Title:
情報信号生成方法
Document Type and Number:
Japanese Patent JP5885758
Kind Code:
B2
Abstract:
There arises an issue in which it is difficult to achieve an increase in resolution and a reduction of noise components for a signal at the same time. A signal generation method for generating an information signal F(b) by performing a Fourier transform on a signal f(a) includes the following steps: detecting the maximum peak intensity of the information signal F(b); calculating an amplitude, a phase, and a frequency of the signal f(a) corresponding to the maximum peak intensity; generating a signal by causing the signal f(a) corresponding to the maximum peak intensity to extend along an 'a' axis on the basis of the information about the amplitude, the phase, and the frequency; generating an extrapolation signal by extracting a signal in a region smaller than a1 and a signal in a region larger than a2 from the extending signal, where a1 < a2; generating a composite signal by combining the extrapolation signal with the signal f(a) in a range from a1 to a2; and further performing a Fourier transform on the composite signal.
Inventors:
Takeshi Ota
Application Number:
JP2013551079A
Publication Date:
March 15, 2016
Filing Date:
December 27, 2011
Export Citation:
Assignee:
Canon Inc
International Classes:
G01N21/17; G01S17/89
Domestic Patent References:
| JP2008298767A | ||||
| JP2009536740A | ||||
| JP2010223670A | ||||
| JP63302307A | ||||
| JP10510355A | ||||
| JP2001008919A |
Foreign References:
| EP1870029A1 |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa