Multi-GNSS High Precision Antenna User Requirements

　　User requirements for multi-GNSS high-precision antennas

　　At a time when global satellite navigation system (GNSS) technology is booming, multi-GNSS high-precision antennas, as key equipment for achieving precise positioning and reliable communication, have distinctly diversified and specialized user requirements. In-depth analysis of these requirements will not only help antenna R&D and production companies to accurately grasp the market direction, but also provide strong technical support for related industry applications.

　　I. Overview of core requirements

　　1.1 High-precision positioning requirements

　　High-precision positioning is the core user requirement for multi-GNSS high-precision antennas. Whether it is the centimeter-level control of the vehicle's own position in the autonomous driving scenario, or the sub-meter or even higher-precision collection of geographic information in the surveying and mapping field, it depends on the antenna's accurate reception and processing of multi-satellite navigation system signals. For example, in urban autonomous driving tests, vehicles must use high-precision antennas to accurately obtain their own positions in order to safely perform path planning, obstacle avoidance and other operations in complex road environments, and avoid traffic accidents caused by positioning errors.

　　1.2 Reliability and stability requirements

　　Users expect multi-GNSS high-precision antennas to work stably in various complex environments. In field surveying and mapping operations, antennas must withstand the test of severe weather such as high temperature, severe cold, heavy rain, and dust; in industrial application scenarios, they must be able to resist the influence of factors such as electromagnetic interference and mechanical vibration. Taking agricultural drones as an example, when they are operating in farmland, they may face strong winds, heavy rains and other weather conditions. At this time, high-precision antennas must maintain stable signal reception to ensure that the drones fly accurately according to the predetermined route and complete tasks such as pesticide spraying and sowing.

　　1.3 Multi-system compatibility requirements

　　With the continuous improvement of multiple satellite navigation systems around the world, users hope that antennas can be compatible with multiple systems such as GPS, Beidou, Galileo, GLONASS, etc. at the same time to achieve coordinated reception and processing of multi-system signals. This will not only increase the number of satellites that can be received and improve positioning reliability, but also use the complementary advantages of each system to improve positioning accuracy. For example, in areas with more obstruction of satellite signals such as mountainous areas, multi-system compatible antennas can simultaneously receive satellite signals from different systems, and obtain more accurate location information through signal fusion algorithms.

　　II. Industry segmentation needs

　　2.1 Demands in the field of intelligent transportation

　　In the field of intelligent transportation, autonomous driving vehicles have particularly stringent requirements for multi-GNSS high-precision antennas. In addition to high-precision positioning, antennas are also required to have the characteristics of low latency and high refresh rate to meet the needs of real-time vehicle decision-making. At the same time, automotive-grade reliability and stability are also key, and strict environmental testing and certification are required to ensure normal operation within a temperature range of -40℃ to 85℃. In addition, in order to adapt to the development trend of intelligent vehicles, antennas must also support data fusion with other sensors (such as lidar and cameras) to achieve more accurate environmental perception and decision-making.

　　The intelligent motorcycle operation and maintenance system also has specific requirements for high-precision antennas. In order to achieve accurate positioning and effective management of vehicles, antennas are required to be able to report vehicle location information in real time and accurately, and have a certain anti-interference ability to cope with the challenges of complex electromagnetic environments in cities.

　　2.2 Demands in the field of surveying and mapping and geographic information

　　The surveying and mapping and geographic information industry has extremely high requirements for the positioning accuracy and stability of multi-GNSS high-precision antennas. In topographic surveying and engineering surveying, the phase center stability of the antenna directly affects the accuracy of the measurement results, so the antenna is required to have extremely low phase center drift. At the same time, in order to improve work efficiency, the antenna is required to quickly capture and track satellite signals and reduce the measurement waiting time. In addition, since surveying and mapping work is often carried out in the field, the portability and easy installation of the antenna have also become important requirements, which facilitates the staff to quickly carry out measurement work in different locations.

　　2.3 Demands in the field of precision agriculture

　　The development of precision agriculture cannot be separated from the support of multi-GNSS high-precision antennas. When agricultural machinery and drones are operating in farmland, antennas are required to provide high-precision positioning to realize automated and intelligent sowing, fertilization, irrigation and other operations, and improve agricultural production efficiency and resource utilization. At the same time, considering the particularity of the agricultural operating environment, the antenna must have good waterproof, dustproof and corrosion-resistant properties to adapt to long-term outdoor use. In addition, cost-effectiveness is also a focus of agricultural users. They hope to reduce the purchase and maintenance costs of antennas while ensuring performance.

　　2.4 Demand in the aerospace field

　　In the aerospace field, multi-GNSS high-precision antennas need to meet the requirements of high dynamics and high reliability. During the high-speed flight of the aircraft, the antenna must be able to stably receive satellite signals to ensure the accuracy of navigation and communication. At the same time, due to the strict restrictions on weight and volume of aerospace equipment, the antenna must be miniaturized and lightweight. In addition, to ensure flight safety, the antenna must also have anti-interference and anti-radiation capabilities to cope with complex space electromagnetic environments and cosmic radiation.

　　III. Future demand trends

　　With the continuous development of emerging technologies such as 5G, the Internet of Things, and artificial intelligence, user demand for multi-GNSS high-precision antennas will also continue to evolve. In the future, users will pay more attention to the integrated application of antennas with other technologies, such as combining with 5G networks to achieve faster and more stable positioning data transmission, and combining with artificial intelligence algorithms to achieve intelligent environmental perception and adaptive adjustment. At the same time, the requirements for the intelligence and integration of antennas will become higher and higher. It is hoped that the antennas can have functions such as self-diagnosis and self-optimization to reduce operation and maintenance costs. In addition, with the rapid development of low-orbit satellite constellations, users' demand for multi-GNSS high-precision antennas that support low-orbit satellite signal reception will also increase.