关键词: 人工神经网络, 百度地图, 全球定位系统（GPS）, 反向传播（BP）, 解密

Abstract: This paper presents a decryption method of Baidu map’s coordinates. A converting interface from GPS coordinates to Baidu map’s coordinates given by Baidu is utilized to get pairs of GPS-Baidu coordinates. The inverse converting function is fitted based on BP neural network. The trained BP network is used to predict GPS coordinates corresponding to some new Baidu coordinates. Experimental result demonstrates that the converted GPS coordinate given by this method is closed to the real GPS coordinate. Hence the decrypted result is ideal.

Key words: artificial neural network, Baidu map, Global Positioning System（GPS）, Back Propagation（BP）, decryption