APT3000

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##APT-3000

A browser-based APT decoder for NOAA satellites.

###TODO:

• [x] Demodulate AM signal
• [x] Perform convolution to find sync signals
• [x] Draw image signal onto canvas
• [x] Straighten image
  • ~~Some wiggle still exists...~~
  • ~~Maybe doing convolution at 8320Hz and then downsampling would fix this~~
  • Fixed this by doing convolution at 11025Hz and downsampling for each line
• [x] Add scaling to the canvas
  • Limited, but it's there
• [ ] Implement image rotation based on satellite orbit (N/S)
  • Telemetry? User input? File info?
• [ ] Implement false-color correction
• [ ] Submit a fork/push of ffdead's wav.js
  • I implemented an effective version of ffdead's blank "getSamples" function

###Works Cited (helpful pages from around the web):

• http://www.ncdc.noaa.gov/oa/pod-guide/ncdc/docs/klm/html/c4/sec4-2.htm
• http://markroland.com/project/weather-satellite-imaging/APT_decode.m
• https://github.com/ffdead/wav.js/blob/master/wav.js
• https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API/Tutorial/Pixel_manipulation_with_canvas