The 24 satellites that keep the GPS (Global Positioning System) functioning have a higher reputation than finding the nearest gas station. The military relies on GPS for ground missions and missile systems. Soldiers are so addicted to GPS that military personnel and agencies warn that GPS may become a single risk of making mistakes. If the system fails, the armed forces will regularly perform exercises without GPS. Civilian lives around the world rely on GPS more than we realize. Although the 24 satellites may fail due to a variety of technical reasons, there is concern that hostile technology may prevent opponents from accessing GPS. This attack affects critical applications in civilian infrastructure (power and ATM networks are based on GPS) and severely disrupts military operations.
In recent years, a team of the aerospace communication system implementation team has developed BLISS technology to intercept interfering signals that may interfere with GPS reception. Since the performance of GPS signals on the earth is very low, the GPS signals received by users on the ground are very susceptible to interference. On the battlefield, the enemy can deliberately interfere with GPS to prevent combatants from knowing their location. In China, there are several well-documented cases where gps jammer purchased via the Internet are used to reject location information. Personal protection jammers are especially illegal, but still easy to use and have been used to bypass GPS tracking technology.
“BLISS uses many proprietary algorithms to estimate certain properties of high-performance jammers, which can mitigate the effects of various strong jammers,” Dr. Dr. Philip Dafesh (Philip Dafesh), one of the bliss architects. Using existing receivers, BLISS can be implemented as an independent device between the GPS receiver and its antenna, or it can be integrated into the future receiver chipset. Known interference cancellation techniques focus on eliminating narrowband interference in a small frequency range. If the interference frequency changes rapidly, these techniques will fail. Compared with these conventional technologies, BLISS can also withstand interference signals suitable for signals of interest, and is insensitive to interference signals that rapidly change its frequency or phase characteristics.
The technology is promising and has been licensed to Orolia’s subsidiary Talen-X, which specializes in producing precise time and frequency products to solve global problems in satellite navigation systems. The research and development of BLISS was initially funded by the Aerospace Innovation Laboratory (iLab). The purpose is to encourage engineers to research innovative solutions to space-related problems. BLISS is an example of how to turn ideas generated in iLab into practical solutions. Esteban Valles, Head of the Digital Communication Implementation Department, Ph.D. said: “We have a very talented and diverse workforce who use the latest technology in different fields.