{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:37M3UOKZXIFITN6Z2NNBG4DE2R","short_pith_number":"pith:37M3UOKZ","canonical_record":{"source":{"id":"1701.01792","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-07T05:07:43Z","cross_cats_sorted":[],"title_canon_sha256":"835cfa64cfc0e7df67713c6ad87c8fd0253774ab50499cf704c429dedf7aae88","abstract_canon_sha256":"944c27d46b63b4d17a0415237f8a2c6db1b95d1133ce0772749560577f0492d4"},"schema_version":"1.0"},"canonical_sha256":"dfd9ba3959ba0a89b7d9d35a137064d45678acf5238447a175033f4a85ae99bd","source":{"kind":"arxiv","id":"1701.01792","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.01792","created_at":"2026-05-18T00:52:30Z"},{"alias_kind":"arxiv_version","alias_value":"1701.01792v1","created_at":"2026-05-18T00:52:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01792","created_at":"2026-05-18T00:52:30Z"},{"alias_kind":"pith_short_12","alias_value":"37M3UOKZXIFI","created_at":"2026-05-18T12:30:58Z"},{"alias_kind":"pith_short_16","alias_value":"37M3UOKZXIFITN6Z","created_at":"2026-05-18T12:30:58Z"},{"alias_kind":"pith_short_8","alias_value":"37M3UOKZ","created_at":"2026-05-18T12:30:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:37M3UOKZXIFITN6Z2NNBG4DE2R","target":"record","payload":{"canonical_record":{"source":{"id":"1701.01792","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-07T05:07:43Z","cross_cats_sorted":[],"title_canon_sha256":"835cfa64cfc0e7df67713c6ad87c8fd0253774ab50499cf704c429dedf7aae88","abstract_canon_sha256":"944c27d46b63b4d17a0415237f8a2c6db1b95d1133ce0772749560577f0492d4"},"schema_version":"1.0"},"canonical_sha256":"dfd9ba3959ba0a89b7d9d35a137064d45678acf5238447a175033f4a85ae99bd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:52:30.652963Z","signature_b64":"fnkgmWBn3SR0qQbhq1iO0gQOT7s+beJ4jiP0pt+F9YMURpvmePqfqs2xbjIFjOWOzgvSFcSbgZNOAEJAxeNIDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dfd9ba3959ba0a89b7d9d35a137064d45678acf5238447a175033f4a85ae99bd","last_reissued_at":"2026-05-18T00:52:30.652441Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:52:30.652441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.01792","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:52:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l78eULREtPMU5y+PxyFVRQRZmf8rbHsxexAN48l7B9/BP75v+7S15fDcuPbTG8mlMs4eYBYkM50GbdV6iVjCAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T23:21:58.634453Z"},"content_sha256":"ebefc6d4857865d70d85cc715039a750ba567edf621bf68a8f46bf59a674b600","schema_version":"1.0","event_id":"sha256:ebefc6d4857865d70d85cc715039a750ba567edf621bf68a8f46bf59a674b600"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:37M3UOKZXIFITN6Z2NNBG4DE2R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Instantaneous GNSS attitude determination: A Monte Carlo sampling approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Chao Han, Pei Chen, Xiucong Sun","submitted_at":"2017-01-07T05:07:43Z","abstract_excerpt":"A novel instantaneous GNSS ambiguity resolution approach which makes use of only single-frequency carrier phase measurements for ultra-short baseline attitude determination is proposed. The Monte Carlo sampling method is employed to obtain the probability density function of ambiguities from a quaternion-based GNSS-attitude model and the LAMBDA method strengthened with a screening mechanism is then utilized to fix the integer values. Experimental results show that 100% success rate could be achieved for ultra-short baselines."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01792","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:52:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xz4WCM9UfWEY0hgol5unN6K69EWfK7rfd+2zX2iMvha5/VIJRCYZOQtkUI6E5l+VGFsbym7fJuqvXnvbfL51Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T23:21:58.635070Z"},"content_sha256":"b2452dc1c4847df631c8978fe411c19b68d5bb498ea8c88f9e23ed2889957bdf","schema_version":"1.0","event_id":"sha256:b2452dc1c4847df631c8978fe411c19b68d5bb498ea8c88f9e23ed2889957bdf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/37M3UOKZXIFITN6Z2NNBG4DE2R/bundle.json","state_url":"https://pith.science/pith/37M3UOKZXIFITN6Z2NNBG4DE2R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/37M3UOKZXIFITN6Z2NNBG4DE2R/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":"2026-06-04T23:21:58Z","links":{"resolver":"https://pith.science/pith/37M3UOKZXIFITN6Z2NNBG4DE2R","bundle":"https://pith.science/pith/37M3UOKZXIFITN6Z2NNBG4DE2R/bundle.json","state":"https://pith.science/pith/37M3UOKZXIFITN6Z2NNBG4DE2R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/37M3UOKZXIFITN6Z2NNBG4DE2R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:37M3UOKZXIFITN6Z2NNBG4DE2R","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":"944c27d46b63b4d17a0415237f8a2c6db1b95d1133ce0772749560577f0492d4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-07T05:07:43Z","title_canon_sha256":"835cfa64cfc0e7df67713c6ad87c8fd0253774ab50499cf704c429dedf7aae88"},"schema_version":"1.0","source":{"id":"1701.01792","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.01792","created_at":"2026-05-18T00:52:30Z"},{"alias_kind":"arxiv_version","alias_value":"1701.01792v1","created_at":"2026-05-18T00:52:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01792","created_at":"2026-05-18T00:52:30Z"},{"alias_kind":"pith_short_12","alias_value":"37M3UOKZXIFI","created_at":"2026-05-18T12:30:58Z"},{"alias_kind":"pith_short_16","alias_value":"37M3UOKZXIFITN6Z","created_at":"2026-05-18T12:30:58Z"},{"alias_kind":"pith_short_8","alias_value":"37M3UOKZ","created_at":"2026-05-18T12:30:58Z"}],"graph_snapshots":[{"event_id":"sha256:b2452dc1c4847df631c8978fe411c19b68d5bb498ea8c88f9e23ed2889957bdf","target":"graph","created_at":"2026-05-18T00:52:30Z","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":"A novel instantaneous GNSS ambiguity resolution approach which makes use of only single-frequency carrier phase measurements for ultra-short baseline attitude determination is proposed. The Monte Carlo sampling method is employed to obtain the probability density function of ambiguities from a quaternion-based GNSS-attitude model and the LAMBDA method strengthened with a screening mechanism is then utilized to fix the integer values. Experimental results show that 100% success rate could be achieved for ultra-short baselines.","authors_text":"Chao Han, Pei Chen, Xiucong Sun","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-07T05:07:43Z","title":"Instantaneous GNSS attitude determination: A Monte Carlo sampling approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01792","kind":"arxiv","version":1},"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:ebefc6d4857865d70d85cc715039a750ba567edf621bf68a8f46bf59a674b600","target":"record","created_at":"2026-05-18T00:52:30Z","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":"944c27d46b63b4d17a0415237f8a2c6db1b95d1133ce0772749560577f0492d4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-07T05:07:43Z","title_canon_sha256":"835cfa64cfc0e7df67713c6ad87c8fd0253774ab50499cf704c429dedf7aae88"},"schema_version":"1.0","source":{"id":"1701.01792","kind":"arxiv","version":1}},"canonical_sha256":"dfd9ba3959ba0a89b7d9d35a137064d45678acf5238447a175033f4a85ae99bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dfd9ba3959ba0a89b7d9d35a137064d45678acf5238447a175033f4a85ae99bd","first_computed_at":"2026-05-18T00:52:30.652441Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:30.652441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fnkgmWBn3SR0qQbhq1iO0gQOT7s+beJ4jiP0pt+F9YMURpvmePqfqs2xbjIFjOWOzgvSFcSbgZNOAEJAxeNIDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:30.652963Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.01792","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ebefc6d4857865d70d85cc715039a750ba567edf621bf68a8f46bf59a674b600","sha256:b2452dc1c4847df631c8978fe411c19b68d5bb498ea8c88f9e23ed2889957bdf"],"state_sha256":"f2c3d85595f5b95902f0edf6768ca3fdb718e6228f693e357b08c64fc46428bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z6tms4xIvaHFr2blQ7euabctnwYbn8ruZ2PbwfqPvDlbTZ9M9zulOgMq2EcgBksiAs0FpVlkgrw2y2VEAqivBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T23:21:58.638658Z","bundle_sha256":"8fcd267ff5dd5a887645048dfff82ab3a5df4142e6e2a273bd028f9846dfd2eb"}}