PROBLEM TO BE SOLVED: To provide a data analysis device that accurately estimates a vein wave signal from a signal of a microwave reflected in a vein of a subject.SOLUTION: A data analysis device includes a waveform processing part for creating a vein wave signal of a vein from a signal of a microwave reflected in the vein of a subject. The waveform processing part includes a reconstruction part 52 for reconstructing an artery wave signal Sartery of the subject by subjecting the signal of the microwave reflected in the vein of the subject to self-correlation processing, and an estimation part 53 for estimating a vein wave signal Svein of the subject based on the signal of the microwave and the artery wave signal Sartery.SELECTED DRAWING: Figure 4【課題】被験体の静脈において反射したマイクロ波の信号から静脈波信号を正確に推定するデータ解析装置を提供する。【解決手段】データ解析装置は、被験体の静脈において反射したマイクロ波の信号から、当該静脈の静脈波信号を生成する波形処理部を含むデータ解析装置であって、波形処理部が、被験体の静脈において反射したマイクロ波の信号に自己相関処理を施すことにより、被験体の動脈波信号Sarteryを再構成する再構成部52と、マイクロ波の信号と動脈波信号Sarteryとに基づいて、被験体の静脈波信号Sveinを推定する推定部53とを含む。【選択図】図4