
•Pixel 128 • peak and baseline well defined
CALMON data 10
All pixels
• Feb 28th 2003, 2004, 2005
•Same patterns
2003/02/28
2004/02/28
2005/02/28
CALMON data 11
All pixels(2)
•Pixel peaks•28/02/03•28/02/04•28/02/05
CALMON data 12
Response ratios
• ~5% 2003-2004• ~1% 2004-2005• pixel/ pixel ~constant• differences
•Pixels 0-128•Pixel 28
• More work •ER or raw data•Photo-diode
CALMON data 13
Photodiode data
CALMON data 14
Photodiode data(2)•Diodes A,B,C
•1 msec response•CALMON response•Direct solar signal•24° integration
•Problems
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