{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:CADROXUJZD7S6GKZ2XUNYXAW6F","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":"c5409cf0fc3086c1adc22eda6bf0de95f91ddefbc4cbce6b6e207445bbec6281","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.ins-det","submitted_at":"2017-01-09T20:33:23Z","title_canon_sha256":"ae7b84be0475e60932e6f0e62ac5be6739135945e7360973b747109debbb55a3"},"schema_version":"1.0","source":{"id":"1701.02342","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.02342","created_at":"2026-05-18T00:53:04Z"},{"alias_kind":"arxiv_version","alias_value":"1701.02342v1","created_at":"2026-05-18T00:53:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.02342","created_at":"2026-05-18T00:53:04Z"},{"alias_kind":"pith_short_12","alias_value":"CADROXUJZD7S","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CADROXUJZD7S6GKZ","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CADROXUJ","created_at":"2026-05-18T12:31:10Z"}],"graph_snapshots":[{"event_id":"sha256:cdc7905d154bfe71b91db3ada01ab9e61c24d08af6d533ff9496d6e73ec0bb5d","target":"graph","created_at":"2026-05-18T00:53:04Z","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 rail-mounted synthetic aperture radar has been constructed to operate at W-band (75 - 110 GHz) and a THz band (325 - 500 GHz) in order to ascertain its ability to locate isolated small, visually obscured metallic scatterers embedded in highly scattering dielectric hosts that are either semi-transparent or opaque. A top view 2D algorithm was used to reconstruct scenes from the acquired data, locating metallic scatterers at W-band with high range and cross-range resolution of 4.3 and 2 mm, respectively, and with improved range resolution of 0.86 mm at the THz band. Millimeter-sized metallic sc","authors_text":"Henry O. Everitt, Jonathan T. Richard","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.ins-det","submitted_at":"2017-01-09T20:33:23Z","title":"Millimeter Wave and Terahertz Synthetic Aperture Radar for Locating Metallic Scatterers Embedded in Scattering Media"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.02342","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:cbfb3542ddcce9c3b7a679f06ec1bc97b68595a6d20b8a37789a4a49a49d1eb0","target":"record","created_at":"2026-05-18T00:53:04Z","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":"c5409cf0fc3086c1adc22eda6bf0de95f91ddefbc4cbce6b6e207445bbec6281","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.ins-det","submitted_at":"2017-01-09T20:33:23Z","title_canon_sha256":"ae7b84be0475e60932e6f0e62ac5be6739135945e7360973b747109debbb55a3"},"schema_version":"1.0","source":{"id":"1701.02342","kind":"arxiv","version":1}},"canonical_sha256":"1007175e89c8ff2f1959d5e8dc5c16f1578501b301751a8a1493cb208cc05961","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1007175e89c8ff2f1959d5e8dc5c16f1578501b301751a8a1493cb208cc05961","first_computed_at":"2026-05-18T00:53:04.492464Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:53:04.492464Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"85fflKTfcmk09AVh2lg9cjcfWDHJI5xzQ8ilMQD9Ec5lm3xio4fVsIfQL7t0qtrG1rkjHqAB8dVQuqovaX4eAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:53:04.493233Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.02342","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cbfb3542ddcce9c3b7a679f06ec1bc97b68595a6d20b8a37789a4a49a49d1eb0","sha256:cdc7905d154bfe71b91db3ada01ab9e61c24d08af6d533ff9496d6e73ec0bb5d"],"state_sha256":"91af9527b1f0010115982198f1f4f6133efa863790076e01f967bdd14db3fbc6"}