PROBLEM TO BE SOLVED: To provide an estimation device and an estimation method that can estimate the direction or the position of a moving body with higher accuracy.SOLUTION: An estimation device comprises: a transmission antenna unit 11； a transmission signal generating unit 13 that generates a transmission signal； a transmitting unit 12 that outputs the transmission signal to the transmission antenna unit 11； a receiving antenna unit 21； a receiving unit 22 that observes receiving signals including a reflection signal that is the transmitted transmission signal reflected and scattered by a moving body； a complex transfer function calculation unit 23 that calculates a plurality of complex transfer functions representing the propagation characteristics between transmission antenna elements and receiving antenna elements from the plurality of observed receiving signals； a moving body correlation matrix calculation unit 24 that calculates a moving body correlation matrix in the complex transfer functions； and an estimation processing unit 26 that estimates a direction or a position where the moving body is present by using a calculated moving body correlation matrix.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】より高精度に動体の方向または位置を推定できる推定装置および推定方法を提供する。【解決手段】推定装置は、送信アンテナ部１１と、送信信号を生成する送信信号生成部１３と、送信信号を送信アンテナ部１１に出力する送信部１２と、受信アンテナ部２１と、送信された送信信号が動体によって反射、散乱された反射信号を含む受信信号を観測する受信部２２と、観測された複数の受信信号から、各送信アンテナ素子と各受信アンテナ素子との間の伝搬特性を表す複素伝達関数を複数算出する複素伝達関数算出部２３と、複素伝達関数中の動体相関行列を算出する動体相関行列算出部２４と、算出された動体相関行列を用いて動体の存在する方向または位置を推定する推定処理部２６と、を備える。【選択図】図１
