{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ORGJML6OL2PBVHMRPTTFHVWJQK","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":"7469ba46a3c7ae43f3b51f023cfa5e2834021eb5ca7645b58bb0b6a21c22beb6","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-04-04T13:37:19Z","title_canon_sha256":"14644e92513afd9dd8884058298d5bffc896e9734d7cee65e831f0effe2c7b84"},"schema_version":"1.0","source":{"id":"1604.00854","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.00854","created_at":"2026-05-18T01:17:36Z"},{"alias_kind":"arxiv_version","alias_value":"1604.00854v2","created_at":"2026-05-18T01:17:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.00854","created_at":"2026-05-18T01:17:36Z"},{"alias_kind":"pith_short_12","alias_value":"ORGJML6OL2PB","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"ORGJML6OL2PBVHMR","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"ORGJML6O","created_at":"2026-05-18T12:30:36Z"}],"graph_snapshots":[{"event_id":"sha256:afd4bc6c6885cf65e422e0d3e1392e1376eb9e51f6683ff415dde9e29d169185","target":"graph","created_at":"2026-05-18T01:17:36Z","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":"In this paper, an improved direction-of-arrival (DOA) estimation algorithm for circular and non-circular signals is proposed. Most state-of-the-art algorithms only deal with the DOA estimation problem for the maximal non-circularity rated and circular signals. However, common non-circularity rated signals are not taken into consideration. The proposed algorithm can estimates not only the maximal non-circularity rated and circular signals, but also the common non-circularity rated signals. Based on the property of the non-circularity phase and rate, the incident signals can be divided into thre","authors_text":"Liangtian Wan, Lihua Xie","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-04-04T13:37:19Z","title":"An Improved DOA Estimation Algorithm for Circular and Non-Circular Signals with High Resolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.00854","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":"sha256:45fac37d87e9fe36f708e2a2f7ef91fab9992788feb532768d405c0245894149","target":"record","created_at":"2026-05-18T01:17:36Z","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":"7469ba46a3c7ae43f3b51f023cfa5e2834021eb5ca7645b58bb0b6a21c22beb6","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-04-04T13:37:19Z","title_canon_sha256":"14644e92513afd9dd8884058298d5bffc896e9734d7cee65e831f0effe2c7b84"},"schema_version":"1.0","source":{"id":"1604.00854","kind":"arxiv","version":2}},"canonical_sha256":"744c962fce5e9e1a9d917ce653d6c982b47825849e4fff51b9ad103873e2468c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"744c962fce5e9e1a9d917ce653d6c982b47825849e4fff51b9ad103873e2468c","first_computed_at":"2026-05-18T01:17:36.543707Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:17:36.543707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"92ONnsQUMXIMTCx3aKlBmkXPS6OaWp/SX3eoBGI+T72ZAeqxfyj7gK0hJUqeeUK7Rv0vbbiwJUpQNvz/5ReQDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:17:36.544746Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.00854","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:45fac37d87e9fe36f708e2a2f7ef91fab9992788feb532768d405c0245894149","sha256:afd4bc6c6885cf65e422e0d3e1392e1376eb9e51f6683ff415dde9e29d169185"],"state_sha256":"6dbff44eda981642ffb0f7b031d231a9b0cfc5ff1eca85bfbfd76e764cbcee63"}