发明名称 |
Radioaltimeter type of detector and a proximity fuse equipped with such a detector |
摘要 |
The invention relates to a radioaltimeter type detector comprising an oscillator-transmitter (10), a modulator (20) suitable for frequency modulating the oscillator-transmitter according to a given characteristic, a mixer receiving the signal from the oscillator-transmitter and a corresponding echo signal reflected by a target, and a discriminator circuit (50, 60) connected to the output from the mixer. According to the invention, the modulator (20) includes a digital memory (21) containing a series of values defining the frequency modulation characteristic of the oscillator-transmitter (10).
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申请公布号 |
US4973967(A) |
申请公布日期 |
1990.11.27 |
申请号 |
US19880276250 |
申请日期 |
1988.11.23 |
申请人 |
ETIENNE LACROIX - TOUS ARTIFICES S.A. |
发明人 |
DAVID, JACQUES;CRAMPAGNE, RAYMOND;BARICOS, JEAN |
分类号 |
F42C13/04;G01S13/34;G01S13/88;H03B5/18 |
主分类号 |
F42C13/04 |
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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