Цитата Сообщение от boyan Посмотреть сообщение
РЭБ на Апаче это что-то новое
http://www.deagel.com/Helicopter-Pro...001686001.aspx

--- Добавлено ---

4.85 AN/ALQ-136(V)5 RADAR JAMMER COUNTERMEASURES SET (RJAM)
4.85.1 System Description. The AN/ALQ-136(V)5 Radar Jammer Countermeasures Set (RJAM) is an active Electronic Counter Measure (ECM) system designed to protest the helicopter against certain Anti-Aircraft Artillery (AAA) and Surface-to-Air Missile (SAM) threats. It is a self-contained system that receives, detects, analyzes, and processes those pulse radar signals usually associated with hostile fire control radars, and initiates the appropriate jamming in an attempt to effectively counter the detected threats. The RJAM system consists of a Receiver/Transmitter (R/T) and two antennas; one antenna used for reception and one antenna used for transmission. The system performs effectively as both a detection system and a jamming system for pulse radar threats. The receive antenna receives pulse radar signals and supplies them to the R/T receiver circuits via a special low-loss
coaxial cable. The receiver processes this Radio Frequency (RF) energy and extracts the video (pulses) fromit. This video is filtered, limited, amplified, and detected, and provided to the processor section of the R/T for analysis. The processor compares the resultant video with the stored threat signal parameters to determine whether the received signal originated from a threat. These signal parameters include:
• Pulse Width
• Pulse Spacing
• Pulse Repetition Interval
• Signal Strength
• Modulation Type
• Center Frequency
If it is determined that a threat exists, the processor queries the stored jamming parameters table for the appropriate jamming profile. If one exists, the jamming parametersare extracted, to include center frequency, modulation type, and jamming technique, and sent to the transmitter section. The transmitter section generates the appropriate jamming signals and applies them to the transmit antenna for radiation via another low-loss coaxial cable. The System can detect, process, and jam multiple threats in a multiplex fashion using one set of antennas; however, the current system configuration only provides for forward sector coverage for pulse radar threats.