{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8538682","patent":{"patent_number":"US-8538682","title":"Systems and methods for satellite navigation using locally generated ephemeris data","assignee":null,"inventors":[],"filing_date":"2009-04-24T00:00:00.000Z","publication_date":"2013-09-17T00:00:00.000Z","cpc_codes":["G01S"],"num_claims":28,"abstract":"This disclosure is directed to methods and systems for locally generating calculated ephemerides that may be used by a navigation device to calculate position information before a broadcast ephemeris from a given navigation satellite has been completely received or when the broadcast ephemeris from the satellite is not available. Generally, the invention includes the steps of calibrating the initial satellite velocity from the last available broadcast ephemeris, correcting the clock for a prediction time period, predicting the satellite position during the time period and formatting the predictions into a calculated ephemeris to be used by the receiver to determine position information."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Systems and methods for satellite navigation using locally generated ephemeris data","description":"This disclosure is directed to methods and systems for locally generating calculated ephemerides that may be used by a navigation device to calculate position information before a broadcast ephemeris ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8538682","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-8538682","citation_suggestion":"Patentable. \"Systems and methods for satellite navigation using locally generated ephemeris data\" (US-8538682). https://patentable.app/patents/US-8538682","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8538682","json":"https://patentable.app/api/llm-context/US-8538682","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T22:12:18.283Z"}