This afternoon, the Nanjing Satellite Application Industry Association issued a detailed analytical statement concerning the navigation and positioning irregularities that took place in certain regions of Nanjing on December 17th. The statement clarified that the navigation malfunction stemmed from temporary interference and suppression of Global Navigation Satellite System (GNSS) satellite signals. It also emphasized that relying solely on offline maps was not a viable solution to this problem. The fact that the civilian frequency bands of Beidou and GPS are compatible showcases the far - sighted planning behind Beidou's civilian frequency bands. This compatibility not only enables smooth integration but also serves as a form of strategic deterrence, effectively curbing potential malicious interference. On the military front, Beidou's military frequency bands boast robust anti - jamming capabilities, which is why they remained unaffected during this incident. If it turns out that this irregularity was a temporary signal control measure implemented for security reasons during a significant event, it would be regarded as a standard security precaution. At present, the satellite signals have gradually resumed normal operation. The association has pledged to keep a close eye on industry developments and provide the public with scientific insights into satellite navigation technology.