Recording of OSIRIS-REx with the Allen Telescope Array during SRC reentry

This dataset contains an IQ recording of the X-band 8445.8 MHz telemetry signal from OSIRIS-REx as it passed over California during the sample return capsule reentry. Antennas 1a and 5c from the Allen Telescope Array were used in dual XY (linear) polarization.

The hardware configuration was as follows: the antennas were connected to RFCB LO d, which was tuned to a frequency of 8425 MHz and used an output IF of 512 MHz. A USRP N321 and N320 digitized both polarizations of each antenna. The USRPs used an external 10 MHz reference and PPS coming from the observatory distribution system, and LO sharing was set up among the four channels. The IQ sample rate of the USRPs was 61.44 Msps and a GNU Radio flowgraph was used to record IQ data to disk. The GNU Radio flowgraph stored the IQ data for each channel as 16-bin integers in the GNU Radio metatata file format, with detached headers.

After recording, the data was downsampled to 2.048 Msps centered around 8445.8 MHz and formatted using SigMF using the script do_sigmf.py.