{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9702971","patent":{"patent_number":"US-9702971","title":"High-availability ISAR image formation","assignee":null,"inventors":[],"filing_date":"2014-03-17T00:00:00.000Z","publication_date":"2017-07-11T00:00:00.000Z","cpc_codes":["G01S","G01S","G01S","G01S"],"num_claims":19,"abstract":"A system and method for high-availability inverse synthetic aperture radar (ISAR). In one embodiment a set of quadratic phase vectors, each corresponding to a different acceleration, is multiplied, one at a time, in a Hadamard product, with a 3-dimensional data cube, and a fast Fourier transform (FFT) is taken of the result, to form a 2-dimensional array. The two-dimensional array is made sparse by setting to zero elements that fall below a threshold based on a coherency metric, and the sparse arrays are stacked to form a sparse 3-dimensional image. Projections of the sparse 3-dimensional image are formed for presentation to an operator or an image exploitation system."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"High-availability ISAR image formation","description":"A system and method for high-availability inverse synthetic aperture radar (ISAR). In one embodiment a set of quadratic phase vectors, each corresponding to a different acceleration, is multiplied, on","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9702971","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-9702971","citation_suggestion":"Patentable. \"High-availability ISAR image formation\" (US-9702971). https://patentable.app/patents/US-9702971","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9702971","json":"https://patentable.app/api/llm-context/US-9702971","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:33:11.509Z"}