SpaceX August 2016 Infrasound

We are staging a citizen science event infrasound capture for the upcoming SpaceX launch on 18 February 2017, we have a live web page at

 redvox.io/status/group/Canaveral

with near-real time spectrograms from iPhones in the region. I happened to be around the Space Coast in August 2016 when SpaceX successfully launched (and landed), and we picked up some nice waveforms with iPhones, iPads, and traditional sensors.

Figure 1. Multiresolution spectrogram for Falcon 9 launch captured with an iPhone6+ around 10 km away. Time is in the horizontal axis, lower panel is pressure, middle panel is spectral energy, and upper panel is the signal to noise ratio.

Figure 2. Spectrogram for Falcon9 launch captured with a traditional sensor a few km away

Figure 3. Falcon9, infrasound array processing. Time on the horizontal, launch on the left, barge drone landing on the right. It's complicated.

Some of the traditional sensors were set up as an array, which allows us to look at very detailed detection statistics.

For the February 2017 launch we would like to consider what we can do with a network of smartphone sensors deployed by citizen scientists.