Recording of Psyche with the Allen Telescope Array shortly after launch (wideband)

This dataset contains an IQ recording of the X-band 8417.7 MHz telemetry signal from the Psyche spacecraft done with the Allen Telescope Array starting only 1 hour 30 minutes after launch. Antennas 1a and 5c from the ATA were used in dual linear polarization (X and Y polarizations).

The hardware configuration was as follows: the antennas were connected to RFCB LO d, which was tuned to a frequency of 8417 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 4.096 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 formatted using SigMF with the script do_sigmf.py. This dataset contains only the last part of the recording in the original 4.096 Msps sample rate, and only one antenna and polarization. During most of the recording the spacecraft signal is a low rate signal (2 kbps) that fits in a much smaller bandwidth, so another dataset "Recording of Psyche with the Allen Telescope Array shortly after launch (decimated)" has been published with 128 ksps centered at this signal for each antenna and polarization.

本数据集包含使用艾伦望远镜阵列（Allen Telescope Array）在灵神星（Psyche）航天器发射后仅1小时30分钟时采集的X波段8417.7 MHz遥测信号的同相正交（IQ）采样记录。本次采集使用了该阵列的1a与5c号天线，采用双线性极化（X极化与Y极化）模式。

硬件配置如下：天线连接至RFCB LO d模块，该模块调谐至8417 MHz频率，输出中频（IF）为512 MHz。使用USRP N321与USRP N320对每副天线的两路极化信号进行数字化处理。USRP设备采用来自天文台分发系统的外部10 MHz参考时钟与秒脉冲（PPS）信号，并为四个通道配置了本振（LO）共享机制。USRP的IQ采样率为4.096 Msps，且通过GNU Radio流图将IQ数据写入磁盘。GNU Radio流图将每个通道的IQ数据以16位整数格式存储于GNU Radio元数据文件格式中，且采用分离式头文件。

数据采集完成后，通过脚本do_sigmf.py将数据格式化为SigMF标准格式。本数据集仅包含原始4.096 Msps采样率下采集的最后一段数据，且仅对应单副天线与单路极化信号。在多数采集时段内，航天器信号为低速率信号（2千比特每秒，kbps），其带宽远小于当前采样带宽，因此另有一篇数据集"发射后不久使用艾伦望远镜阵列采集的灵神星航天器信号（降采样版）"已发布，该数据集针对每副天线与每路极化信号，以128 ksps的采样率围绕该航天器信号中心进行采集。