Summary of Conference Call on Navigation Anti-Jamming Technology Industry Overview - The conference call focused on the navigation anti-jamming technology within the context of the satellite navigation industry, particularly highlighting the vulnerabilities of civilian navigation systems compared to military systems [2][3][4]. Key Points and Arguments 1. **Vulnerability of Civilian Navigation Systems**: The recent navigation signal anomaly in Nanjing highlighted the weaknesses in civilian navigation systems against electromagnetic interference, raising concerns about potential risks in critical sectors such as transportation, finance, and energy [2][3][10]. 2. **Comparison with Military Systems**: Military applications of Global Navigation Satellite Systems (GNSS) have a higher demand for anti-jamming capabilities due to their critical role in precision guidance and combat operations. For instance, during the Russia-Ukraine conflict, the effectiveness of GPS-guided munitions dropped significantly under electronic warfare conditions [3][4]. 3. **Technological Advancements**: China has made significant progress in anti-jamming technology, improving its capability from resisting 60 dB of jamming signals in 2012 to around 100 dB currently, aligning with international standards. This technology is primarily used in military equipment and is gradually being adapted for civilian use [2][9]. 4. **Market Demand for Anti-Jamming Devices**: There is a substantial demand for anti-jamming devices in the civilian market, with potential market size reaching hundreds of billions to trillions of yuan. Key sectors such as transportation, finance, and energy are expected to lead the adoption of these technologies [3][13][14]. 5. **Challenges in Civilian Applications**: While military-grade anti-jamming technologies can be adapted for civilian use, challenges include increased hardware costs and the need to balance performance with cost-effectiveness [3][12][11]. 6. **Strategic Measures by Beidou System**: The Beidou system has implemented measures such as frequency compatibility with GPS to enhance global application capabilities and mitigate potential interference [6][2]. 7. **Types of Navigation Interference**: Navigation interference is categorized into suppression interference, which disrupts signal reception, and deception interference, which misleads users with false information. Both types pose significant risks, especially in military contexts [7][8]. 8. **Future Development Directions**: To enhance anti-jamming capabilities, future efforts should focus on optimizing array antenna technology, applying advanced algorithms, upgrading hardware, and fostering collaboration with relevant departments to improve national electromagnetic security [11][9]. Additional Important Insights - The Nanjing incident is noted as one of the most severe publicized cases of navigation signal disruption in recent years, emphasizing the urgent need to strengthen civilian navigation systems against interference [10]. - The civilian sector's increasing reliance on GNSS for various applications necessitates a robust anti-jamming capability to ensure service reliability and safety [4][10]. - The potential for integrating military-grade technologies into civilian applications could significantly enhance the resilience of critical infrastructure against electromagnetic threats [11][12].