{"artifact_id":"L2-104-001","layer":"L2","parent_l1":"L1-104","title":"Ground Penetrating Radar (GPR) Mismatch-Only Spec","omega":{"dims":{"f_MHz":[25,2000],"SNR_dB":[0.0,30.0],"clutter":[0.0,0.5],"N_traces":[64,1024],"N_samples":[128,2048],"depth_range_m":[0.1,100],"antenna_coupling":[0.0,0.3],"attenuation_depth":[0.1,2.0],"soil_permittivity_variation":[0.0,0.3]},"type":"range"},"epsilon":{"type":"fn","expression":"12.0 + 0.2 * SNR_dB - 15.0 * soil_permittivity_variation - 8.0 * clutter"},"difficulty_score":0.5,"delta_tier":5,"fingerprint":"b7ef5ef657df5e045992c61a3f9b68a37bf9fa47db764724d56d65c490d6a317","status":"testnet","submitted_by":"mainnet_mirror","chain_hash":"0x0c2fc5d2d492e16b2bd9a9c00407c3e5be4d82b3a20c2cdd3eee5924192c39af","chain_tx_hash":"0x7eb67400c95f2009a4865cb17c48e442424823241ac2076cbd40fccefa7bbb0e","chain_block":41554201}