{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:URJ3NIHDUU2J4R5IX3KH2XQHEN","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":"a5bb23ea60a9f987b32b281f9513d83264afa6d02977541236dbc64eb1ca9c78","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-01-22T07:39:20Z","title_canon_sha256":"3e3558fbbd5f96e6fd10eca607a7bf04a94c7b39329ab84642ead0aefc803fa4"},"schema_version":"1.0","source":{"id":"2101.08982","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.08982","created_at":"2026-07-05T02:08:52Z"},{"alias_kind":"arxiv_version","alias_value":"2101.08982v1","created_at":"2026-07-05T02:08:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.08982","created_at":"2026-07-05T02:08:52Z"},{"alias_kind":"pith_short_12","alias_value":"URJ3NIHDUU2J","created_at":"2026-07-05T02:08:52Z"},{"alias_kind":"pith_short_16","alias_value":"URJ3NIHDUU2J4R5I","created_at":"2026-07-05T02:08:52Z"},{"alias_kind":"pith_short_8","alias_value":"URJ3NIHD","created_at":"2026-07-05T02:08:52Z"}],"graph_snapshots":[{"event_id":"sha256:7cf0ffe333d5a7ccde624fc8a4698a1b859c547bd10910725c9aad18a146b148","target":"graph","created_at":"2026-07-05T02:08:52Z","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/2101.08982/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Multiple-input multiple-output (MIMO) array based millimeter-wave (MMW) imaging has a tangible prospect in applications of concealed weapons detection. A near-field imaging algorithm based on wavenumber domain processing is proposed for a cylindrical MIMO array scheme with uniformly spaced transmit and receive antennas over both the vertical and horizontal-arc directions. The spectrum aliasing associated with the proposed MIMO array is analyzed through a zero-filling discrete-time Fourier transform. The analysis shows that an undersampled array can be used in recovering the MMW image by a wave","authors_text":"Guoqiang Zhao, Moeness G. Amin, Shiyong Li, Shuoguang Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-01-22T07:39:20Z","title":"Efficient Near-Field Imaging Using Cylindrical MIMO Arrays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.08982","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":"sha256:57b4919a1841c04bba86855d1324fe0de6da95467b8b76aa8a9ca0b420da83be","target":"record","created_at":"2026-07-05T02:08:52Z","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":"a5bb23ea60a9f987b32b281f9513d83264afa6d02977541236dbc64eb1ca9c78","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-01-22T07:39:20Z","title_canon_sha256":"3e3558fbbd5f96e6fd10eca607a7bf04a94c7b39329ab84642ead0aefc803fa4"},"schema_version":"1.0","source":{"id":"2101.08982","kind":"arxiv","version":1}},"canonical_sha256":"a453b6a0e3a5349e47a8bed47d5e07234db4aaaea4d1aaa7e4f2f8f054d92d34","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a453b6a0e3a5349e47a8bed47d5e07234db4aaaea4d1aaa7e4f2f8f054d92d34","first_computed_at":"2026-07-05T02:08:52.688768Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:08:52.688768Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0l0z4NG28kLjxvvB9qRMOTq2n14oYF2uPzk9yD3wkJrYrhjQCOubP56/blpu62XED0EilO/UFQH/MgxSqWbOAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:08:52.689294Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.08982","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:57b4919a1841c04bba86855d1324fe0de6da95467b8b76aa8a9ca0b420da83be","sha256:7cf0ffe333d5a7ccde624fc8a4698a1b859c547bd10910725c9aad18a146b148"],"state_sha256":"f215a9531292e418d072f749a1f58082d9074ab3e1e42d273c1298fbeada5dd0"}