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10/23
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Kickoff
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Assignment status
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Assignment 1 due today
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Design Notebook due today
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Crossword puzzles will be returned today
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Assignment 2 is posted and due on upcoming Monday
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Mid-term evaluation are live.
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How did the workshop go?
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Cards
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A note about cards
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They are working great in this class
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Is jquery the only way to fix cross-browser issues
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No, most javascript libraries do this also, for whatever there domain is.
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Will the future accuracy of GPS lead to privacy issues?
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What navigation system is used for space ships?
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I don't know
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Why isn't GPS in geo-synchronous orbit?
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part of it is (WAAS), part of it isn't
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I'm not 100% sure, but I know there it is lower, less distortion and latency?
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What languages/technologies should you know to be competitive
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Corporate
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Startup
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Linux
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Ruby/Rails
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MySql
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Amazon Cloud Services
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Apache
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How does the movement of a GPS client affect the accuracy of the positioning?
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Not a whole lot. The satellites are moving a lot faster
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How hard is it to make your own GPS device?
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Depends on how low you want to go...
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Low: Software Radio
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High: OEM development kit
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Is there a limit to the number of GPS receivers that the 24 satellites can handle?
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No.
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How does Wifi-based location differ from GPS?
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Depending on how you look at it, not a whole lot.
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But there is a lot of difference in the details
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What are alternatives to GPS?
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Loran
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Celestial
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Depends on the application
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Are GPS satellites a military target? (ours or others)
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To the best of my knowledge
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Beidou
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Baidu
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are completely unrelated (but both Chinese)
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Why does it take GPS in your car so long to find your location?
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basically satellite lock - depends on your system, we'll talk about why
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Why are we spending so much time on location?
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It's an important component of interaction today
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Although we've actually only spent 1 lecture on it.
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Can GPS be shut down regionally?
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I'm not 100% sure, but I don't think so.
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What's a good cheap GPS receiver?
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I'll give some away today. (Kyle)
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What's my favorite GPS application?
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Geo-Caching
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Is the datum a choice between coordinate systems or a numeric system.
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It is a choice between where 0,0 is and what the shape of the planet is
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Multi-touch demo
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