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目前雷达中频系统所采用的抗干扰措施,以对数中频放大器与“宽带放大器-限幅器-窄带放大器”电路比较有效。对于宽带阻塞式有源干扰,由于对数中频放大器有很大的输入动态范围,故它能避免接收机产生饱和或阻塞,使得比干扰强的雷达回波仍可以从干扰背景中分辨出来。此外,它又是抗海浪干扰的一个重要手段。发射脉冲宽度不太窄(大于0.1μs)
At present, the anti-jamming measures adopted by the radar IF system are more effective to the logarithmic IF amplifier and the “broadband amplifier - limiter - narrowband amplifier” circuit. For wideband blocking active interference, logarithmic IF amplifiers have a large input dynamic range and therefore avoid saturation or blockage of the receiver so that more powerful radar returns are still distinguishable from the interference background. In addition, it is an important means of anti-ocean wave interference. Transmit pulse width is not too narrow (greater than 0.1μs)