{"cited_by_count":180477,"description":"This cluster of papers focuses on radar wave propagation, refractivity estimation, and atmospheric ducting. It includes research on parabolic wave equations, evaporation ducts, tropospheric refractivity, and the impact of meteorological parameters on radio wave propagation. The studies cover a wide range of techniques and models for estimating refractivity from radar sea clutter and ground-based GPS, as well as the development of tools for propagation prediction over variable terrain.","display_name":"Radio Wave Propagation Studies","domain_id":"3","external_ids":{"openalex":"https://openalex.org/T13121","wikipedia":"https://en.wikipedia.org/wiki/Radio_propagation"},"field_id":"22","id":"T13121","keywords":[{"display_name":"radio wave propagation","id":"radio-wave-propagation","score":0.2667,"url":"https://openalex.org/keywords/radio-wave-propagation"},{"display_name":"rain attenuation","id":"rain-attenuation","score":0.3827,"url":"https://openalex.org/keywords/rain-attenuation"},{"display_name":"millimeter-wave propagation","id":"millimeter-wave-propagation","score":0.2763,"url":"https://openalex.org/keywords/millimeter-wave-propagation"},{"display_name":"microwave propagation","id":"microwave-propagation","score":0.3697,"url":"https://openalex.org/keywords/microwave-propagation"},{"display_name":"tropospheric propagation","id":"tropospheric-propagation","score":0.7111,"url":"https://openalex.org/keywords/tropospheric-propagation"},{"display_name":"atmospheric refractivity","id":"atmospheric-refractivity","score":0.3226,"url":"https://openalex.org/keywords/atmospheric-refractivity"},{"display_name":"ground wave propagation","id":"ground-wave-propagation","score":0.594,"url":"https://openalex.org/keywords/ground-wave-propagation"},{"display_name":"evaporation duct","id":"evaporation-duct","score":0.8687,"url":"https://openalex.org/keywords/evaporation-duct"},{"display_name":"HF radio propagation","id":"hf-propagation","score":0.2671,"url":"https://openalex.org/keywords/hf-propagation"},{"display_name":"refractivity","id":"refractivity","score":0.2047,"url":"https://openalex.org/keywords/refractivity"},{"display_name":"radar propagation","id":"radar-wave-propagation","score":0.5181,"url":"https://openalex.org/keywords/radar-wave-propagation"},{"display_name":"radio wave attenuation","id":"radio-wave-attenuation","score":0.4212,"url":"https://openalex.org/keywords/radio-wave-attenuation"},{"display_name":"refractivity profiles","id":"refractivity-profiles","score":0.4552,"url":"https://openalex.org/keywords/refractivity-profiles"},{"display_name":"propagation prediction","id":"propagation-prediction","score":0.4779,"url":"https://openalex.org/keywords/propagation-prediction"},{"display_name":"ionospheric reflection","id":"ionospheric-reflection","score":0.2333,"url":"https://openalex.org/keywords/ionospheric-reflection"},{"display_name":"VLF propagation","id":"vlf-propagation","score":0.2159,"url":"https://openalex.org/keywords/vlf-propagation"},{"display_name":"radio wave scattering","id":"radio-wave-scattering","score":0.2011,"url":"https://openalex.org/keywords/radio-wave-scattering"},{"display_name":"VHF propagation","id":"vhf-propagation","score":0.546,"url":"https://openalex.org/keywords/vhf-propagation"},{"display_name":"long-distance propagation","id":"long-range-propagation","score":0.272,"url":"https://openalex.org/keywords/long-range-propagation"},{"display_name":"Earth-ionosphere waveguide","id":"earth-ionosphere-waveguide","score":0.2434,"url":"https://openalex.org/keywords/earth-ionosphere-waveguide"},{"display_name":"tropospheric scatter","id":"tropospheric-scatter","score":0.7455,"url":"https://openalex.org/keywords/tropospheric-scatter"},{"display_name":"anomalous propagation","id":"anomalous-propagation","score":0.5254,"url":"https://openalex.org/keywords/anomalous-propagation"},{"display_name":"tropospheric scintillation","id":"tropospheric-scintillation","score":0.7275,"url":"https://openalex.org/keywords/tropospheric-scintillation"},{"display_name":"parabolic equation method","id":"parabolic-equation-method","score":0.245,"url":"https://openalex.org/keywords/parabolic-equation-method"},{"display_name":"atmospheric ducting","id":"atmospheric-ducting","score":0.6929,"url":"https://openalex.org/keywords/atmospheric-ducting"}],"legacy_keywords":["Radar Propagation","Refractivity Estimation","Parabolic Wave Equation","Evaporation Duct","Tropospheric Refractivity","Atmospheric Ducting","Radio Wave","Ground-Based GPS","Electromagnetic Scatterings","Meteorological Parameters"],"openalex_id":"https://openalex.org/T13121","source_created_date":"2024-01-23T15:27:17","source_updated_date":"2026-10-17T03:02:00","subfield_id":"2202","url":"/topics/T13121","works_api_url":"https://api.openalex.org/works?filter=topics.id:T13121","works_count":34655,"label":"Radio Wave Propagation Studies","provider":"openalex","revision":"887934817722d43b","taxonomy_revision":"f050b5d4780b1289","title":"Radio Wave Propagation Studies","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"38351550900748921","address_version":"morton4x16-v1","coordinates":[3,22,2202,13121],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}