POSITION ESTIMATION DEVICE

• Main Authors: MORI KOHEI, MAEMURA RYOSUKE, HIKASA TAKESHI, TAKAHASHI NAOKI, TAKEHARA NARIAKI
• Format: Patent
• Language: English; Japanese
• Published: 24.05.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GYROSCOPIC INSTRUMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURVEYING; TESTING

To provide an own vehicle position estimation device that has improved stability by using a plurality of positioning results.SOLUTION: An own vehicle position estimation device includes: an absolute position detection unit that has absolute position detection devices and detects absolute positions and outputs detection information of multiple absolute position detection devices; a vehicle behavior measurement unit that outputs a state of an own vehicle as a vehicle behavior signal; a relative position calculation unit that calculates a relative position of the own vehicle from the vehicle behavior signal; a positioning accuracy determination unit that determines accuracy of multiple absolute positions based on absolute position detection information and relative position calculation information, and outputs the determination result as positioning accuracy determination information; and a composite positioning calculation unit that calculates a composite positioning position by combining a highly accurate absolute position in absolute position information with the relative position as a composite positioning signal from the absolute position information signal, relative position calculation information, and positioning accuracy determination information, in which the absolute position detection information is re-calculated when there is less accurate information in the multiple absolute position information.SELECTED DRAWING: Figure 1 【課題】複数の測位結果を用いてより安定性を高めた自車の位置推定装置を提供する。【解決手段】自車の位置推定装置において、絶対位置を検出する絶対位置検出装置を有し、複数の絶対位置検出装置の検出情報を出力する絶対位置検出部と、自車の状態を車両挙動信号として出力する車両挙動計測部と、車両挙動信号より自車の相対位置を算出する相対位置演算部と、絶対位置検出情報と相対位置算出情報より複数の絶対位置の精度を判定し、判定結果を測位精度判定情報として出力する測位精度判定部と、絶対位置情報信号と相対位置演算情報と測位精度判定情報より、絶対位置情報のうち精度の良い絶対位置と、相対位置を複合した複合測位位置を複合測位信号として演算する複合測位演算部を備え、絶対位置検出情報は、複数の絶対位置情報に精度が劣る情報がある場合、再演算される。【選択図】図１