{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:4QWRTTW2UOT7XAAH4PVLXVQTPN","short_pith_number":"pith:4QWRTTW2","canonical_record":{"source":{"id":"1312.7208","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"quant-ph","submitted_at":"2013-12-27T07:48:24Z","cross_cats_sorted":[],"title_canon_sha256":"fb2b62775343c502124c04253d22f6515e56c96ce7e86301958b3d10579e8d91","abstract_canon_sha256":"1c6244b62576e86c91814f686b19c29971fa750186270421c97af7f789249138"},"schema_version":"1.0"},"canonical_sha256":"e42d19cedaa3a7fb8007e3eabbd6137b47a0c3d572caa8e7137566210f4a3c3e","source":{"kind":"arxiv","id":"1312.7208","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.7208","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"arxiv_version","alias_value":"1312.7208v2","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.7208","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"pith_short_12","alias_value":"4QWRTTW2UOT7","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4QWRTTW2UOT7XAAH","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4QWRTTW2","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:4QWRTTW2UOT7XAAH4PVLXVQTPN","target":"record","payload":{"canonical_record":{"source":{"id":"1312.7208","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"quant-ph","submitted_at":"2013-12-27T07:48:24Z","cross_cats_sorted":[],"title_canon_sha256":"fb2b62775343c502124c04253d22f6515e56c96ce7e86301958b3d10579e8d91","abstract_canon_sha256":"1c6244b62576e86c91814f686b19c29971fa750186270421c97af7f789249138"},"schema_version":"1.0"},"canonical_sha256":"e42d19cedaa3a7fb8007e3eabbd6137b47a0c3d572caa8e7137566210f4a3c3e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:57:35.341338Z","signature_b64":"CiG7JzBqA2tlEOaXTf7GlwOwJGIfluEely9v/LwGQJRBjnHTzOvBuowAbAe8QReAUo25/ovi63VVsuFDb8XTCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e42d19cedaa3a7fb8007e3eabbd6137b47a0c3d572caa8e7137566210f4a3c3e","last_reissued_at":"2026-05-18T02:57:35.340666Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:57:35.340666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1312.7208","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:57:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ctzEdi9817fca86XqQ8DMmZziUaJOOa0t4QSVpYkOhd97/s4ecVi9Wn0UnAZM60dLZTbQ8avvSVmCrjGsy6+CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T20:00:13.811392Z"},"content_sha256":"f31d60716e692d0793481ca140b0c80b1e05ad4952d98e9087ffb2951e56d267","schema_version":"1.0","event_id":"sha256:f31d60716e692d0793481ca140b0c80b1e05ad4952d98e9087ffb2951e56d267"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:4QWRTTW2UOT7XAAH4PVLXVQTPN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High Precision Inertial Rotation Rate and Magnetic Field Estimate via Extended Kalman Filter","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Bo Qi, Lijun Liu, Shuming Cheng, Zairong Xi","submitted_at":"2013-12-27T07:48:24Z","abstract_excerpt":"Recent developments of technology have enabled atomic spins as the most sensitive inertial and magnetic sensors. Atomic spin gyroscope (magnetometer) essentially outputs the estimate of the inertial rotation rate (magnetic filed) to be measured. Conventional methods for estimating a static or quasi-static inertial rotation rate (magnetic field) employ the dependency relationship between the steady state signal and the input rotation rate (magnetic field). In this paper we present an extended Kalman filter (EKF) method for the atomic spin gyroscope and magnetometer. It is demonstrated that the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.7208","kind":"arxiv","version":2},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:57:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t6vzy1vTw5jApAMVMk4QqXHDS+ksjex/MbpehaWDkj9cujvxVx1taaf848qCe+tug+QY9aJBJfZcDpCDC+4dAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T20:00:13.811739Z"},"content_sha256":"1a752168a08114c3dddb356359dcb6593565fdc866e62173885ff89cc1a392c9","schema_version":"1.0","event_id":"sha256:1a752168a08114c3dddb356359dcb6593565fdc866e62173885ff89cc1a392c9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4QWRTTW2UOT7XAAH4PVLXVQTPN/bundle.json","state_url":"https://pith.science/pith/4QWRTTW2UOT7XAAH4PVLXVQTPN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4QWRTTW2UOT7XAAH4PVLXVQTPN/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-22T20:00:13Z","links":{"resolver":"https://pith.science/pith/4QWRTTW2UOT7XAAH4PVLXVQTPN","bundle":"https://pith.science/pith/4QWRTTW2UOT7XAAH4PVLXVQTPN/bundle.json","state":"https://pith.science/pith/4QWRTTW2UOT7XAAH4PVLXVQTPN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4QWRTTW2UOT7XAAH4PVLXVQTPN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:4QWRTTW2UOT7XAAH4PVLXVQTPN","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1c6244b62576e86c91814f686b19c29971fa750186270421c97af7f789249138","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"quant-ph","submitted_at":"2013-12-27T07:48:24Z","title_canon_sha256":"fb2b62775343c502124c04253d22f6515e56c96ce7e86301958b3d10579e8d91"},"schema_version":"1.0","source":{"id":"1312.7208","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.7208","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"arxiv_version","alias_value":"1312.7208v2","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.7208","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"pith_short_12","alias_value":"4QWRTTW2UOT7","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4QWRTTW2UOT7XAAH","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4QWRTTW2","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:1a752168a08114c3dddb356359dcb6593565fdc866e62173885ff89cc1a392c9","target":"graph","created_at":"2026-05-18T02:57:35Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Recent developments of technology have enabled atomic spins as the most sensitive inertial and magnetic sensors. Atomic spin gyroscope (magnetometer) essentially outputs the estimate of the inertial rotation rate (magnetic filed) to be measured. Conventional methods for estimating a static or quasi-static inertial rotation rate (magnetic field) employ the dependency relationship between the steady state signal and the input rotation rate (magnetic field). In this paper we present an extended Kalman filter (EKF) method for the atomic spin gyroscope and magnetometer. It is demonstrated that the ","authors_text":"Bo Qi, Lijun Liu, Shuming Cheng, Zairong Xi","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"quant-ph","submitted_at":"2013-12-27T07:48:24Z","title":"High Precision Inertial Rotation Rate and Magnetic Field Estimate via Extended Kalman Filter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.7208","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f31d60716e692d0793481ca140b0c80b1e05ad4952d98e9087ffb2951e56d267","target":"record","created_at":"2026-05-18T02:57:35Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1c6244b62576e86c91814f686b19c29971fa750186270421c97af7f789249138","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"quant-ph","submitted_at":"2013-12-27T07:48:24Z","title_canon_sha256":"fb2b62775343c502124c04253d22f6515e56c96ce7e86301958b3d10579e8d91"},"schema_version":"1.0","source":{"id":"1312.7208","kind":"arxiv","version":2}},"canonical_sha256":"e42d19cedaa3a7fb8007e3eabbd6137b47a0c3d572caa8e7137566210f4a3c3e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e42d19cedaa3a7fb8007e3eabbd6137b47a0c3d572caa8e7137566210f4a3c3e","first_computed_at":"2026-05-18T02:57:35.340666Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:57:35.340666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CiG7JzBqA2tlEOaXTf7GlwOwJGIfluEely9v/LwGQJRBjnHTzOvBuowAbAe8QReAUo25/ovi63VVsuFDb8XTCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:57:35.341338Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.7208","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f31d60716e692d0793481ca140b0c80b1e05ad4952d98e9087ffb2951e56d267","sha256:1a752168a08114c3dddb356359dcb6593565fdc866e62173885ff89cc1a392c9"],"state_sha256":"011188bf4b761ab31ae5778c845132b56a60c66a8f81fe9533649fc0420624e8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q42rcukGAEpAq+rRAua67ocJmnMfVT1F53yO1NpytrKljQNTC5BdEJkkSah4nlwUKpZyxz2sxQDoOoq2K5CLDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T20:00:13.813657Z","bundle_sha256":"c61b80c262aab8b44c5f6ccfd57adac2d3296c74820beb07af858d048fa12d31"}}