发明名称 |
Distance measuring equipment utilizing frequency modulation |
摘要 |
A radio distance measuring equipment emits a frequency modulated carrier wave signal, having a periodic frequency deviation DELTA F and a mean frequency Fo, toward an object, and receives a portion of the carrier wave signal reflected by the object. A beat signal produced by mixing the emitted and received signals is applied to a control loop which determines the distance. Operation of the equipment is periodically interrupted, under the control of a microprocessor, to effect calibration of the frequency deviation and the mean frequency.
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申请公布号 |
US4367473(A) |
申请公布日期 |
1983.01.04 |
申请号 |
US19800167565 |
申请日期 |
1980.07.11 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
MARIN, GUY F. M.;PODVIN, DOMINIQUE J.;SUSSET, JEAN-PIERRE |
分类号 |
G01S7/40;G01S13/34;H03B23/00;(IPC1-7):G01S13/26 |
主分类号 |
G01S7/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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