Software Defined GPS

Paul flew again last Saturday, December 16th from the FAR launch site. If you recall this summer I was fiddling with the Raspberry Pi and ...

So where we last left off , I had successfully tracked the last 15 seconds of coast before apogee using GNSS-SDR. We discovered thanks to a ...

I got a little help on Reddit . Thanks to PE1NUT  for identify a way to visualize the crystal drift in the data and jddes for doing some s...

I GOT A gnss-sdr PVT SOLUTION IN FLIGHT! Success kid is successful. So I managed to get a valid navigation solution for ~ 7 secon...

This post is long overdue as I've been quite busy with my day job that I've been remiss in updating the blog with the progress happ...

I've had several requests for a dataset for users to play with. I've been recalcitrant simply because every dataset I've taken h...

 GPS signals are very weak, coming in at about 120 dBm ... which is below the thermal noise floor of ~ 100 dBm! If you try plotting an FF...

This one took a few evenings of head-scratching to finally resolve. I want to be able to record I/Q off an RTL-SDR stick and then post-pro...