##APT-3000

---

A browser-based APT decoder for NOAA satellites.

###TODO:

• Demodulate AM signal
• Perform convolution to find sync signals
• Draw image signal onto canvas
• 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
• 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