发明名称 |
Radar signal processing apparatus, and method of measuring distance and speed |
摘要 |
A radar signal processing apparatus has a range gate for extracting range gate data sequences from a memory, a first frequency extraction section which extracts a beat frequency corresponding to a target by performing frequency analysis by FFT at a low computation load and with low frequency measurement accuracy on all range gate data sequences extracted by the range gate, a second frequency extraction section which extracts a beat frequency corresponding to the target by performing frequency analysis by FFT at a high computation load and with high frequency measurement accuracy only on the range gate data sequence from which a beat frequency has been extracted by the first frequency extraction section, and a distance and speed derivation section which obtains the relative distance and the relative speed of the target on the basis of the beat frequency extracted by the second frequency extraction section.
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申请公布号 |
US6611225(B2) |
申请公布日期 |
2003.08.26 |
申请号 |
US20020137280 |
申请日期 |
2002.05.03 |
申请人 |
MITSUBISH DENKI KABUSHIKI KAISHA |
发明人 |
MITSUMOTO MASASHI;FUJISAKA TAKAHIKO;KAI KOICHI |
分类号 |
G01S7/288;G01S7/35;G01S13/34;G01S13/93;(IPC1-7):G01S13/93 |
主分类号 |
G01S7/288 |
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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