Abstract: For the application of information sharing and transmission between roadside intelligent devices and self-driving vehicles equipped with high precision maps, this paper proposes a method of dynamic generation and expression of high precision relative positions. The method relies on the common key information of high precision map to encode and decode, and realizes relative location information transmission through geometric matching technology, which improves the security of high precision location information transmission and the compatibility between different maps. This paper gives a complete information generation method, encoding and decoding flow scheme, and obtains good experimental results.

Key words: autonomous driving, location information transmission, location reference method, common reference point, geometric matching, high precision map