{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ZY4QV2V75JFNHFEGXAQS6DKYSV","short_pith_number":"pith:ZY4QV2V7","canonical_record":{"source":{"id":"1808.04938","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-08-15T01:41:16Z","cross_cats_sorted":[],"title_canon_sha256":"287be1fc7c00c92318419dbf0c9cb7457a8d6e33ee69327a1e83041f6e51467e","abstract_canon_sha256":"56f130264ca202fb2e6f01c29486862784070cc7619211203cac323f1d8b6b52"},"schema_version":"1.0"},"canonical_sha256":"ce390aeabfea4ad39486b8212f0d58955da15f8d93416610f14801436f971fe9","source":{"kind":"arxiv","id":"1808.04938","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.04938","created_at":"2026-05-18T00:08:02Z"},{"alias_kind":"arxiv_version","alias_value":"1808.04938v1","created_at":"2026-05-18T00:08:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.04938","created_at":"2026-05-18T00:08:02Z"},{"alias_kind":"pith_short_12","alias_value":"ZY4QV2V75JFN","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZY4QV2V75JFNHFEG","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZY4QV2V7","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ZY4QV2V75JFNHFEGXAQS6DKYSV","target":"record","payload":{"canonical_record":{"source":{"id":"1808.04938","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-08-15T01:41:16Z","cross_cats_sorted":[],"title_canon_sha256":"287be1fc7c00c92318419dbf0c9cb7457a8d6e33ee69327a1e83041f6e51467e","abstract_canon_sha256":"56f130264ca202fb2e6f01c29486862784070cc7619211203cac323f1d8b6b52"},"schema_version":"1.0"},"canonical_sha256":"ce390aeabfea4ad39486b8212f0d58955da15f8d93416610f14801436f971fe9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:02.140611Z","signature_b64":"zjsYMc3q0lLaIs+ijnvajNwG59RkhUYZd0NXLF72kHdjxEpwQIQ2GY2Othu2nkhVdOu3bf2d7WhdqKUV0oQxAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce390aeabfea4ad39486b8212f0d58955da15f8d93416610f14801436f971fe9","last_reissued_at":"2026-05-18T00:08:02.140007Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:02.140007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.04938","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":"2026-05-18T00:08:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Oc49SEtjoJPbjEwYxSJu4ENZT4TXaU0NMVh+Xwqv/FS8Cvg0xYj+pHmZGxhslNm7Wc5eYX3zJnRIE+vTTCX2AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T07:01:43.100923Z"},"content_sha256":"a82959473ba4e2fa987c36bb9ec42933248da52d3dff450811be459e123ba1ec","schema_version":"1.0","event_id":"sha256:a82959473ba4e2fa987c36bb9ec42933248da52d3dff450811be459e123ba1ec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ZY4QV2V75JFNHFEGXAQS6DKYSV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sparse Transmit Array Design for Dual-Function Radar Communications by Antenna Selection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Aboulnasr Hassanien, Moeness Amin, Xiangrong Wang","submitted_at":"2018-08-15T01:41:16Z","abstract_excerpt":"Dual-function radar communications (DFRC) systems have recently been proposed to enable the coexistence of radar and wireless communications, which in turn alleviates the increased spectrum congestion crisis. In this paper, we consider the problem of sparse transmit array design for DFRC systems by antenna selection where same or different antennas are assigned to different functions. We consider three different types of DFRC systems which implement different simultaneous beamformers associated with single and different sparse arrays with shared aperture. We utilize the array configuration as "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.04938","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":""},"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":"2026-05-18T00:08:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d0ATuY6YmAdE/ot/79AskAXFl5+qsNl50w/PIzFbCH4GJVrkVuIPm60K3M6F7XKPIk1mIoytn1Q8bQjuCkt6CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T07:01:43.101618Z"},"content_sha256":"1feab3eef6694616136d58efdecd456ce1cdcd5386086112f50a6b66ed97764e","schema_version":"1.0","event_id":"sha256:1feab3eef6694616136d58efdecd456ce1cdcd5386086112f50a6b66ed97764e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZY4QV2V75JFNHFEGXAQS6DKYSV/bundle.json","state_url":"https://pith.science/pith/ZY4QV2V75JFNHFEGXAQS6DKYSV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZY4QV2V75JFNHFEGXAQS6DKYSV/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":"2026-06-09T07:01:43Z","links":{"resolver":"https://pith.science/pith/ZY4QV2V75JFNHFEGXAQS6DKYSV","bundle":"https://pith.science/pith/ZY4QV2V75JFNHFEGXAQS6DKYSV/bundle.json","state":"https://pith.science/pith/ZY4QV2V75JFNHFEGXAQS6DKYSV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZY4QV2V75JFNHFEGXAQS6DKYSV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZY4QV2V75JFNHFEGXAQS6DKYSV","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":"56f130264ca202fb2e6f01c29486862784070cc7619211203cac323f1d8b6b52","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-08-15T01:41:16Z","title_canon_sha256":"287be1fc7c00c92318419dbf0c9cb7457a8d6e33ee69327a1e83041f6e51467e"},"schema_version":"1.0","source":{"id":"1808.04938","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.04938","created_at":"2026-05-18T00:08:02Z"},{"alias_kind":"arxiv_version","alias_value":"1808.04938v1","created_at":"2026-05-18T00:08:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.04938","created_at":"2026-05-18T00:08:02Z"},{"alias_kind":"pith_short_12","alias_value":"ZY4QV2V75JFN","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZY4QV2V75JFNHFEG","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZY4QV2V7","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:1feab3eef6694616136d58efdecd456ce1cdcd5386086112f50a6b66ed97764e","target":"graph","created_at":"2026-05-18T00:08:02Z","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":"Dual-function radar communications (DFRC) systems have recently been proposed to enable the coexistence of radar and wireless communications, which in turn alleviates the increased spectrum congestion crisis. In this paper, we consider the problem of sparse transmit array design for DFRC systems by antenna selection where same or different antennas are assigned to different functions. We consider three different types of DFRC systems which implement different simultaneous beamformers associated with single and different sparse arrays with shared aperture. We utilize the array configuration as ","authors_text":"Aboulnasr Hassanien, Moeness Amin, Xiangrong Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-08-15T01:41:16Z","title":"Sparse Transmit Array Design for Dual-Function Radar Communications by Antenna Selection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.04938","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:a82959473ba4e2fa987c36bb9ec42933248da52d3dff450811be459e123ba1ec","target":"record","created_at":"2026-05-18T00:08:02Z","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":"56f130264ca202fb2e6f01c29486862784070cc7619211203cac323f1d8b6b52","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-08-15T01:41:16Z","title_canon_sha256":"287be1fc7c00c92318419dbf0c9cb7457a8d6e33ee69327a1e83041f6e51467e"},"schema_version":"1.0","source":{"id":"1808.04938","kind":"arxiv","version":1}},"canonical_sha256":"ce390aeabfea4ad39486b8212f0d58955da15f8d93416610f14801436f971fe9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ce390aeabfea4ad39486b8212f0d58955da15f8d93416610f14801436f971fe9","first_computed_at":"2026-05-18T00:08:02.140007Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:08:02.140007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zjsYMc3q0lLaIs+ijnvajNwG59RkhUYZd0NXLF72kHdjxEpwQIQ2GY2Othu2nkhVdOu3bf2d7WhdqKUV0oQxAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:08:02.140611Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.04938","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a82959473ba4e2fa987c36bb9ec42933248da52d3dff450811be459e123ba1ec","sha256:1feab3eef6694616136d58efdecd456ce1cdcd5386086112f50a6b66ed97764e"],"state_sha256":"ebcba052baed58c7212a921076bcf05288af0f2466957d4cc77cbb573dc2970b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KLo/FMizWtdG07Ebq63cTAOR6g/8pYHLdQbDaqJkTpri4z8wvgztvc8qf941zYm1t/Ui9yIWveTS6do3K2suBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T07:01:43.105309Z","bundle_sha256":"1743b1c9abf7e6a5ea64dafb13264635a6d2474d4631d6ca4343367c64c684d1"}}