PROBLEM TO BE SOLVED: To make it possible to perform accurate positioning on a travel vehicle body.SOLUTION: A work machine includes: a travel vehicle body； a first positioning device including a first antenna for receiving a first satellite signal transmitted from a GNSS satellite, and a first position calculation unit for performing positioning on the basis of the first satellite signal received by the first antenna； and a second positioning device including a second antenna for receiving a second satellite signal transmitted from a QZSS satellite, a signal processing unit for generating correction information on the basis of the second satellite signal received by the second antenna, a correction information output unit for transmitting the correction information to the first positioning device, and a second positioning calculation unit for calculating a second position on the basis of the second satellite signal received by the second antenna and the correction information. The first positioning device and the second positioning device are provided in the travel vehicle body, and the first position calculation unit performs positioning on the basis of the correction information transmitted from the correction information output unit and the first satellite signal.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】走行車体に対して精度のよい測位を行うことができるようにする。【解決手段】作業機は、走行車体と、ＧＮＳＳ衛星から送信された第１衛星信号を受信する第１アンテナと、第１アンテナで受信した第１衛星信号に基づいて測位を行う第１位置演算部とを有する第１測位装置と、ＱＺＳＳ衛星から送信された第２衛星信号を受信する第２アンテナと、第２アンテナで受信した第２衛星信号に基づいて補正情報を生成する信号処理部と、補正情報を第１測位装置に送信する補正情報出力部と、第２アンテナで受信した第２衛星信号及び補正情報に基づいて第２位置を演算する第２位置演算部とを備えた第２測位装置と、を備え、第１測位装置及び第２測位装置は、走行車体に設けられ、第１位置演算部は、補正情報出力部から送信された補正情報及び第１衛星信号に基づいて測位を行う。【選択図】図１
