238000000926 separation method Methods 0.000 description 1.230000005540 biological transmission Effects 0.000 description 1.230000002238 attenuated Effects 0.000 claims description 2.239000000463 material Substances 0.000 claims description 3.230000000051 modifying Effects 0.000 claims abstract description 45.238000005259 measurement Methods 0.000 title description 8.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to GB1211572A priority Critical patent/GB1400012A/en Priority to UK12115/72 priority Application filed by British Steel Corp filed Critical British Steel Corp Application granted granted Critical Publication of US4044354A publication Critical patent/US4044354A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee British Steel Corp Priority date (The priority date is an assumption and is not a legal conclusion.
Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US05/338,619 Inventor David Robert Bosher John Folkard Current Assignee (The listed assignees may be inaccurate. Google Patents Distance measurement using microwavesĭownload PDF Info Publication number US4044354A US4044354A US05/338,619 US33861973A US4044354A US 4044354 A US4044354 A US 4044354A US 33861973 A US33861973 A US 33861973A US 4044354 A US4044354 A US 4044354A Authority US United States Prior art keywords signal distance phase modulated signal frequency Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4044354A - Distance measurement using microwaves US4044354A - Distance measurement using microwaves
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