Wideband RFI Monitor Requirements, Design, and Commissioning at DRAO
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866914546191433728 |
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| author | Bruce, Nicholas Baard, Charl Harrison, Stephen Islam, Mohammad Otto, Abraham J. Lagoy, Dustin Messing, Robert Robert, Benoit Robishaw, Timothy Driessen, Peter F. |
| author_facet | Bruce, Nicholas Baard, Charl Harrison, Stephen Islam, Mohammad Otto, Abraham J. Lagoy, Dustin Messing, Robert Robert, Benoit Robishaw, Timothy Driessen, Peter F. |
| contents | In this paper, we introduce the radio frequency interference monitor deployed at the Dominion Radio Astrophysical Observatory. It provides 2 GHz of instantaneous bandwidth, supporting channel bandwidths as fine as ~100 Hz for 1 s integrations, or integration times as low as ~50 ms for the standard 3.33 kHz channel bandwidth. After operating as a prototype instrument for several years, the monitor was commissioned to improve the calibration method, analog section temperature, and gain stability. It now operates both as a transient detector and as a long-term radio environment characterization tool. We introduce novel applications for the monitor and derive a new method for calculating the effect of gain drift on integrated data. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2605_08479 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Wideband RFI Monitor Requirements, Design, and Commissioning at DRAO Bruce, Nicholas Baard, Charl Harrison, Stephen Islam, Mohammad Otto, Abraham J. Lagoy, Dustin Messing, Robert Robert, Benoit Robishaw, Timothy Driessen, Peter F. Instrumentation and Methods for Astrophysics In this paper, we introduce the radio frequency interference monitor deployed at the Dominion Radio Astrophysical Observatory. It provides 2 GHz of instantaneous bandwidth, supporting channel bandwidths as fine as ~100 Hz for 1 s integrations, or integration times as low as ~50 ms for the standard 3.33 kHz channel bandwidth. After operating as a prototype instrument for several years, the monitor was commissioned to improve the calibration method, analog section temperature, and gain stability. It now operates both as a transient detector and as a long-term radio environment characterization tool. We introduce novel applications for the monitor and derive a new method for calculating the effect of gain drift on integrated data. |
| title | Wideband RFI Monitor Requirements, Design, and Commissioning at DRAO |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2605.08479 |