{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:VYER3SZQ6UFXMUL3DEVPPZKEOV","short_pith_number":"pith:VYER3SZQ","canonical_record":{"source":{"id":"1808.09527","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-08-10T19:34:50Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"7d8fec3fe89ffebf7b097c125dd3865ac535ba51b47e36ed3badeb0d2a7ec0d0","abstract_canon_sha256":"9b986d796ee14fa27dd63d0e47871e9bc0ded25ac733b27782aa602f7b10e6c0"},"schema_version":"1.0"},"canonical_sha256":"ae091dcb30f50b76517b192af7e5447562080c461fe1c1ebf4b969d6e7da8c44","source":{"kind":"arxiv","id":"1808.09527","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.09527","created_at":"2026-05-18T00:06:55Z"},{"alias_kind":"arxiv_version","alias_value":"1808.09527v1","created_at":"2026-05-18T00:06:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.09527","created_at":"2026-05-18T00:06:55Z"},{"alias_kind":"pith_short_12","alias_value":"VYER3SZQ6UFX","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VYER3SZQ6UFXMUL3","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VYER3SZQ","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:VYER3SZQ6UFXMUL3DEVPPZKEOV","target":"record","payload":{"canonical_record":{"source":{"id":"1808.09527","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-08-10T19:34:50Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"7d8fec3fe89ffebf7b097c125dd3865ac535ba51b47e36ed3badeb0d2a7ec0d0","abstract_canon_sha256":"9b986d796ee14fa27dd63d0e47871e9bc0ded25ac733b27782aa602f7b10e6c0"},"schema_version":"1.0"},"canonical_sha256":"ae091dcb30f50b76517b192af7e5447562080c461fe1c1ebf4b969d6e7da8c44","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:06:55.296554Z","signature_b64":"lu8aU9m7nhVe9HvSTL8hXWXkNXYvvJGBaBguQ3LPZtRqQteNEzMNUP4p4XDd1Sflydmr3mlXmhGSgGGp25u/AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae091dcb30f50b76517b192af7e5447562080c461fe1c1ebf4b969d6e7da8c44","last_reissued_at":"2026-05-18T00:06:55.295897Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:06:55.295897Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.09527","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":"2026-05-18T00:06:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dtJ5t3KMHGBM7fizkSQzhkGoa27Yu08oHZsIzpUF4RghJ3oGfO0l0pKAQXaJJ8qpjP5k0b4B3XumRKpDmdnGBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T05:05:21.683039Z"},"content_sha256":"d0318d5204d0d09e8e621ac6e4280881da3139bed1b8194409efe7cc8710badb","schema_version":"1.0","event_id":"sha256:d0318d5204d0d09e8e621ac6e4280881da3139bed1b8194409efe7cc8710badb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:VYER3SZQ6UFXMUL3DEVPPZKEOV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Performance Tradeoff in a Unified System of Communications and Passive Radar: A Secrecy Capacity Approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Batu K. Chalise, Moeness G. Amin","submitted_at":"2018-08-10T19:34:50Z","abstract_excerpt":"In a unified system of passive radar and communication systems of joint transmitter platform, information intended for a communication receiver may be eavesdropped by a passive radar receiver (RR), thereby undermining the security of communications system. To minimize this information security risk, in this paper, we propose a unified passive radar and communications system wherein the signal-to-interference and noise ratio (SINR) at the RR is maximized while ensuring that the information secrecy rate is above a certain threshold value. We consider both scenarios wherein transmissions of the r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09527","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":"2026-05-18T00:06:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J/Srbs/0w6JzXjNGOaM5EzASGgjzT3rBlu1zY7qPzCy99E/rqHumUChQR3sCgEc2G+j1J/DK2m+gKvq1f3/5Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T05:05:21.683755Z"},"content_sha256":"c5911e72621f3b34ef93e9c32d218e91280eaa7edb52634cb071ffc68c4c2ad6","schema_version":"1.0","event_id":"sha256:c5911e72621f3b34ef93e9c32d218e91280eaa7edb52634cb071ffc68c4c2ad6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VYER3SZQ6UFXMUL3DEVPPZKEOV/bundle.json","state_url":"https://pith.science/pith/VYER3SZQ6UFXMUL3DEVPPZKEOV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VYER3SZQ6UFXMUL3DEVPPZKEOV/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":"2026-06-11T05:05:21Z","links":{"resolver":"https://pith.science/pith/VYER3SZQ6UFXMUL3DEVPPZKEOV","bundle":"https://pith.science/pith/VYER3SZQ6UFXMUL3DEVPPZKEOV/bundle.json","state":"https://pith.science/pith/VYER3SZQ6UFXMUL3DEVPPZKEOV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VYER3SZQ6UFXMUL3DEVPPZKEOV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VYER3SZQ6UFXMUL3DEVPPZKEOV","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":"9b986d796ee14fa27dd63d0e47871e9bc0ded25ac733b27782aa602f7b10e6c0","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-08-10T19:34:50Z","title_canon_sha256":"7d8fec3fe89ffebf7b097c125dd3865ac535ba51b47e36ed3badeb0d2a7ec0d0"},"schema_version":"1.0","source":{"id":"1808.09527","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.09527","created_at":"2026-05-18T00:06:55Z"},{"alias_kind":"arxiv_version","alias_value":"1808.09527v1","created_at":"2026-05-18T00:06:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.09527","created_at":"2026-05-18T00:06:55Z"},{"alias_kind":"pith_short_12","alias_value":"VYER3SZQ6UFX","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VYER3SZQ6UFXMUL3","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VYER3SZQ","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:c5911e72621f3b34ef93e9c32d218e91280eaa7edb52634cb071ffc68c4c2ad6","target":"graph","created_at":"2026-05-18T00:06:55Z","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 a unified system of passive radar and communication systems of joint transmitter platform, information intended for a communication receiver may be eavesdropped by a passive radar receiver (RR), thereby undermining the security of communications system. To minimize this information security risk, in this paper, we propose a unified passive radar and communications system wherein the signal-to-interference and noise ratio (SINR) at the RR is maximized while ensuring that the information secrecy rate is above a certain threshold value. We consider both scenarios wherein transmissions of the r","authors_text":"Batu K. Chalise, Moeness G. Amin","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-08-10T19:34:50Z","title":"Performance Tradeoff in a Unified System of Communications and Passive Radar: A Secrecy Capacity Approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09527","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:d0318d5204d0d09e8e621ac6e4280881da3139bed1b8194409efe7cc8710badb","target":"record","created_at":"2026-05-18T00:06:55Z","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":"9b986d796ee14fa27dd63d0e47871e9bc0ded25ac733b27782aa602f7b10e6c0","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-08-10T19:34:50Z","title_canon_sha256":"7d8fec3fe89ffebf7b097c125dd3865ac535ba51b47e36ed3badeb0d2a7ec0d0"},"schema_version":"1.0","source":{"id":"1808.09527","kind":"arxiv","version":1}},"canonical_sha256":"ae091dcb30f50b76517b192af7e5447562080c461fe1c1ebf4b969d6e7da8c44","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae091dcb30f50b76517b192af7e5447562080c461fe1c1ebf4b969d6e7da8c44","first_computed_at":"2026-05-18T00:06:55.295897Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:55.295897Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lu8aU9m7nhVe9HvSTL8hXWXkNXYvvJGBaBguQ3LPZtRqQteNEzMNUP4p4XDd1Sflydmr3mlXmhGSgGGp25u/AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:55.296554Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.09527","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d0318d5204d0d09e8e621ac6e4280881da3139bed1b8194409efe7cc8710badb","sha256:c5911e72621f3b34ef93e9c32d218e91280eaa7edb52634cb071ffc68c4c2ad6"],"state_sha256":"68cd3017f0793582f6fdf778bb7271c57e202aa6eec92b6e6d5eef2acbaf311d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fxQSZ/m40oWF/emR39c5dhcr6flv/K13MhQOQ5+L3CCxztxlw70bkfu7DXCt77jDLbs8qZyipX1hhbt2FjLcCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T05:05:21.687600Z","bundle_sha256":"27b8927eb642d695097db410b9028729eb55a6a0701a25ba03807755cca0c372"}}