Before revision:  Due to the lack of methods to aware the environment, although many promising methods were proposed to improve the mobile machines' efficiency, most construction machinery engineers must focus on the most hazardous situation and have to give the highest priority to safety when designing. Consequently, the industry does not fully benefited from the existing research. Also, due to the dynamically changing of the construction site and the consequent absence of a high definition map, the localization of mobile machines is still a challengingtask.
After revision:  Due to the dynamically changing of the construction site and the consequent absence of a high definition map, the localization of mobile machines is still a challengingtask.