| 摘要 |
A detector for detecting a signal to be measured, which is made to discrete with a predetermined discrete frequency, is provided, wherein the detector includes an analysis signal transformer for eliminating aliasing components of the signal to be measured, which are generated due to the discreteness, by transforming the signal to be measured into an analysis signal of which the discrete frequency is lower than that of the signal to be measured, and a base band signal generating unit for frequency-shifting the analysis signal and generating a complex base band signal of the signal to be measured.
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