{"id":"https://openalex.org/keywords/ambiguity-function","display_name":"ambiguity function","description":"A mathematical function describing a signal\u2019s response across time delay and frequency shift, used in radar and signal processing.","display_name_alternatives":["Woodward ambiguity function","ambiguity functions"],"ids":{"openalex":"https://openalex.org/keywords/ambiguity-function","wikidata":"https://www.wikidata.org/wiki/Q3206297"},"primary_topic":{"id":"https://openalex.org/T10891","display_name":"Radar Systems and Signal Processing","score":0.5597,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10891","display_name":"Radar Systems and Signal Processing","score":0.5597,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11210","display_name":"Mathematical Analysis and Transform Methods","score":0.0913,"subfield":{"id":"https://openalex.org/subfields/2604","display_name":"Applied Mathematics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"works_count":2990,"cited_by_count":40993,"works_api_url":"https://api.openalex.org/works?filter=keywords.id:keywords/ambiguity-function","updated_date":"2026-10-24T04:06:44","created_date":"2022-04-12T19:38:12"}