{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:V6Y46KUKCWSXM2YETSEEOL2L7G","short_pith_number":"pith:V6Y46KUK","schema_version":"1.0","canonical_sha256":"afb1cf2a8a15a5766b049c88472f4bf98bb44bb657ceca945f39c0add203d478","source":{"kind":"arxiv","id":"1901.01131","version":1},"attestation_state":"computed","paper":{"title":"Frequency-modulated continuous-wave laser distance measurement system using Fabry- Perot cavity as measuring reference","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.ins-det","authors_text":"Guang Shi, Kefei Hei, Nandini Bhattacharya, Wen Wang","submitted_at":"2019-01-02T15:33:25Z","abstract_excerpt":"Frequency-modulated continuous-wave (FMCW) is a ranging technique that allows for high precision distance measurement over long distances. Scanning nonlinearity and range of the tunable laser are the main factors affecting the measurement accuracy. Frequency-sampling method is a recognized post-processing scheme to compensate the scanning nonlinearity. In this work, an FMCW laser distance measurement system using a high fineness Fabry-Perot (F-P) cavity as a sampling reference is demonstrated. The frequency of the resampled signal is calculated with a Hilbert transform. The high stability of 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":"1901.01131","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2019-01-02T15:33:25Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"7bcea70cee9d6c81de5ec547dd471e4a530f7aa5ba0867c66b60a48a2c8fd92d","abstract_canon_sha256":"702df5472f506dbfa51d751e6ad8cf9201f9b79b5b96cc317b35ad8df0e5679b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:56.987802Z","signature_b64":"MxRk25fiuWcNiThXVFbwI0/pXn4oXFl95J9+zIzeiOXHIGVG4CgrHsEFnOOE0lOtYSkUfqLzQ4CVc6IMJrghBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"afb1cf2a8a15a5766b049c88472f4bf98bb44bb657ceca945f39c0add203d478","last_reissued_at":"2026-05-17T23:56:56.987306Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:56.987306Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Frequency-modulated continuous-wave laser distance measurement system using Fabry- Perot cavity as measuring reference","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.ins-det","authors_text":"Guang Shi, Kefei Hei, Nandini Bhattacharya, Wen Wang","submitted_at":"2019-01-02T15:33:25Z","abstract_excerpt":"Frequency-modulated continuous-wave (FMCW) is a ranging technique that allows for high precision distance measurement over long distances. Scanning nonlinearity and range of the tunable laser are the main factors affecting the measurement accuracy. Frequency-sampling method is a recognized post-processing scheme to compensate the scanning nonlinearity. In this work, an FMCW laser distance measurement system using a high fineness Fabry-Perot (F-P) cavity as a sampling reference is demonstrated. The frequency of the resampled signal is calculated with a Hilbert transform. The high stability of t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.01131","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":"1901.01131","created_at":"2026-05-17T23:56:56.987403+00:00"},{"alias_kind":"arxiv_version","alias_value":"1901.01131v1","created_at":"2026-05-17T23:56:56.987403+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.01131","created_at":"2026-05-17T23:56:56.987403+00:00"},{"alias_kind":"pith_short_12","alias_value":"V6Y46KUKCWSX","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_16","alias_value":"V6Y46KUKCWSXM2YE","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_8","alias_value":"V6Y46KUK","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/V6Y46KUKCWSXM2YETSEEOL2L7G","json":"https://pith.science/pith/V6Y46KUKCWSXM2YETSEEOL2L7G.json","graph_json":"https://pith.science/api/pith-number/V6Y46KUKCWSXM2YETSEEOL2L7G/graph.json","events_json":"https://pith.science/api/pith-number/V6Y46KUKCWSXM2YETSEEOL2L7G/events.json","paper":"https://pith.science/paper/V6Y46KUK"},"agent_actions":{"view_html":"https://pith.science/pith/V6Y46KUKCWSXM2YETSEEOL2L7G","download_json":"https://pith.science/pith/V6Y46KUKCWSXM2YETSEEOL2L7G.json","view_paper":"https://pith.science/paper/V6Y46KUK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1901.01131&json=true","fetch_graph":"https://pith.science/api/pith-number/V6Y46KUKCWSXM2YETSEEOL2L7G/graph.json","fetch_events":"https://pith.science/api/pith-number/V6Y46KUKCWSXM2YETSEEOL2L7G/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/V6Y46KUKCWSXM2YETSEEOL2L7G/action/timestamp_anchor","attest_storage":"https://pith.science/pith/V6Y46KUKCWSXM2YETSEEOL2L7G/action/storage_attestation","attest_author":"https://pith.science/pith/V6Y46KUKCWSXM2YETSEEOL2L7G/action/author_attestation","sign_citation":"https://pith.science/pith/V6Y46KUKCWSXM2YETSEEOL2L7G/action/citation_signature","submit_replication":"https://pith.science/pith/V6Y46KUKCWSXM2YETSEEOL2L7G/action/replication_record"}},"created_at":"2026-05-17T23:56:56.987403+00:00","updated_at":"2026-05-17T23:56:56.987403+00:00"}