SDF-Loc:SignedDistanceFieldbased2DRelocalizationandMapUpdateinDynamicEnvironmentsSDF-Loc：动态环境中基于符号距离场的二维重定位和地图更新作者来自中国杭州阿里巴巴达摩院人工智能实验室。{ximing.zmm,yimingchen,na.lmy}@alibaba-inc.com。2019American