F-22 Раптор
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ursus ( Слушатель ) |
| 27 июн 2008 11:57:25 |
Тред №40224
новая дискуссия Дискуссия 159Цитата: Breeze
- На:
http://www.globalsec…ionics.htm
Ну и где тут про 190 км, болтун?
"The Low Probability of Intercept (LPI) capability of the radar defeats conventional RWR/ESM systems. The AN/APG-77 radar is capable of performing an active radar search on RWR/ESM equipped fighter aircraft without the target knowing he is being illuminated. Unlike conventional radars which emit high energy pulses in a narrow frequency band, the AN/APG-77 emits low energy pulses over a wide frequency band using a technique called spread spectrum transmission. When multiple echoes are returned, the radar's signal processor combines the signals. The amount of energy reflected back to the target is about the same as a conventional radar, but because each LPI pulse has considerably less amount of energy and may not fit normal modulation patterns, the target will have a difficult time detecting the F-22."
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