{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:WTJ2DJ4IOEGWAHEHH754C3CPIF","short_pith_number":"pith:WTJ2DJ4I","schema_version":"1.0","canonical_sha256":"b4d3a1a788710d601c873ffbc16c4f417dd1cd7a4be870cea1a29f66663719a9","source":{"kind":"arxiv","id":"1901.06927","version":1},"attestation_state":"computed","paper":{"title":"Laser-based underwater transfer of radio-frequency clock signal with electronic phase compensation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"physics.app-ph","authors_text":"Danian Zhang, Dong Hou, Fuyu Sun, Guangkun Guo","submitted_at":"2019-01-21T13:29:55Z","abstract_excerpt":"We demonstrate a laser-based underwater transfer of radio frequency clock signal with a phase compensation technique. With this frequency transfer scheme, a 100 MHz signal has been transferred over 5 m underwater link. Timing jitter power spectral density, timing fluctuations and instabilities were all measured to evaluate the quality of the transferred frequency signal. The experimental results show the root-mean-square (RMS) timing fluctuations of the transferred frequency signal over 5 m underwater link with and without phase compensation are 2.1 ps and 9.6 ps within 5000 s, respectively. T"},"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":"1901.06927","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-01-21T13:29:55Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"5dd01b60aee8a207e175dfcad4b640b8124e58912dd3a9509a56f76f4e60134b","abstract_canon_sha256":"069bdccf230d61464983a0f3bef63840320be320fb8839ec9d08ee4d0a94a599"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:48.671191Z","signature_b64":"BoAAXV5WeK8fc/BD0fctzSzQa3eCQ9BSLIyJBnyrm2LZtqeBjvhdAOTNvn9tr2HcawCi6DH43EMlU3bsadWUDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b4d3a1a788710d601c873ffbc16c4f417dd1cd7a4be870cea1a29f66663719a9","last_reissued_at":"2026-05-17T23:55:48.670597Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:48.670597Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Laser-based underwater transfer of radio-frequency clock signal with electronic phase compensation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"physics.app-ph","authors_text":"Danian Zhang, Dong Hou, Fuyu Sun, Guangkun Guo","submitted_at":"2019-01-21T13:29:55Z","abstract_excerpt":"We demonstrate a laser-based underwater transfer of radio frequency clock signal with a phase compensation technique. With this frequency transfer scheme, a 100 MHz signal has been transferred over 5 m underwater link. Timing jitter power spectral density, timing fluctuations and instabilities were all measured to evaluate the quality of the transferred frequency signal. The experimental results show the root-mean-square (RMS) timing fluctuations of the transferred frequency signal over 5 m underwater link with and without phase compensation are 2.1 ps and 9.6 ps within 5000 s, respectively. T"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.06927","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":"1901.06927","created_at":"2026-05-17T23:55:48.670680+00:00"},{"alias_kind":"arxiv_version","alias_value":"1901.06927v1","created_at":"2026-05-17T23:55:48.670680+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.06927","created_at":"2026-05-17T23:55:48.670680+00:00"},{"alias_kind":"pith_short_12","alias_value":"WTJ2DJ4IOEGW","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_16","alias_value":"WTJ2DJ4IOEGWAHEH","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_8","alias_value":"WTJ2DJ4I","created_at":"2026-05-18T12:33:30.264802+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/WTJ2DJ4IOEGWAHEHH754C3CPIF","json":"https://pith.science/pith/WTJ2DJ4IOEGWAHEHH754C3CPIF.json","graph_json":"https://pith.science/api/pith-number/WTJ2DJ4IOEGWAHEHH754C3CPIF/graph.json","events_json":"https://pith.science/api/pith-number/WTJ2DJ4IOEGWAHEHH754C3CPIF/events.json","paper":"https://pith.science/paper/WTJ2DJ4I"},"agent_actions":{"view_html":"https://pith.science/pith/WTJ2DJ4IOEGWAHEHH754C3CPIF","download_json":"https://pith.science/pith/WTJ2DJ4IOEGWAHEHH754C3CPIF.json","view_paper":"https://pith.science/paper/WTJ2DJ4I","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1901.06927&json=true","fetch_graph":"https://pith.science/api/pith-number/WTJ2DJ4IOEGWAHEHH754C3CPIF/graph.json","fetch_events":"https://pith.science/api/pith-number/WTJ2DJ4IOEGWAHEHH754C3CPIF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WTJ2DJ4IOEGWAHEHH754C3CPIF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WTJ2DJ4IOEGWAHEHH754C3CPIF/action/storage_attestation","attest_author":"https://pith.science/pith/WTJ2DJ4IOEGWAHEHH754C3CPIF/action/author_attestation","sign_citation":"https://pith.science/pith/WTJ2DJ4IOEGWAHEHH754C3CPIF/action/citation_signature","submit_replication":"https://pith.science/pith/WTJ2DJ4IOEGWAHEHH754C3CPIF/action/replication_record"}},"created_at":"2026-05-17T23:55:48.670680+00:00","updated_at":"2026-05-17T23:55:48.670680+00:00"}