POSITION ESTIMATION DEVICE, POSITION ESTIMATION METHOD AND AUTOMATIC DRIVING SYSTEM

• Main Authors: MORI KOHEI, TAKAHASHI NAOKI, TAKEHARA NARIAKI, FUJIYOSHI HIROKI
• Format: Patent
• Language: English; Japanese
• Published: 29.05.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

To obtain a position estimation device enabling highly accurate position estimation for a moving body.SOLUTION: A position estimation device 200 of the present disclosure includes a system-specific reception unit 201 that receives respective transmission signals of a plurality of transmission systems by a plurality of reception units corresponding to the respective transmission systems, a self-position calculation unit 202 that calculates first position information for a moving body for each calculation period by using the transmission signal, a moving amount calculation unit 203 that calculates a moving amount of the moving body for each calculation period, an autonomous navigation measuring unit 204 that calculates second position information for each of the plurality of communication systems on the basis of the first position information calculated by the self-position calculation unit 202 and the moving amount calculated by the moving amount calculation unit 203 for each of the plurality of communication systems, and an index value calculation unit 205 that calculates a dispersion value of a differential value between the first position information and the second position information for each of the plurality of communication systems.SELECTED DRAWING: Figure 2 【課題】移動体の高精度な位置推定を可能とする位置推定装置を得る。【解決手段】本開示の位置推定装置２００は、複数の通信方式のそれぞれの送信信号を各通信方式に対応する複数の受信部によって受信する通信方式別受信部２０１と、送信信号を用いて演算周期ごとに移動体の第一位置情報を算出する自己位置算出部２０２と、演算周期ごとに移動体の移動量を算出する移動量算出部２０３と、複数の通信方式のそれぞれについて自己位置算出部２０２によって算出された第一位置情報と移動量算出部２０３によって算出された移動量に基づき複数の通信方式のそれぞれについて第二位置情報を算出する自律航法測位部２０４と、複数の通信方式のそれぞれについて第一位置情報と第二位置情報との差分値の分散値を指標値として算出する指標値算出部２０５と、を備える。【選択図】図２