Dataset Open Access

Queqiao recording with Allen Telescope Array on 2021-09-19

Estévez, Daniel

This dataset contains a recording of the S-band telemetry downlink from the Queqiao Chang'e 4 relay satellite in orbit around the Earth-Moon L2 Lagrange point. The recording was done on 2021-09-19 at Allen Telescope Array using antenna 2e in dual XY (linear) polarization.

The hardware configuration was as follows: antenna 2e was connected to RFCB LO d, which was tuned to a frequency of 2234.5 MHz and used an output IF of 512 MHz. A USRP N321 was connected to the IF output of the RFCB and digitized both polarizations. The USRP used external 10 MHz reference and PPS coming from the observatory distribution system. The IQ  sample rate of the USRP was 480 ksps 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 converted to SigMF format.

Files (34.7 GB)
Name Size
Queqiao_2021-09-19_X.hdr
md5:773c907de3e31703bcc5d256cabd6b9b
2.1 MB Download
Queqiao_2021-09-19_X.sigmf-data
md5:b0f25b448792bfbec8ee26296cc07b42
17.4 GB Download
Queqiao_2021-09-19_X.sigmf-meta
md5:d8c76a73313d49d964a7f8627e5a27d5
903 Bytes Download
Queqiao_2021-09-19_Y.hdr
md5:773c907de3e31703bcc5d256cabd6b9b
2.1 MB Download
Queqiao_2021-09-19_Y.sigmf-data
md5:428ce7a715f773ebce1acb52c0225142
17.4 GB Download
Queqiao_2021-09-19_Y.sigmf-meta
md5:6369f23e6d4e5b9f61e2d8b561660901
903 Bytes Download
41
18
views
downloads
All versions This version
Views 4141
Downloads 1818
Data volume 86.8 GB86.8 GB
Unique views 2828
Unique downloads 1212

Share

Cite as