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Apparatus and method for locating cellular telephones 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01S-001/24
  • H04M-011/00
출원번호 US-0272725 (1994-07-08)
발명자 / 주소
  • Herrick David L. (Mont Vernon NH)
출원인 / 주소
  • Lockheed Sanders, Inc. (Nashua NH 02)
인용정보 피인용 횟수 : 293  인용 특허 : 0

초록

A method for determining the time difference of arrival, tdoa, of signals from a cellular telephone, includes determining tdoas for a plurality of channels, averaging the tdoas from the channels, subtracting the average tdoa from the individual channel tdoas to determine residual channel tdoas and d

대표청구항

A method for determining the time difference of arrival, tdoa, of signals from a cellular telephone, cell phone, at a pair of base stations, comprising the steps of: substantially simultaneously sampling transmission signals from the cell phone at the pair of base stations in a plurality of cell pho

이 특허를 인용한 특허 (293)

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