转个关于F-22的

“I have been thinking in all those digital RWR issues and my conlussion is that all of them, as mentioned by Obi Offiah, can be included into the digital RWR revolution. In fact, the F-22, described by Bill Sweetman as an antenna farm (it has 30 plus antennas smoothly blended into the wings and fuselage), has three types of analog receivers, but there are plans to reduce them to a broadband digital receiver (see Avionics Magazine "Air dominance with the F-22 raptor") as part as the widest Lot 5 modernization effort. Precission location of ground and airborne threats by ESM (Electronic Support Measures) is essential in the battlefield of the future. F-22's ESM, the ALR-94, can detect and track a target with very high accuracy, as far as 2o by 2o in azimuth and elevation. This is comparable as the best tactical SIGINT/jamming aircraft such as Prowler/Growler ICAP-III. This "almost SIGINT" capability will give future fighters and enormous advantage and the possibility of being employed in the SIGINT or jamming role with minmal modifications. F-16 block 60 belongs to this revolution, but the main difference between this fighter and the new stealth ones (F-22, F-35...) is that it has an advanced jamming system with is not present in the new generation of stealth aircraft that encompasses stealth above all.”“I have been thinking in all those digital RWR issues and my conlussion is that all of them, as mentioned by Obi Offiah, can be included into the digital RWR revolution. In fact, the F-22, described by Bill Sweetman as an antenna farm (it has 30 plus antennas smoothly blended into the wings and fuselage), has three types of analog receivers, but there are plans to reduce them to a broadband digital receiver (see Avionics Magazine "Air dominance with the F-22 raptor") as part as the widest Lot 5 modernization effort. Precission location of ground and airborne threats by ESM (Electronic Support Measures) is essential in the battlefield of the future. F-22's ESM, the ALR-94, can detect and track a target with very high accuracy, as far as 2o by 2o in azimuth and elevation. This is comparable as the best tactical SIGINT/jamming aircraft such as Prowler/Growler ICAP-III. This "almost SIGINT" capability will give future fighters and enormous advantage and the possibility of being employed in the SIGINT or jamming role with minmal modifications. F-16 block 60 belongs to this revolution, but the main difference between this fighter and the new stealth ones (F-22, F-35...) is that it has an advanced jamming system with is not present in the new generation of stealth aircraft that encompasses stealth above all.”