发明名称 |
Multi-frequency radar for underground investigation. |
摘要 |
<p>A radar apparatus for detecting a distance from the radar antenna (13) to a buried object (1) in the underground.</p><p>The radar apparatus calculates the distance based on Maxwell's equation relating to speed of propagation of the electromagnetic wave using received signals of two or more different frequencies in the receiver (5) which are reflected signals from the buried object (1) of electromagnetic waves emitted from the antenna (13).</p> |
申请公布号 |
EP0147829(A2) |
申请公布日期 |
1985.07.10 |
申请号 |
EP19840116096 |
申请日期 |
1984.12.21 |
申请人 |
HITACHI, LTD. |
发明人 |
HIRAMOTO, KAZUO |
分类号 |
G01S7/42;G01S13/02;G01S13/06;G01S13/14;G01S13/24;G01S13/50;G01S13/88;G01V3/12;(IPC1-7):G01S13/14 |
主分类号 |
G01S7/42 |
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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