{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:7TB3SXVU7JBEOVIR44SCHTUR75","short_pith_number":"pith:7TB3SXVU","schema_version":"1.0","canonical_sha256":"fcc3b95eb4fa42475511e72423ce91ff6ba29360805fc1abc9592ed580e4b69d","source":{"kind":"arxiv","id":"2502.05016","version":1},"attestation_state":"computed","paper":{"title":"Impact of Model Mismatch on DOA Estimation with MUSIC: Near-Field and Far-Field","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Don-Roberts Emenonye, Harpreet S. Dhillon, R. Michael Buehrer","submitted_at":"2025-02-07T15:45:11Z","abstract_excerpt":"There has been substantial work on developing variants of the multiple signal classification (MUSIC) algorithms that take advantage of the information present in the near-field propagation regime. However, it is not always easy to determine the correct propagation regime, which opens the possibility of incorrectly applying simpler algorithms (meant for far-field) in the near-field regime. Inspired by this, we use simulation results to investigate the performance drop when there is a mismatch between the signal model in the MUSIC algorithm and the propagation regime. For direction of arrival (D"},"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":"2502.05016","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"eess.SP","submitted_at":"2025-02-07T15:45:11Z","cross_cats_sorted":[],"title_canon_sha256":"5fab372920614b00d80be08043ba9f3479a365f09244264399368a43c17dda01","abstract_canon_sha256":"127f8fe0e770b212959d7c47d4832e36c5d4d27c711c20ad21a021664715acec"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:11:01.585956Z","signature_b64":"1otyAJdhfWYEokbdaLkyJLT4t0/hTjRrYHV9kG0W3T3C5kHTFnNL/uttOYt7EVlGQm9/Os93lXkauH9xdFAMCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fcc3b95eb4fa42475511e72423ce91ff6ba29360805fc1abc9592ed580e4b69d","last_reissued_at":"2026-07-05T10:11:01.585490Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:11:01.585490Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Impact of Model Mismatch on DOA Estimation with MUSIC: Near-Field and Far-Field","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Don-Roberts Emenonye, Harpreet S. Dhillon, R. Michael Buehrer","submitted_at":"2025-02-07T15:45:11Z","abstract_excerpt":"There has been substantial work on developing variants of the multiple signal classification (MUSIC) algorithms that take advantage of the information present in the near-field propagation regime. However, it is not always easy to determine the correct propagation regime, which opens the possibility of incorrectly applying simpler algorithms (meant for far-field) in the near-field regime. Inspired by this, we use simulation results to investigate the performance drop when there is a mismatch between the signal model in the MUSIC algorithm and the propagation regime. For direction of arrival (D"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.05016","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2502.05016/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2502.05016","created_at":"2026-07-05T10:11:01.585554+00:00"},{"alias_kind":"arxiv_version","alias_value":"2502.05016v1","created_at":"2026-07-05T10:11:01.585554+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.05016","created_at":"2026-07-05T10:11:01.585554+00:00"},{"alias_kind":"pith_short_12","alias_value":"7TB3SXVU7JBE","created_at":"2026-07-05T10:11:01.585554+00:00"},{"alias_kind":"pith_short_16","alias_value":"7TB3SXVU7JBEOVIR","created_at":"2026-07-05T10:11:01.585554+00:00"},{"alias_kind":"pith_short_8","alias_value":"7TB3SXVU","created_at":"2026-07-05T10:11:01.585554+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/7TB3SXVU7JBEOVIR44SCHTUR75","json":"https://pith.science/pith/7TB3SXVU7JBEOVIR44SCHTUR75.json","graph_json":"https://pith.science/api/pith-number/7TB3SXVU7JBEOVIR44SCHTUR75/graph.json","events_json":"https://pith.science/api/pith-number/7TB3SXVU7JBEOVIR44SCHTUR75/events.json","paper":"https://pith.science/paper/7TB3SXVU"},"agent_actions":{"view_html":"https://pith.science/pith/7TB3SXVU7JBEOVIR44SCHTUR75","download_json":"https://pith.science/pith/7TB3SXVU7JBEOVIR44SCHTUR75.json","view_paper":"https://pith.science/paper/7TB3SXVU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2502.05016&json=true","fetch_graph":"https://pith.science/api/pith-number/7TB3SXVU7JBEOVIR44SCHTUR75/graph.json","fetch_events":"https://pith.science/api/pith-number/7TB3SXVU7JBEOVIR44SCHTUR75/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7TB3SXVU7JBEOVIR44SCHTUR75/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7TB3SXVU7JBEOVIR44SCHTUR75/action/storage_attestation","attest_author":"https://pith.science/pith/7TB3SXVU7JBEOVIR44SCHTUR75/action/author_attestation","sign_citation":"https://pith.science/pith/7TB3SXVU7JBEOVIR44SCHTUR75/action/citation_signature","submit_replication":"https://pith.science/pith/7TB3SXVU7JBEOVIR44SCHTUR75/action/replication_record"}},"created_at":"2026-07-05T10:11:01.585554+00:00","updated_at":"2026-07-05T10:11:01.585554+00:00"}