{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8466836","patent":{"patent_number":"US-8466836","title":"Fast fourier transform with down sampling based navigational satellite signal tracking","assignee":null,"inventors":[],"filing_date":"2005-08-31T00:00:00.000Z","publication_date":"2013-06-18T00:00:00.000Z","cpc_codes":["G01S","G01S","G01S","H04B","G01S"],"num_claims":26,"abstract":"A method and device to track navigational satellite signals, are claimed. In this invention, a combination of down-sampling and frequency domain transformation are used to track the navigational satellite signals under dynamic environment. A Fast Fourier Transform (FFT) with long coherent integration has been employed to determine the varying frequency components with high resolution. By representing a number of correlation values with their average value, it is possible to represent a long sequence of input values by a smaller number of values and a relatively short length FFT can reveal the low frequency components that are present in the signal during tracking operation. A large reduction in the computational load may be achieved using this down-sampling method without compromising on the frequency resolution."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Fast fourier transform with down sampling based navigational satellite signal tracking","description":"A method and device to track navigational satellite signals, are claimed. In this invention, a combination of down-sampling and frequency domain transformation are used to track the navigational satel","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8466836","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-8466836","citation_suggestion":"Patentable. \"Fast fourier transform with down sampling based navigational satellite signal tracking\" (US-8466836). https://patentable.app/patents/US-8466836","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8466836","json":"https://patentable.app/api/llm-context/US-8466836","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T12:44:19.401Z"}