{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:3SZ4EOI4XCPCRQBJ7AGTL3TV5S","short_pith_number":"pith:3SZ4EOI4","canonical_record":{"source":{"id":"2404.07472","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-04-11T04:42:01Z","cross_cats_sorted":[],"title_canon_sha256":"bfc224aff83152d4d01d2105a6b967ce9f67b0ca04dc4fe0f6b056c905a564d8","abstract_canon_sha256":"bfbae40020238f2f09ac939ff60d944f9dfd4d442364af6eec482e71291274da"},"schema_version":"1.0"},"canonical_sha256":"dcb3c2391cb89e28c029f80d35ee75ec8bb053b2cb9652c3d61db3313d5ad69b","source":{"kind":"arxiv","id":"2404.07472","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.07472","created_at":"2026-07-05T08:25:02Z"},{"alias_kind":"arxiv_version","alias_value":"2404.07472v1","created_at":"2026-07-05T08:25:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.07472","created_at":"2026-07-05T08:25:02Z"},{"alias_kind":"pith_short_12","alias_value":"3SZ4EOI4XCPC","created_at":"2026-07-05T08:25:02Z"},{"alias_kind":"pith_short_16","alias_value":"3SZ4EOI4XCPCRQBJ","created_at":"2026-07-05T08:25:02Z"},{"alias_kind":"pith_short_8","alias_value":"3SZ4EOI4","created_at":"2026-07-05T08:25:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:3SZ4EOI4XCPCRQBJ7AGTL3TV5S","target":"record","payload":{"canonical_record":{"source":{"id":"2404.07472","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-04-11T04:42:01Z","cross_cats_sorted":[],"title_canon_sha256":"bfc224aff83152d4d01d2105a6b967ce9f67b0ca04dc4fe0f6b056c905a564d8","abstract_canon_sha256":"bfbae40020238f2f09ac939ff60d944f9dfd4d442364af6eec482e71291274da"},"schema_version":"1.0"},"canonical_sha256":"dcb3c2391cb89e28c029f80d35ee75ec8bb053b2cb9652c3d61db3313d5ad69b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:25:02.572626Z","signature_b64":"lFQ+2NLVxt/f7okj6BCDtbspsZ++xMtHt2JDfUbqdtn58Yq3QFxh9yyLT4sQ5NkG+Olf6Gl/tlJreQ6byXy0AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dcb3c2391cb89e28c029f80d35ee75ec8bb053b2cb9652c3d61db3313d5ad69b","last_reissued_at":"2026-07-05T08:25:02.572069Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:25:02.572069Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.07472","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":"2026-07-05T08:25:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X5bRjShZDxqsjupkpVFV9+SrRGViq5mE710jI6jK9DDUHwVw/0nNLVyVt6AN0MUDTFcgJNN5KlVc/+QdjKPjDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:34:27.423851Z"},"content_sha256":"6c9714148d25a43a15d6985d0bf7e0c583ff87783ced00820da7e6bdb7b9014e","schema_version":"1.0","event_id":"sha256:6c9714148d25a43a15d6985d0bf7e0c583ff87783ced00820da7e6bdb7b9014e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:3SZ4EOI4XCPCRQBJ7AGTL3TV5S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cramer-Rao Bounds for Near-Field Sensing: A Generic Modular Architecture","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Chunwei Meng, Dingyou Ma, Xu Chen, Yuanwei Liu, Zhiyong Feng","submitted_at":"2024-04-11T04:42:01Z","abstract_excerpt":"A generic modular array architecture is proposed, featuring uniform/non-uniform subarray layouts that allows for flexible deployment. The bistatic near-field sensing system is considered, where the target is located in the near-field of the whole modular array and the far-field of each subarray. Then, the closed-form expressions of Cramer-Rao bounds (CRBs) for range and angle estimations are derived based on the hybrid spherical and planar wave model (HSPM). Simulation results validate the accuracy of the derived closed-form CRBs and demonstrate that: i) The HSPM with varying angles of arrival"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.07472","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.07472/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T08:25:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pzIfKRxD/hu828VG6BHX6XGYqsrIiYMsCXyf12xgcDSXcBb+G+PbBsuGGE/ySEsdn0g2Utsnp8aziWhGTwbzCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:34:27.424667Z"},"content_sha256":"484568dee34f04592f7df40e4f000d1bc593ac3da9025c029da21c09a081e19d","schema_version":"1.0","event_id":"sha256:484568dee34f04592f7df40e4f000d1bc593ac3da9025c029da21c09a081e19d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3SZ4EOI4XCPCRQBJ7AGTL3TV5S/bundle.json","state_url":"https://pith.science/pith/3SZ4EOI4XCPCRQBJ7AGTL3TV5S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3SZ4EOI4XCPCRQBJ7AGTL3TV5S/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":"2026-08-05T18:34:27Z","links":{"resolver":"https://pith.science/pith/3SZ4EOI4XCPCRQBJ7AGTL3TV5S","bundle":"https://pith.science/pith/3SZ4EOI4XCPCRQBJ7AGTL3TV5S/bundle.json","state":"https://pith.science/pith/3SZ4EOI4XCPCRQBJ7AGTL3TV5S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3SZ4EOI4XCPCRQBJ7AGTL3TV5S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:3SZ4EOI4XCPCRQBJ7AGTL3TV5S","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":"bfbae40020238f2f09ac939ff60d944f9dfd4d442364af6eec482e71291274da","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-04-11T04:42:01Z","title_canon_sha256":"bfc224aff83152d4d01d2105a6b967ce9f67b0ca04dc4fe0f6b056c905a564d8"},"schema_version":"1.0","source":{"id":"2404.07472","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.07472","created_at":"2026-07-05T08:25:02Z"},{"alias_kind":"arxiv_version","alias_value":"2404.07472v1","created_at":"2026-07-05T08:25:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.07472","created_at":"2026-07-05T08:25:02Z"},{"alias_kind":"pith_short_12","alias_value":"3SZ4EOI4XCPC","created_at":"2026-07-05T08:25:02Z"},{"alias_kind":"pith_short_16","alias_value":"3SZ4EOI4XCPCRQBJ","created_at":"2026-07-05T08:25:02Z"},{"alias_kind":"pith_short_8","alias_value":"3SZ4EOI4","created_at":"2026-07-05T08:25:02Z"}],"graph_snapshots":[{"event_id":"sha256:484568dee34f04592f7df40e4f000d1bc593ac3da9025c029da21c09a081e19d","target":"graph","created_at":"2026-07-05T08:25:02Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2404.07472/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A generic modular array architecture is proposed, featuring uniform/non-uniform subarray layouts that allows for flexible deployment. The bistatic near-field sensing system is considered, where the target is located in the near-field of the whole modular array and the far-field of each subarray. Then, the closed-form expressions of Cramer-Rao bounds (CRBs) for range and angle estimations are derived based on the hybrid spherical and planar wave model (HSPM). Simulation results validate the accuracy of the derived closed-form CRBs and demonstrate that: i) The HSPM with varying angles of arrival","authors_text":"Chunwei Meng, Dingyou Ma, Xu Chen, Yuanwei Liu, Zhiyong Feng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-04-11T04:42:01Z","title":"Cramer-Rao Bounds for Near-Field Sensing: A Generic Modular Architecture"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.07472","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":"sha256:6c9714148d25a43a15d6985d0bf7e0c583ff87783ced00820da7e6bdb7b9014e","target":"record","created_at":"2026-07-05T08:25:02Z","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":"bfbae40020238f2f09ac939ff60d944f9dfd4d442364af6eec482e71291274da","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-04-11T04:42:01Z","title_canon_sha256":"bfc224aff83152d4d01d2105a6b967ce9f67b0ca04dc4fe0f6b056c905a564d8"},"schema_version":"1.0","source":{"id":"2404.07472","kind":"arxiv","version":1}},"canonical_sha256":"dcb3c2391cb89e28c029f80d35ee75ec8bb053b2cb9652c3d61db3313d5ad69b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dcb3c2391cb89e28c029f80d35ee75ec8bb053b2cb9652c3d61db3313d5ad69b","first_computed_at":"2026-07-05T08:25:02.572069Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:25:02.572069Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lFQ+2NLVxt/f7okj6BCDtbspsZ++xMtHt2JDfUbqdtn58Yq3QFxh9yyLT4sQ5NkG+Olf6Gl/tlJreQ6byXy0AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T08:25:02.572626Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.07472","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6c9714148d25a43a15d6985d0bf7e0c583ff87783ced00820da7e6bdb7b9014e","sha256:484568dee34f04592f7df40e4f000d1bc593ac3da9025c029da21c09a081e19d"],"state_sha256":"153635266061a78e7a17009a0135284fc5aba52d8b9d166ca1d19a9665a5fda7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gb5jUfzD0tSUCI8tHbNq+y2SCb9FXgLA0iXnYB3ge7H8WJjB4n+/dWtVWS88/WMk308bIcKMXUf/j3Zwg6zXAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T18:34:27.441794Z","bundle_sha256":"bed78c8dd11e6e904adc60225731fd27b520fce2583df7792b1fd1506c67e484"}}