{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9645251","patent":{"patent_number":"US-9645251","title":"Estimation of roll and roll rate of a spinning body based on a signal received from a remote transmitter","assignee":null,"inventors":[],"filing_date":"2014-03-26T00:00:00.000Z","publication_date":"2017-05-09T00:00:00.000Z","cpc_codes":["G01S","G01S","G01S"],"num_claims":19,"abstract":"A receiver determines a roll rate of a spinning projectile that receives a signal from a satellite or terrestrial transmitter at a directional antenna fixed to the projectile. The receiver tracks a code phase and a rate of change thereof of the received signal relative to a local model signal corresponding to the transmitter. A roll correlator of the receiver correlates the received signal with the model signal based on (i) the tracked code phase and rate, and (ii) a roll-correlator integration time assumed to produce a predetermined number N of correlation samples per revolution of the antenna, to produce sequential correlation samples for each of successive revolutions of the antenna. The receiver determines a time difference between successive periods of observed signal reception based on the correlation samples, and determines a roll rate based on the time difference."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Estimation of roll and roll rate of a spinning body based on a signal received from a remote transmitter","description":"A receiver determines a roll rate of a spinning projectile that receives a signal from a satellite or terrestrial transmitter at a directional antenna fixed to the projectile. The receiver tracks a co","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9645251","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-9645251","citation_suggestion":"Patentable. \"Estimation of roll and roll rate of a spinning body based on a signal received from a remote transmitter\" (US-9645251). https://patentable.app/patents/US-9645251","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9645251","json":"https://patentable.app/api/llm-context/US-9645251","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T17:27:28.571Z"}