本文简要分析了IPC国际专利分类中G01S19/38及其下小组涉及的卫星导航方案的交叉领域,针对导航领域在IPC分类体系的专利分布情况,对电子地图、路径规划、交通管理等常见主题进行了交叉检索策略的分析,并结合实际案例论证了在该领域利用分类号进行交叉检索的实用性及高效性。 This paper briefly analyzes the intersection of G01S19 / 38 and satellite navigation programs involved in the IPC international patent classification. In view of the patent distribution in the IPC classification system in the field of navigation, common topics such as electronic maps, path planning and traffic management are conducted The analysis of cross-search strategy, combined with the actual case demonstrates the practicality and efficiency of cross-search using the classification number in this field.