{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:SEFG4USHD7NABRZT2MC6PI5VXV","short_pith_number":"pith:SEFG4USH","schema_version":"1.0","canonical_sha256":"910a6e52471fda00c733d305e7a3b5bd6c9bfe6a099ab9083c98fed90b7cc606","source":{"kind":"arxiv","id":"1401.0621","version":1},"attestation_state":"computed","paper":{"title":"Phase modulation parallel optical delay detector for microwave angle-of-arrival measurement with accuracy monitored","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"A.M.J. Koonen, E. Tangdiongga, H.P.A. van den Boom, Q. Wang, R. Lu, Z. Cao","submitted_at":"2014-01-03T10:57:17Z","abstract_excerpt":"A novel phase modulation parallel optical delay detector is proposed for microwave angle-of-arrival (AOA) measurement with accuracy monitored by using only one dual-electrode Mach-Zenhder modulator. A theoretical model is built up to analyze the proposed system including measurement accuracy monitoring. The spatial delay measurement is translated into the phase shift between two replicas of a microwave signal. Thanks to the accuracy monitoring, the phase shifts from 5{\\deg} to 165{\\deg} are measured with less than 3.1{\\deg} measurement error."},"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":"1401.0621","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-01-03T10:57:17Z","cross_cats_sorted":[],"title_canon_sha256":"60e03f14f5c395deba53e0d49aff03392051fec4a237280ee5d7edb475cb63ed","abstract_canon_sha256":"6d09389c92ea57f8061456eb9dc9ea59c31cd6843c4d2531b43c4c8096de8a73"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:34.253804Z","signature_b64":"EIYe5VODhSfGjQPiO5EWp4EyCiWIOFoHgeJFNgfIU8aHOPIMzJYdlwLJ5ba6mnHXUN8rWUyUJAcPLqJ3w0AKCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"910a6e52471fda00c733d305e7a3b5bd6c9bfe6a099ab9083c98fed90b7cc606","last_reissued_at":"2026-05-18T01:45:34.253406Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:34.253406Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Phase modulation parallel optical delay detector for microwave angle-of-arrival measurement with accuracy monitored","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"A.M.J. Koonen, E. Tangdiongga, H.P.A. van den Boom, Q. Wang, R. Lu, Z. Cao","submitted_at":"2014-01-03T10:57:17Z","abstract_excerpt":"A novel phase modulation parallel optical delay detector is proposed for microwave angle-of-arrival (AOA) measurement with accuracy monitored by using only one dual-electrode Mach-Zenhder modulator. A theoretical model is built up to analyze the proposed system including measurement accuracy monitoring. The spatial delay measurement is translated into the phase shift between two replicas of a microwave signal. Thanks to the accuracy monitoring, the phase shifts from 5{\\deg} to 165{\\deg} are measured with less than 3.1{\\deg} measurement error."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.0621","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":"1401.0621","created_at":"2026-05-18T01:45:34.253463+00:00"},{"alias_kind":"arxiv_version","alias_value":"1401.0621v1","created_at":"2026-05-18T01:45:34.253463+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.0621","created_at":"2026-05-18T01:45:34.253463+00:00"},{"alias_kind":"pith_short_12","alias_value":"SEFG4USHD7NA","created_at":"2026-05-18T12:28:49.207871+00:00"},{"alias_kind":"pith_short_16","alias_value":"SEFG4USHD7NABRZT","created_at":"2026-05-18T12:28:49.207871+00:00"},{"alias_kind":"pith_short_8","alias_value":"SEFG4USH","created_at":"2026-05-18T12:28:49.207871+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/SEFG4USHD7NABRZT2MC6PI5VXV","json":"https://pith.science/pith/SEFG4USHD7NABRZT2MC6PI5VXV.json","graph_json":"https://pith.science/api/pith-number/SEFG4USHD7NABRZT2MC6PI5VXV/graph.json","events_json":"https://pith.science/api/pith-number/SEFG4USHD7NABRZT2MC6PI5VXV/events.json","paper":"https://pith.science/paper/SEFG4USH"},"agent_actions":{"view_html":"https://pith.science/pith/SEFG4USHD7NABRZT2MC6PI5VXV","download_json":"https://pith.science/pith/SEFG4USHD7NABRZT2MC6PI5VXV.json","view_paper":"https://pith.science/paper/SEFG4USH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1401.0621&json=true","fetch_graph":"https://pith.science/api/pith-number/SEFG4USHD7NABRZT2MC6PI5VXV/graph.json","fetch_events":"https://pith.science/api/pith-number/SEFG4USHD7NABRZT2MC6PI5VXV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SEFG4USHD7NABRZT2MC6PI5VXV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SEFG4USHD7NABRZT2MC6PI5VXV/action/storage_attestation","attest_author":"https://pith.science/pith/SEFG4USHD7NABRZT2MC6PI5VXV/action/author_attestation","sign_citation":"https://pith.science/pith/SEFG4USHD7NABRZT2MC6PI5VXV/action/citation_signature","submit_replication":"https://pith.science/pith/SEFG4USHD7NABRZT2MC6PI5VXV/action/replication_record"}},"created_at":"2026-05-18T01:45:34.253463+00:00","updated_at":"2026-05-18T01:45:34.253463+00:00"}