{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:YIHXJSQ7ATGOAUB6JCCBQ6PIVG","short_pith_number":"pith:YIHXJSQ7","schema_version":"1.0","canonical_sha256":"c20f74ca1f04cce0503e48841879e8a9aef9889748332984700ecb893488eb50","source":{"kind":"arxiv","id":"2607.00541","version":1},"attestation_state":"computed","paper":{"title":"Measurement-Based Characterization and Statistical Modeling of 6G Urban Low-Altitude A2G Channels across FR1 and FR3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Bin Ao, Boyang He, Hao Zheng, Jianhua Zhang, Pan Tang, Peijie Liu","submitted_at":"2026-07-01T07:33:11Z","abstract_excerpt":"Unmanned aerial vehicle (UAV) communications have been recognized as a key component of future sixth-generation (6G) space-air-ground-sea integrated networks. Accurate characterization and modeling of air-to-ground (A2G) channels are essential for the design and optimization of low-altitude communication systems. This paper presents a wideband A2G channel measurement campaign in an urban environment at 2.85 and 4.6~GHz in FR1 and 7.25~GHz in the FR3 frequency band, each with a bandwidth of 250~MHz. To enable reliable line-of-sight (LoS) and non-line-of-sight (NLoS) propagation state identifica"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2607.00541","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2026-07-01T07:33:11Z","cross_cats_sorted":[],"title_canon_sha256":"55ba1c71c86247bd511966fcc17e9c8a06964e3af33f56704997a4620b4f0930","abstract_canon_sha256":"af6af35875810d3b238be262f8c7c5442e5144aead746f4a6c8245aa3f4c85bc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-02T01:17:47.075269Z","signature_b64":"w7sgo1X/YiTxiUAXoOZHohyKPM5ar+9qoDZHOsGaW54HqkjKLKso6ZUdPInebmaoR3Cs17JvT17eaCPkl33iDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c20f74ca1f04cce0503e48841879e8a9aef9889748332984700ecb893488eb50","last_reissued_at":"2026-07-02T01:17:47.074871Z","signature_status":"signed_v1","first_computed_at":"2026-07-02T01:17:47.074871Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Measurement-Based Characterization and Statistical Modeling of 6G Urban Low-Altitude A2G Channels across FR1 and FR3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Bin Ao, Boyang He, Hao Zheng, Jianhua Zhang, Pan Tang, Peijie Liu","submitted_at":"2026-07-01T07:33:11Z","abstract_excerpt":"Unmanned aerial vehicle (UAV) communications have been recognized as a key component of future sixth-generation (6G) space-air-ground-sea integrated networks. Accurate characterization and modeling of air-to-ground (A2G) channels are essential for the design and optimization of low-altitude communication systems. This paper presents a wideband A2G channel measurement campaign in an urban environment at 2.85 and 4.6~GHz in FR1 and 7.25~GHz in the FR3 frequency band, each with a bandwidth of 250~MHz. To enable reliable line-of-sight (LoS) and non-line-of-sight (NLoS) propagation state identifica"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.00541","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/2607.00541/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2607.00541","created_at":"2026-07-02T01:17:47.074938+00:00"},{"alias_kind":"arxiv_version","alias_value":"2607.00541v1","created_at":"2026-07-02T01:17:47.074938+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.00541","created_at":"2026-07-02T01:17:47.074938+00:00"},{"alias_kind":"pith_short_12","alias_value":"YIHXJSQ7ATGO","created_at":"2026-07-02T01:17:47.074938+00:00"},{"alias_kind":"pith_short_16","alias_value":"YIHXJSQ7ATGOAUB6","created_at":"2026-07-02T01:17:47.074938+00:00"},{"alias_kind":"pith_short_8","alias_value":"YIHXJSQ7","created_at":"2026-07-02T01:17:47.074938+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/YIHXJSQ7ATGOAUB6JCCBQ6PIVG","json":"https://pith.science/pith/YIHXJSQ7ATGOAUB6JCCBQ6PIVG.json","graph_json":"https://pith.science/api/pith-number/YIHXJSQ7ATGOAUB6JCCBQ6PIVG/graph.json","events_json":"https://pith.science/api/pith-number/YIHXJSQ7ATGOAUB6JCCBQ6PIVG/events.json","paper":"https://pith.science/paper/YIHXJSQ7"},"agent_actions":{"view_html":"https://pith.science/pith/YIHXJSQ7ATGOAUB6JCCBQ6PIVG","download_json":"https://pith.science/pith/YIHXJSQ7ATGOAUB6JCCBQ6PIVG.json","view_paper":"https://pith.science/paper/YIHXJSQ7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2607.00541&json=true","fetch_graph":"https://pith.science/api/pith-number/YIHXJSQ7ATGOAUB6JCCBQ6PIVG/graph.json","fetch_events":"https://pith.science/api/pith-number/YIHXJSQ7ATGOAUB6JCCBQ6PIVG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YIHXJSQ7ATGOAUB6JCCBQ6PIVG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YIHXJSQ7ATGOAUB6JCCBQ6PIVG/action/storage_attestation","attest_author":"https://pith.science/pith/YIHXJSQ7ATGOAUB6JCCBQ6PIVG/action/author_attestation","sign_citation":"https://pith.science/pith/YIHXJSQ7ATGOAUB6JCCBQ6PIVG/action/citation_signature","submit_replication":"https://pith.science/pith/YIHXJSQ7ATGOAUB6JCCBQ6PIVG/action/replication_record"}},"created_at":"2026-07-02T01:17:47.074938+00:00","updated_at":"2026-07-02T01:17:47.074938+00:00"}