{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:FBLR4OVXJAJAZMBQNNTYECYMW7","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":"a0fe3751c5198189b2c4baf66ea2c4a6bd7a63b47623cebd763ce45a68eec463","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-04-23T17:58:27Z","title_canon_sha256":"85e946d011e5fd4cc45a07098fa3b97b27f16046ae768bba5523072b8f19550f"},"schema_version":"1.0","source":{"id":"1804.08608","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.08608","created_at":"2026-05-18T00:17:47Z"},{"alias_kind":"arxiv_version","alias_value":"1804.08608v1","created_at":"2026-05-18T00:17:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.08608","created_at":"2026-05-18T00:17:47Z"},{"alias_kind":"pith_short_12","alias_value":"FBLR4OVXJAJA","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"FBLR4OVXJAJAZMBQ","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"FBLR4OVX","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:94ec83bf1254de025b2e3a76f54b03311a558ab842f744b3bc416998c9c55799","target":"graph","created_at":"2026-05-18T00:17:47Z","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":"We propose a design strategy for optimizing antenna positions in linear arrays for far-field Direction of Arrival (DoA) estimation of narrow-band sources in collocated MIMO radar. Our methodology allows to consider any spatial constraints and number of antennas, using as optimization function the Weiss- Weinstein bound formulated for an observation model with random target phase and known SNR, over a pre-determined Field-of-View (FoV). Optimized arrays are calculated for the typical case of a 77GHz MIMO radar of 3Tx and 4Rx channels. Simulations demonstrate a performance improvement of the pro","authors_text":"C. Greiff, D. Mateos-N\\'u\\~nez, M. A. Gonz\\'alez-Huici, R. Simoni","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-04-23T17:58:27Z","title":"Constrained optimal design of automotive radar arrays using the Weiss-Weinstein Bound"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.08608","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:cdaf796f922ce053278597990e6f8d2b535e86f6d5a61ea76daf3da0ba3d817f","target":"record","created_at":"2026-05-18T00:17:47Z","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":"a0fe3751c5198189b2c4baf66ea2c4a6bd7a63b47623cebd763ce45a68eec463","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-04-23T17:58:27Z","title_canon_sha256":"85e946d011e5fd4cc45a07098fa3b97b27f16046ae768bba5523072b8f19550f"},"schema_version":"1.0","source":{"id":"1804.08608","kind":"arxiv","version":1}},"canonical_sha256":"28571e3ab748120cb0306b67820b0cb7f8b467bf77b50dd681a45438508e004b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"28571e3ab748120cb0306b67820b0cb7f8b467bf77b50dd681a45438508e004b","first_computed_at":"2026-05-18T00:17:47.735402Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:17:47.735402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qv1BMHaQ/kyU942iFumv88ayG0sdVkTgH1fOriCqJ++0TlbbYP0J26aUz7q3GVi5gs1BX9B4yt8rAQ6YiwzmAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:17:47.736058Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.08608","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cdaf796f922ce053278597990e6f8d2b535e86f6d5a61ea76daf3da0ba3d817f","sha256:94ec83bf1254de025b2e3a76f54b03311a558ab842f744b3bc416998c9c55799"],"state_sha256":"b16f34119bbf8611df3181e1b7b08535dd54198c3b728340f0efe44e7f51d9ad"}