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wg7:apod:apod_obs_auscope [2016/12/20 09:21] Andreas Hellerschmied [Files and data] |
wg7:apod:apod_obs_auscope [2018/04/18 10:14] (current) Andreas Hellerschmied [Ke, Yg, Hb] |
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===== Experiments ===== | ===== Experiments ===== | ||
+ | |||
+ | Please find detailed descriptions of each experiment (including results in terms of multiband delays computed with fourfit) on the following pages: | ||
* [[wg7:apod:316a_HbKe|316a]] (KeYg, 2016-11-11, 22:15:00 - 22:39:1010 UT) | * [[wg7:apod:316a_HbKe|316a]] (KeYg, 2016-11-11, 22:15:00 - 22:39:1010 UT) | ||
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- | ==== Files and data ==== | + | ==== Observation files and data ==== |
- | Files (VEX, tracking data, etc.) related to these sessions are provided on the VieVS server via SFTP: | + | Files (VEX, tracking and satellite orbit data, etc.) related to these sessions are provided on the VieVS server via SFTP: |
* sorts@vievs.hg.tuwien.ac.at | * sorts@vievs.hg.tuwien.ac.at | ||
* password: Please contact [[andreas.hellerschmied@geo.tuwien.ac.at|Andreas Hellerschmied]], if you need the password | * password: Please contact [[andreas.hellerschmied@geo.tuwien.ac.at|Andreas Hellerschmied]], if you need the password | ||
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===== Satellite tracking with AuScope antennas (and Ho) ===== | ===== Satellite tracking with AuScope antennas (and Ho) ===== | ||
- | * Unordered List ItemThe tracking files have to be loaded by the antenna control system which takes some time. Therefore, there is a gap of min. 5 minutes between blocks of quasar observations and satellite scans in the schedules | + | * The tracking files have to be loaded by the antenna control system which takes some time. Therefore, there is a gap of min. 5 minutes between blocks of quasar observations and satellite scans in the schedules |
- | * Basical the S/X APOD signals are visible on an attached spectrum analyzer. This can be used to confirm that the antenna is on source during tracking. | + | * Basically the S/X APOD signals are visible on an attached spectrum analyzer. This can be used to confirm that the antenna is on source during tracking. |
==== Ke, Yg, Hb ==== | ==== Ke, Yg, Hb ==== | ||
* Antenna control with direct AzEl input. | * Antenna control with direct AzEl input. | ||
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**Comments**: | **Comments**: | ||
* Investigating the signal spectra during tracking a periodic variation in the signal amplitude is visible at higher elevations (more pronounced at X-band than in S-band) | * Investigating the signal spectra during tracking a periodic variation in the signal amplitude is visible at higher elevations (more pronounced at X-band than in S-band) | ||
- | * This is probably caused by the antenna tracking system (still "stepwise"?) | + | |
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**Comments**: | **Comments**: | ||
- | * If the satellite becomes too fast track (high elevation) the antenna has problems to catch the track again | + | * If the satellite becomes too fast to track (high elevation) the antenna has problems to catch the track again |
* If there is a rise and set section and the satellite is not observable in between ==> Only observe one of the sections. | * If there is a rise and set section and the satellite is not observable in between ==> Only observe one of the sections. | ||