Recently, Liufen Technology, a high-precision positioning service provider incubated in NavInfo, was invited to participate in the 2022 China (Yizhuang) Intelligent Connected Vehicle Technology Week and the 9th International Intelligent Connected Vehicle Technology Annual Conference (CICV2022). Liufen Technology Chief scientist Li Junyi delivered a wonderful speech at the forum on high-precision maps and positioning technology for autonomous driving – “Application Analysis of GNSS High-precision Positioning in the Field of Autonomous Driving”.
Li Junyi said that smart cars are an important field of GNSS high-precision positioning applications. At present, the GNSS high-precision positioning technology is becoming more and more mature, and it can meet the accuracy requirements in most scenarios of intelligent driving. However, due to the characteristics of the automobile industry’s demand for GNSS high-precision positioning and the coexistence of various technical routes of vehicle-level high-precision positioning technology, functional safety and integrity issues are still key issues that need to be solved in the development and application of intelligent driving in the future.
In the face of new security challenges, major high-precision GNSS service providers are currently vigorously promoting integrity standard services. “Liufen Technology is also committed to providing ground enhancement services with integrity as an effective supplement to Beidou’s high-precision services and applications.” Li Junyi said.
The integrity monitoring service of GNSS high-precision positioning is actually a real-time leak detection and filling process for GNSS location services. It can confirm the accuracy range of the user’s location in advance, that is, the protection level (Protection Level-PL). When the PL exceeds the alarm threshold (Alarm Limit-AL), notify the user in time so that the user can make a reasonable response. Integrity monitoring is an important means to ensure the reliability of navigation and positioning, and it is also a threshold that GNSS must cross as the main navigation service and equipment.
As a professional GNSS high-precision location service provider, Liufen Technology conducts reliability monitoring and quantitative index analysis through enhanced information processing and transmission in the space segment, transmission segment, and user segment. Services and other GNSS system services, using “integrity enhancement + differential enhancement” and other technical means to achieve system integrity and differential enhancement, and at the same time provide integrity information as an important service content to users in need, so that high-precision satellites The application of positioning is more reliable and can better meet the diverse needs of users.
In Li Junyi’s view, the current distribution of intelligent driving’s demand for positioning integrity in satellite navigation and positioning is still unclear. However, under the continuous R&D and innovation of the technical team, the integrity monitoring service of Liufen Technology can realize the customized development of the integrity service functions of different users and meet the personalized needs of users in the intelligent driving industry.
At the same time, facing the strict functional safety requirements of intelligent driving vehicles, Liufen Technology fully embraces the rules of the automotive industry, and strives to be compliant with automotive industry standards such as software process improvement, information security, and functional safety. At present, Liufen Technology has obtained a number of qualification certificates such as Class A Surveying and Mapping Qualification, ASPICE L2 Automotive Software Development Management Capability Certification, Information Security Management System ISO/IEC 27001, and Quality Management System ISO9001.
In the future, in intelligent driving applications, GNSS high-precision positioning technology will play a more important role. Liufen Technology will also continue to improve its own capabilities, build a management system that is more in line with the quality standards of the automotive industry, and continue to provide professional technologies and services required by the intelligent driving industry.