{"paper":{"title":"Wideband RFI Monitor Requirements, Design, and Commissioning at DRAO","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"The RFI monitor at DRAO now provides 2 GHz bandwidth for transient detection and long-term environment monitoring after calibration upgrades.","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Abraham J. Otto, Benoit Robert, Charl Baard, Dustin Lagoy, Mohammad Islam, Nicholas Bruce, Peter F. Driessen, Robert Messing, Stephen Harrison, Timothy Robishaw","submitted_at":"2026-05-08T20:55:23Z","abstract_excerpt":"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 t"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We introduce novel applications for the monitor and derive a new method for calculating the effect of gain drift on integrated data.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The commissioning improvements in calibration method, analog section temperature, and gain stability are assumed to be sufficient to enable reliable long-term operation and accurate transient detection without introducing new systematic errors.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"A 2 GHz bandwidth RFI monitor was commissioned at DRAO for transient detection and radio environment characterization, with a new method derived for calculating gain drift effects on integrated data.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"The RFI monitor at DRAO now provides 2 GHz bandwidth for transient detection and long-term environment monitoring after calibration upgrades.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"9d49040b1023db23553e12fcd70ec750eebe87b455fad926087babcc599f3ea9"},"source":{"id":"2605.08479","kind":"arxiv","version":1},"verdict":{"id":"18d5af4f-ad7f-4bd7-b551-c5ea9abd8667","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-12T01:56:40.806012Z","strongest_claim":"We introduce novel applications for the monitor and derive a new method for calculating the effect of gain drift on integrated data.","one_line_summary":"A 2 GHz bandwidth RFI monitor was commissioned at DRAO for transient detection and radio environment characterization, with a new method derived for calculating gain drift effects on integrated data.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The commissioning improvements in calibration method, analog section temperature, and gain stability are assumed to be sufficient to enable reliable long-term operation and accurate transient detection without introducing new systematic errors.","pith_extraction_headline":"The RFI monitor at DRAO now provides 2 GHz bandwidth for transient detection and long-term environment monitoring after calibration upgrades."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.08479/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"claim_evidence","ran_at":"2026-05-20T09:22:02.058368Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-20T04:34:57.271063Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T15:01:17.727492Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T11:03:59.089131Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"d5311b57556cfddcf61e362b3cc1609c9ce5a463dd21a64dad677ec03d85d28d"},"references":{"count":14,"sample":[{"doi":"","year":2024,"title":"2024, Compact Monitoring Antenna, Alaris Antennas","work_id":"b0fa62ec-dad5-4e0b-8ee3-7082e32353d1","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2016,"title":"2016, Journal of Astronomical Instrumentation, 5, 1641005 26","work_id":"8131bc72-2cf3-4b20-8bd0-277c548c24a9","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.46620/rfi22-011","year":2022,"title":"2022, in Proceedings for RFI 2022, doi: 10.46620/RFI22-011","work_id":"b92a4251-3ca6-4a90-ad00-ae95de7596ec","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.22323/1.471.0025","year":2025,"title":"Bruce, N., Moa, B., Harrison, S., & Driessen, P. F. 2025, in Proceedings of Radio Frequency Interference Conference — PoS(RFI2024), Vol. 471, 025, doi: 10.22323/1.471.0025","work_id":"3fe78164-4806-4120-b3d0-d162b6237050","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1017/9781316987506","year":2019,"title":"and Graham-Smith, Francis and Wilkinson, Peter N","work_id":"15d36306-d0d4-4eb5-bf10-52777385d9db","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":14,"snapshot_sha256":"d8196354d52e50bb6bcc2bd0ab1cd09d6838ef8f02aab8f95a7b66456ae7c882","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"0454f636e4a3367cc304b36b6c9717c132691599dd5833ad6fd6b330e24771f5"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}