Abstract: With the increase of large and complex public indoor space, indoor navigation has attracted great attention in the field of location based service. In this paper, we design and develop a navigational electronic map for the complex indoor space based on the spatial location technology and mobile map. For the purpose of obtaining the accurate indoor location, the quick response(QR) code is used, and a set of position coding rules for the complex indoor structures are designed. The library of Wuhan University is used as a sample area in the study. Then a mobile navigation electronic map, which is friendly and easy to provide indoor navigation service as well as to advise the optimal path in the library, is developed and implemented.

Key words: indoor location, quick response code technology, indoor navigation, optimal path, library