{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9618617","patent":{"patent_number":"US-9618617","title":"Level measurement using correlation between a pair of secondary reference signals","assignee":null,"inventors":[],"filing_date":"2015-03-20T00:00:00.000Z","publication_date":"2017-04-11T00:00:00.000Z","cpc_codes":["G01S","G01S","G01S","G01S","G01S","G01S","G01S"],"num_claims":16,"abstract":"A method of measuring a level of a material in a tank. A first secondary reference (FSR) signal is generated when a reference pulse is transmitted into the tank and a second secondary reference signal (SSR) signal is generated when an echo signal responsive to the reference pulse is received. A plurality of FSR signals and a plurality of SSR signals are stored. The plurality of FSR signals and plurality of SSR signals are transferred to a correlator block which calculates a plurality of correlation function values (CFVs) that have magnitudes reflecting a degree of matching between pairs of the SSR signals with their associated FSR signals. Using a maximum CFV result a time interval (Tm) is calculated between the FSR signal and SSR signal associated with the maximum CFV result, and the level of material in the tank is determined from Tm."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Level measurement using correlation between a pair of secondary reference signals","description":"A method of measuring a level of a material in a tank. A first secondary reference (FSR) signal is generated when a reference pulse is transmitted into the tank and a second secondary reference signal","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9618617","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9618617","citation_suggestion":"Patentable. \"Level measurement using correlation between a pair of secondary reference signals\" (US-9618617). https://patentable.app/patents/US-9618617","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9618617","json":"https://patentable.app/api/llm-context/US-9618617","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:37:46.002Z"}