{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:HFECA6I3HMZR6ISV5LNWOPLFJP","short_pith_number":"pith:HFECA6I3","schema_version":"1.0","canonical_sha256":"394820791b3b331f2255eadb673d654bc252daeaf354b884d0728cc41de4062f","source":{"kind":"arxiv","id":"1805.11434","version":1},"attestation_state":"computed","paper":{"title":"Spectrum management and compatibility studies with Python","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Jessner (1) ((1) MPIfR, Bonn, B. Winkel (1), Germany)","submitted_at":"2018-05-29T13:27:42Z","abstract_excerpt":"We developed the pycraf Python package, which provides functions and procedures for various tasks related to spectrum-management compatibility studies. This includes an implementation of ITU-R Rec. P.452, which allows to calculate the path attenuation arising from the distance and terrain properties between an interferer and the victim service. A typical example would be the calculation of interference levels at a radio telescope produced from a radio broadcasting tower. Furthermore, pycraf provides functionality to calculate atmospheric attenuation as proposed in ITU-R Rec. P.676.\n  Using the"},"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":"1805.11434","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-05-29T13:27:42Z","cross_cats_sorted":[],"title_canon_sha256":"7e92b8f01a9c1ccb745099a8c8fa9166eb379c4907f33b24f0e05f3e3722ea3d","abstract_canon_sha256":"7746e0da5ecea65e61c08bb5839081044571e2a2356a06b6128867fe15322e33"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:14:42.587206Z","signature_b64":"/FSrkibC1hWegyVJXYwnVtWuR5jWFRw8Fi1c0LLKOoEa9YU0H9rVX0GZDTl/F+oQFnlnsafv6H6Ut43uUU0qAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"394820791b3b331f2255eadb673d654bc252daeaf354b884d0728cc41de4062f","last_reissued_at":"2026-05-18T00:14:42.586664Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:14:42.586664Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spectrum management and compatibility studies with Python","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Jessner (1) ((1) MPIfR, Bonn, B. Winkel (1), Germany)","submitted_at":"2018-05-29T13:27:42Z","abstract_excerpt":"We developed the pycraf Python package, which provides functions and procedures for various tasks related to spectrum-management compatibility studies. This includes an implementation of ITU-R Rec. P.452, which allows to calculate the path attenuation arising from the distance and terrain properties between an interferer and the victim service. A typical example would be the calculation of interference levels at a radio telescope produced from a radio broadcasting tower. Furthermore, pycraf provides functionality to calculate atmospheric attenuation as proposed in ITU-R Rec. P.676.\n  Using the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.11434","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":"1805.11434","created_at":"2026-05-18T00:14:42.586742+00:00"},{"alias_kind":"arxiv_version","alias_value":"1805.11434v1","created_at":"2026-05-18T00:14:42.586742+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.11434","created_at":"2026-05-18T00:14:42.586742+00:00"},{"alias_kind":"pith_short_12","alias_value":"HFECA6I3HMZR","created_at":"2026-05-18T12:32:28.185984+00:00"},{"alias_kind":"pith_short_16","alias_value":"HFECA6I3HMZR6ISV","created_at":"2026-05-18T12:32:28.185984+00:00"},{"alias_kind":"pith_short_8","alias_value":"HFECA6I3","created_at":"2026-05-18T12:32:28.185984+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/HFECA6I3HMZR6ISV5LNWOPLFJP","json":"https://pith.science/pith/HFECA6I3HMZR6ISV5LNWOPLFJP.json","graph_json":"https://pith.science/api/pith-number/HFECA6I3HMZR6ISV5LNWOPLFJP/graph.json","events_json":"https://pith.science/api/pith-number/HFECA6I3HMZR6ISV5LNWOPLFJP/events.json","paper":"https://pith.science/paper/HFECA6I3"},"agent_actions":{"view_html":"https://pith.science/pith/HFECA6I3HMZR6ISV5LNWOPLFJP","download_json":"https://pith.science/pith/HFECA6I3HMZR6ISV5LNWOPLFJP.json","view_paper":"https://pith.science/paper/HFECA6I3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1805.11434&json=true","fetch_graph":"https://pith.science/api/pith-number/HFECA6I3HMZR6ISV5LNWOPLFJP/graph.json","fetch_events":"https://pith.science/api/pith-number/HFECA6I3HMZR6ISV5LNWOPLFJP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HFECA6I3HMZR6ISV5LNWOPLFJP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HFECA6I3HMZR6ISV5LNWOPLFJP/action/storage_attestation","attest_author":"https://pith.science/pith/HFECA6I3HMZR6ISV5LNWOPLFJP/action/author_attestation","sign_citation":"https://pith.science/pith/HFECA6I3HMZR6ISV5LNWOPLFJP/action/citation_signature","submit_replication":"https://pith.science/pith/HFECA6I3HMZR6ISV5LNWOPLFJP/action/replication_record"}},"created_at":"2026-05-18T00:14:42.586742+00:00","updated_at":"2026-05-18T00:14:42.586742+00:00"}