发明名称 |
VELOCITY MEASURING METHOD AND VELOCITY MEASURING DEVICE USING THE SAME |
摘要 |
The present invention is to provide a velocity measuring method and a velocity measuring device for carrying out the method. The velocity measuring method includes: a step (S4) for expanding N time series signals by using 0-th to (N-1)-th degree discrete Legendre function as a base; a step (S5) for calculating 2n-th degree complex expansion coefficient by multiplying a linear combination of a (2n-1)-th degree expansion coefficient and a (2n+1)-th degree expansion coefficient by an imaginary unit and then linearly combining the result and a 2n-th degree expansion coefficient, and calculating a (2n+1)-th degree complex expansion coefficient by multiplying the (2n+1)-th degree expansion coefficient by an imaginary unit and then linearly combining the result, the 2n-th degree expansion coefficient and a (2n+2)-th degree expansion coefficient; a degree decision step (S4) for determining the degree m of a coefficient having the maximum absolute value among the complex expansion coefficients; and a step (S8) for calculating a signed velocity signal concerning a moving reflection object from a ratio of square sums of the expansion coefficients or complex expansion coefficients corresponding to the degree m.
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申请公布号 |
US2009177091(A1) |
申请公布日期 |
2009.07.09 |
申请号 |
US20060915625 |
申请日期 |
2006.01.06 |
申请人 |
UMEMURA SHINICHIRO;AZUMA TAKASHI;HAYASHI TETSUYA;MURAYAMA NAOYUKI |
发明人 |
UMEMURA SHINICHIRO;AZUMA TAKASHI;HAYASHI TETSUYA;MURAYAMA NAOYUKI |
分类号 |
A61B8/06 |
主分类号 |
A61B8/06 |
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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