PROBLEM TO BE SOLVED: To provide a physical information measuring device and a physical information measuring method that can precisely extract the periodic detection object biological signal of a detection object even in an environment in which opposition property and distance, etc., of a radar to the detection object are changed.SOLUTION: A physical information measuring device 20 includes a first complex signal generation section 8 which generates a first I-channel signal and a first Q-channel signal a second complex signal generation section 10 which generates a second I-channel signal and a second Q-channel signal a frequency conversion section 16 which calculates spectrum densities of the respective channel signals respectively a peak number selection section 17 which selects a signal having the least number of projecting peaks of respective spectrum densities at the same time within the main band width of a detection object biological signal, a signal analysis section 18 which extracts physical information from the selected signal, an optimum shape selection part 22 which calculates an evaluation index for selecting a signal having the best distribution shape of spectrum densities and selects a signal having the least number of peaks and an minimum evaluation index.COPYRIGHT: (C)2013,JPO&INPIT【課題】検出対象に対するレーダーの対向性や距離等が変化する計測環境下でも、検出対象の周期的な検出対象生体信号を精度よく抽出することができる身体情報測定装置及び身体情報測定方法を提供すること。【解決手段】第一Iチャネル信号と第一Qチャネル信号とを生成する第一複素信号形成部8と、第二Iチャネル信号と第二Qチャネル信号とを生成する第二複素信号形成部10と、各チャネル信号のスペクトル密度をそれぞれ算出する周波数変換部16と、検出対象生体信号の主要帯域内で同一時刻における各スペクトル密度の突出するピークの数が最少の信号を選択するピーク数選択部17と、選択された信号から身体情報を抽出する信号解析部18と、スペクトル密度の分布形状が最良の信号を選択するための評価指数を算出してピークの数が最少かつ評価指数が最小となる信号を選択する最良形状選択部22と、を備える身体情報測定装置20とする。【選択図】図4
