{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:2LVL3FEFOWEAW5V2AFBPI3BNBW","short_pith_number":"pith:2LVL3FEF","canonical_record":{"source":{"id":"2102.09719","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-02-19T03:21:34Z","cross_cats_sorted":[],"title_canon_sha256":"d187cd8930f3ebcbc4e6000a68ded62c3d6fef397d6bed1f98e774506c6cc4b8","abstract_canon_sha256":"f52ee25e531a8fc71e13e9ce44cc70dcddad68162263fff22cf7cb9990eebf8c"},"schema_version":"1.0"},"canonical_sha256":"d2eabd948575880b76ba0142f46c2d0dabf9249f50b3769038dd2783dcf304a6","source":{"kind":"arxiv","id":"2102.09719","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.09719","created_at":"2026-07-05T03:02:46Z"},{"alias_kind":"arxiv_version","alias_value":"2102.09719v1","created_at":"2026-07-05T03:02:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.09719","created_at":"2026-07-05T03:02:46Z"},{"alias_kind":"pith_short_12","alias_value":"2LVL3FEFOWEA","created_at":"2026-07-05T03:02:46Z"},{"alias_kind":"pith_short_16","alias_value":"2LVL3FEFOWEAW5V2","created_at":"2026-07-05T03:02:46Z"},{"alias_kind":"pith_short_8","alias_value":"2LVL3FEF","created_at":"2026-07-05T03:02:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:2LVL3FEFOWEAW5V2AFBPI3BNBW","target":"record","payload":{"canonical_record":{"source":{"id":"2102.09719","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-02-19T03:21:34Z","cross_cats_sorted":[],"title_canon_sha256":"d187cd8930f3ebcbc4e6000a68ded62c3d6fef397d6bed1f98e774506c6cc4b8","abstract_canon_sha256":"f52ee25e531a8fc71e13e9ce44cc70dcddad68162263fff22cf7cb9990eebf8c"},"schema_version":"1.0"},"canonical_sha256":"d2eabd948575880b76ba0142f46c2d0dabf9249f50b3769038dd2783dcf304a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:02:46.280242Z","signature_b64":"Poj6A2mT///lk7qvDjLRUu7KHJd20PMq8oh3XlK3VUzvpGa/Y1hMR7AX0K25jBHcHWVjrL+MJgEhcIxwvZ+jBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d2eabd948575880b76ba0142f46c2d0dabf9249f50b3769038dd2783dcf304a6","last_reissued_at":"2026-07-05T03:02:46.279779Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:02:46.279779Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.09719","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":"2026-07-05T03:02:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TYf6hIdR2vRanqunwhefvRR4yQC1h7VVck4W2l8Qe5kNjyHr9vBb+uetORImYiVOJaK/09paFKq0na/y7WFwCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T22:56:15.689543Z"},"content_sha256":"8ded88a03d357fde1cbfc3b5e984bfa9fafd7286d19ab841a9ef67b624c652db","schema_version":"1.0","event_id":"sha256:8ded88a03d357fde1cbfc3b5e984bfa9fafd7286d19ab841a9ef67b624c652db"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:2LVL3FEFOWEAW5V2AFBPI3BNBW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Signal Detection in Distributed MIMO Radar with Non-Orthogonal Waveforms and Sync Errors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Cengcang Zeng, Fangzhou Wang, Hongbin Li, Mark A. Govoni","submitted_at":"2021-02-19T03:21:34Z","abstract_excerpt":"Although routinely utilized in literature, orthogonal waveforms may lose orthogonality in distributed multi-input multi-output (MIMO) radar with spatially separated transmit (TX) and receive (RX) antennas, as the waveforms may experience distinct delays and Doppler frequency offsets unique to different TX-RX propagation paths. In such cases, the output of each waveform-specific matched filter (MF), employed to unravel the waveforms at the RXs, contains both an \\auto term and multiple cross terms, i.e., the filtered response of the desired and, respectively, undesired waveforms. We consider the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.09719","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/2102.09719/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":"2026-07-05T03:02:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SsI8QydHTaEGuqJA+4BLqe2uJAcAex8G1wDxhkIGBRGc1apfH1Q0ZQVhH0jmUy7leE+DPD6ZO1yyqJT6DpBOCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T22:56:15.689903Z"},"content_sha256":"723974b703b1e407d21f18eb965b52ac05d8295207708790d51624de89c94804","schema_version":"1.0","event_id":"sha256:723974b703b1e407d21f18eb965b52ac05d8295207708790d51624de89c94804"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2LVL3FEFOWEAW5V2AFBPI3BNBW/bundle.json","state_url":"https://pith.science/pith/2LVL3FEFOWEAW5V2AFBPI3BNBW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2LVL3FEFOWEAW5V2AFBPI3BNBW/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":"2026-07-08T22:56:15Z","links":{"resolver":"https://pith.science/pith/2LVL3FEFOWEAW5V2AFBPI3BNBW","bundle":"https://pith.science/pith/2LVL3FEFOWEAW5V2AFBPI3BNBW/bundle.json","state":"https://pith.science/pith/2LVL3FEFOWEAW5V2AFBPI3BNBW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2LVL3FEFOWEAW5V2AFBPI3BNBW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:2LVL3FEFOWEAW5V2AFBPI3BNBW","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":"f52ee25e531a8fc71e13e9ce44cc70dcddad68162263fff22cf7cb9990eebf8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-02-19T03:21:34Z","title_canon_sha256":"d187cd8930f3ebcbc4e6000a68ded62c3d6fef397d6bed1f98e774506c6cc4b8"},"schema_version":"1.0","source":{"id":"2102.09719","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.09719","created_at":"2026-07-05T03:02:46Z"},{"alias_kind":"arxiv_version","alias_value":"2102.09719v1","created_at":"2026-07-05T03:02:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.09719","created_at":"2026-07-05T03:02:46Z"},{"alias_kind":"pith_short_12","alias_value":"2LVL3FEFOWEA","created_at":"2026-07-05T03:02:46Z"},{"alias_kind":"pith_short_16","alias_value":"2LVL3FEFOWEAW5V2","created_at":"2026-07-05T03:02:46Z"},{"alias_kind":"pith_short_8","alias_value":"2LVL3FEF","created_at":"2026-07-05T03:02:46Z"}],"graph_snapshots":[{"event_id":"sha256:723974b703b1e407d21f18eb965b52ac05d8295207708790d51624de89c94804","target":"graph","created_at":"2026-07-05T03:02:46Z","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/2102.09719/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Although routinely utilized in literature, orthogonal waveforms may lose orthogonality in distributed multi-input multi-output (MIMO) radar with spatially separated transmit (TX) and receive (RX) antennas, as the waveforms may experience distinct delays and Doppler frequency offsets unique to different TX-RX propagation paths. In such cases, the output of each waveform-specific matched filter (MF), employed to unravel the waveforms at the RXs, contains both an \\auto term and multiple cross terms, i.e., the filtered response of the desired and, respectively, undesired waveforms. We consider the","authors_text":"Cengcang Zeng, Fangzhou Wang, Hongbin Li, Mark A. Govoni","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-02-19T03:21:34Z","title":"Signal Detection in Distributed MIMO Radar with Non-Orthogonal Waveforms and Sync Errors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.09719","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":"sha256:8ded88a03d357fde1cbfc3b5e984bfa9fafd7286d19ab841a9ef67b624c652db","target":"record","created_at":"2026-07-05T03:02:46Z","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":"f52ee25e531a8fc71e13e9ce44cc70dcddad68162263fff22cf7cb9990eebf8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2021-02-19T03:21:34Z","title_canon_sha256":"d187cd8930f3ebcbc4e6000a68ded62c3d6fef397d6bed1f98e774506c6cc4b8"},"schema_version":"1.0","source":{"id":"2102.09719","kind":"arxiv","version":1}},"canonical_sha256":"d2eabd948575880b76ba0142f46c2d0dabf9249f50b3769038dd2783dcf304a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d2eabd948575880b76ba0142f46c2d0dabf9249f50b3769038dd2783dcf304a6","first_computed_at":"2026-07-05T03:02:46.279779Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:02:46.279779Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Poj6A2mT///lk7qvDjLRUu7KHJd20PMq8oh3XlK3VUzvpGa/Y1hMR7AX0K25jBHcHWVjrL+MJgEhcIxwvZ+jBw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:02:46.280242Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.09719","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ded88a03d357fde1cbfc3b5e984bfa9fafd7286d19ab841a9ef67b624c652db","sha256:723974b703b1e407d21f18eb965b52ac05d8295207708790d51624de89c94804"],"state_sha256":"c524eacc09b018aadaa246169f0ae2c5da9ea4112539bbff1b3b14d26fd6837b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"22ReNP0KVnP3Umstws8HLn2DmUh/KkcYeWUpxrCTvRHLwDU991Fh0GQ8MG1aeVAyVaLhxS7Su2D3aS/L9xe6BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-08T22:56:15.691933Z","bundle_sha256":"5c0957fb44a577c2a3bf1bf0272f80c1684c2ef3e317ca6b11d04c2078c0e79c"}}