The life cycle of a satellite mission in pictures – Or, why you need a strong calibration &...
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Transcript of The life cycle of a satellite mission in pictures – Or, why you need a strong calibration &...
![Page 1: The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation program Ocean Optics Class University of Maine July.](https://reader035.fdocuments.in/reader035/viewer/2022062719/56649ef35503460f94c05d4c/html5/thumbnails/1.jpg)
The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation
program
Ocean Optics ClassUniversity of Maine
July 2011
![Page 2: The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation program Ocean Optics Class University of Maine July.](https://reader035.fdocuments.in/reader035/viewer/2022062719/56649ef35503460f94c05d4c/html5/thumbnails/2.jpg)
Why invest in a satellite?
![Page 3: The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation program Ocean Optics Class University of Maine July.](https://reader035.fdocuments.in/reader035/viewer/2022062719/56649ef35503460f94c05d4c/html5/thumbnails/3.jpg)
bio-optical data collected by NASA-funded scientists during the MODIS-Aqua era
Because it’s hard to sample the global oceans on boats, buoys, & drifters …
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MODIS-Aqua observations for one day (1 February 2008)
Most ocean color satellites sample the full globe every two days!
![Page 5: The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation program Ocean Optics Class University of Maine July.](https://reader035.fdocuments.in/reader035/viewer/2022062719/56649ef35503460f94c05d4c/html5/thumbnails/5.jpg)
Chesapeake Bay Program
Even if you only care about a small patch of ocean …
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Chesapeake Bay Program
Satellites offer routine synoptic views.
![Page 7: The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation program Ocean Optics Class University of Maine July.](https://reader035.fdocuments.in/reader035/viewer/2022062719/56649ef35503460f94c05d4c/html5/thumbnails/7.jpg)
Chesapeake Bay Program
complementary data streams
And provide wonderfully complementary data streams!
![Page 8: The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation program Ocean Optics Class University of Maine July.](https://reader035.fdocuments.in/reader035/viewer/2022062719/56649ef35503460f94c05d4c/html5/thumbnails/8.jpg)
So, how does one build a satellite flight project & complementary calibration / validation team?
![Page 9: The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation program Ocean Optics Class University of Maine July.](https://reader035.fdocuments.in/reader035/viewer/2022062719/56649ef35503460f94c05d4c/html5/thumbnails/9.jpg)
Let’s say that you come up with a good idea …
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You develop this idea, nurture it in collaboration with scientists & engineers, then pitch it to the powers-that-be.
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Let’s say the powers-that-be like your idea & can help finance its development. You start hosting meetings to review your instrument concept …
Lots & lots of meetings.
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longitude
dept
h
latitude
But life is only partially run in powerpoint. Field work also provides critical insight into instrument requirements.
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Eventually, your idea could become a realized instrument …
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A complete model might even be built …
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If you’re lucky, the powers-that-be might even let it fly on a real spacecraft mission …
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Which requires another series of extensive tests.
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If the instrument passes all of its tests, it’s time to find a ride into space. Chances are, this isn’t near where you live.
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You start holding your breath as the instrument reaches the launch pad …
![Page 19: The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation program Ocean Optics Class University of Maine July.](https://reader035.fdocuments.in/reader035/viewer/2022062719/56649ef35503460f94c05d4c/html5/thumbnails/19.jpg)
… keep holding …
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… keeeeeeeeep holding …
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Finally, launch day! You haven’t exhaled, right?
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http://www.youtube.com/watch?v=WY00J_PgeYc
http://www.youtube.com/watch?v=sYHh8C8Kcrk
How about now? Did I mention that 10-yrs have passed, 1000’s of man-hours expended, & $100M’s been spent since you first came up with your idea?
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Finally, data! Now what? Are you done?
![Page 24: The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation program Ocean Optics Class University of Maine July.](https://reader035.fdocuments.in/reader035/viewer/2022062719/56649ef35503460f94c05d4c/html5/thumbnails/24.jpg)
Sorry, you’re not even close to done. First, you discover that your absolute laboratory calibrations are a little off …
€
g(λ ) =1n
gitruth (λ )
gisatellite(λ )i=1
n∑
![Page 25: The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation program Ocean Optics Class University of Maine July.](https://reader035.fdocuments.in/reader035/viewer/2022062719/56649ef35503460f94c05d4c/html5/thumbnails/25.jpg)
And, your instrument response is changing with time …
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And, your data products can always be improved …
![Page 27: The life cycle of a satellite mission in pictures – Or, why you need a strong calibration & validation program Ocean Optics Class University of Maine July.](https://reader035.fdocuments.in/reader035/viewer/2022062719/56649ef35503460f94c05d4c/html5/thumbnails/27.jpg)
As can your algorithms.
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longitude
dept
h
latitude
Field work support many of these post-launch activities.
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Ultimately, with the proper investment of time, energy, money, collaborative efforts & other resources, you can achieve this … which is pretty cool.