Posts about our GPS study groupFall term, 2014
Sep 29 Some GPS Success And Some Visualization
We’ve had a couple more weeks of GPS study group meetings and slowly we’re starting to catch up on how GPS works.
Notably we’ve taken our test data source and updated Jamey’s old GPS FFT cross cross-correlation code and successfully “found” several satellites in the noise!
We spent last Tuesday meeting discussing how to use cross-correlation between the noisy radio recording a crafted ideal GPS signal to “look” for the hidden GPS data in the recording. This is based off of Andrew Holme’s GPS FFT work.
In addition Nathan has started doing some visualizations of basic GPS encoding:
Aug 26 GPS Study Group Meeting Notes
It’s important to know that I may or may not have followed along correctly so these notes are just for reference. I hope they’re helpful!
Aug 12 GPS Study Group Meeting Notes
We started off the study group with Jamey giving his presentation: The 20,000km view: How GPS works.
Our plan is to meet every Tuesday except the 1st Tuesday of the month at 6pm before the PSAS meeting. We’ll meet through December 15th and we’re open to the public! We’re going to explore how to write a software-based GPS receiver using the raw data we get off the JennerGPS open source GPS RF front-end.