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发明名称
Echo recognition system
摘要
An echo-type range finding system is rendered unresponsive to spurious signals and electronic noise, and has its object distance determining accuracy improved by rejecting signals that do not persist for a predetermined period of time.
申请公布号
US4380807(A)
申请公布日期
1983.04.19
申请号
US19810266901
申请日期
1981.05.26
申请人
POLAROID CORPORATION
发明人
REYNARD, JOHN M.
分类号
G01S7/527;(IPC1-7):G01S7/66;G01S15/04
主分类号
G01S7/527
代理机构
代理人
主权项
地址
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