High-precision positioning location information provides an important reference for the realization of the Internet of Vehicles business. The more accurate the location information, the higher the reliability of the Internet of Vehicles business. Therefore, high-precision positioning research is one of the key technologies to realize the Internet of Vehicles business. In outdoor scenarios, commonly used positioning technologies include GPS, Beidou, Assisted GPS (A-GPS) and positioning based on wireless communication cellular networks, such as cell ID technology (Cell-ID), enhanced cell ID technology (Enhance Cell ID, ECID). Among them, the Beidou navigation and positioning system is a satellite positioning system with independent intellectual property rights in my country. The goal is to form a complete national satellite navigation application industry support, promotion and guarantee system, and promote the wide application of satellite navigation in various industries in the national economy and society. The positioning technology is more complicated in indoor scenarios. In order to meet the performance requirements of indoor positioning, domestic and foreign scholars and scientific research institutions have studied the use of WLAN, Radio Frequency Identification (RFID), and Ultra Wide Band (UWB) in recent years. , Bluetooth and other wireless networks to realize the positioning technology of indoor mobile terminals, its positioning accuracy can reach meter level, and UWB technology can even reach centimeter level accuracy.