发明名称 |
Radio wave angle of incidence measurement apparatus |
摘要 |
This invention relates to a radio wave angle of incidence measurement apparatus which is applicable to radar and other detection systems, and which utilizes an antenna array with radiator elements distributed at a spacing larger than one half of the propagation wavelength. A radio signal is received by an antenna array that exhibit at least two different values of d/ lambda (where d is the inter-element spacing of the radiator elements, lambda the propagation wavelength), and the resultant inter-element phase differences, of which there are at least two sets, are digitally measured. A phase difference converter circuit receives the digital signals representing the inter-element phase differences and processes them and generates an output signal that varies monotonically as the incident angle of the radio signal incident on the antenna array varies.
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申请公布号 |
US4449192(A) |
申请公布日期 |
1984.05.15 |
申请号 |
US19810329030 |
申请日期 |
1981.12.09 |
申请人 |
WATANABE, MASARU;YAMAUCHI, NOBUHARU;HASHIMOTO, NAOKI;TAMAMA, TETSUO |
发明人 |
WATANABE, MASARU;YAMAUCHI, NOBUHARU;HASHIMOTO, NAOKI;TAMAMA, TETSUO |
分类号 |
G01S13/42;G01S3/48;G01S7/295;(IPC1-7):G06F15/20;G01S3/46 |
主分类号 |
G01S13/42 |
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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