{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:XREWTGKYF42SZDO2MCEWJFQOLY","short_pith_number":"pith:XREWTGKY","schema_version":"1.0","canonical_sha256":"bc496999582f352c8dda608964960e5e33e5130c02e177d9276787769ecbf7a8","source":{"kind":"arxiv","id":"1706.04292","version":1},"attestation_state":"computed","paper":{"title":"Interference Mitigation with a Modified ASKAP Phased Array Feed on the 64 m Parkes Radio Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. P. Chippendale, G. Hellbourg","submitted_at":"2017-06-14T01:17:34Z","abstract_excerpt":"We present results from a first attempt to mitigate radio frequency interference in real-time during astronomical measurements with a phased array feed on the 64 m Parkes radio telescope. Suppression of up to 20 dB was achieved despite errors in estimating the interference spatial signature. Best results were achieved in the clean excision of a narrowband and stationary clock signal that originates from the receiver's digital back-end system. We also contribute a method to interpolate valid beamformer weights at interference-affected channels. Correct initial beam weights are required to avoid"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1706.04292","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-06-14T01:17:34Z","cross_cats_sorted":[],"title_canon_sha256":"f87b66b069072e6b5ed6f7a6fdcf9772a402e667d839f9c952291bc220b9665c","abstract_canon_sha256":"e593ea94df0831ad1878afb64de614334f4d7563fa7161285fdede593258290b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:59.574426Z","signature_b64":"U6SW4P7eExrhxOJITSkrFUs3YYeye+ShwIxrFiD/UMVmhypY9U8a0vSXMOwcr7sEghvFvlHZrE0xErTENnijCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bc496999582f352c8dda608964960e5e33e5130c02e177d9276787769ecbf7a8","last_reissued_at":"2026-05-18T00:32:59.573817Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:59.573817Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Interference Mitigation with a Modified ASKAP Phased Array Feed on the 64 m Parkes Radio Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. P. Chippendale, G. Hellbourg","submitted_at":"2017-06-14T01:17:34Z","abstract_excerpt":"We present results from a first attempt to mitigate radio frequency interference in real-time during astronomical measurements with a phased array feed on the 64 m Parkes radio telescope. Suppression of up to 20 dB was achieved despite errors in estimating the interference spatial signature. Best results were achieved in the clean excision of a narrowband and stationary clock signal that originates from the receiver's digital back-end system. We also contribute a method to interpolate valid beamformer weights at interference-affected channels. Correct initial beam weights are required to avoid"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.04292","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1706.04292","created_at":"2026-05-18T00:32:59.573879+00:00"},{"alias_kind":"arxiv_version","alias_value":"1706.04292v1","created_at":"2026-05-18T00:32:59.573879+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.04292","created_at":"2026-05-18T00:32:59.573879+00:00"},{"alias_kind":"pith_short_12","alias_value":"XREWTGKYF42S","created_at":"2026-05-18T12:31:56.362134+00:00"},{"alias_kind":"pith_short_16","alias_value":"XREWTGKYF42SZDO2","created_at":"2026-05-18T12:31:56.362134+00:00"},{"alias_kind":"pith_short_8","alias_value":"XREWTGKY","created_at":"2026-05-18T12:31:56.362134+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XREWTGKYF42SZDO2MCEWJFQOLY","json":"https://pith.science/pith/XREWTGKYF42SZDO2MCEWJFQOLY.json","graph_json":"https://pith.science/api/pith-number/XREWTGKYF42SZDO2MCEWJFQOLY/graph.json","events_json":"https://pith.science/api/pith-number/XREWTGKYF42SZDO2MCEWJFQOLY/events.json","paper":"https://pith.science/paper/XREWTGKY"},"agent_actions":{"view_html":"https://pith.science/pith/XREWTGKYF42SZDO2MCEWJFQOLY","download_json":"https://pith.science/pith/XREWTGKYF42SZDO2MCEWJFQOLY.json","view_paper":"https://pith.science/paper/XREWTGKY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1706.04292&json=true","fetch_graph":"https://pith.science/api/pith-number/XREWTGKYF42SZDO2MCEWJFQOLY/graph.json","fetch_events":"https://pith.science/api/pith-number/XREWTGKYF42SZDO2MCEWJFQOLY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XREWTGKYF42SZDO2MCEWJFQOLY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XREWTGKYF42SZDO2MCEWJFQOLY/action/storage_attestation","attest_author":"https://pith.science/pith/XREWTGKYF42SZDO2MCEWJFQOLY/action/author_attestation","sign_citation":"https://pith.science/pith/XREWTGKYF42SZDO2MCEWJFQOLY/action/citation_signature","submit_replication":"https://pith.science/pith/XREWTGKYF42SZDO2MCEWJFQOLY/action/replication_record"}},"created_at":"2026-05-18T00:32:59.573879+00:00","updated_at":"2026-05-18T00:32:59.573879+00:00"}