特别是在现代电子战环境中,滤波器型瞬时测频技术比延迟线型瞬时测频技术更为有效.瞬时测频(IFM)指的是测量单个射频脉冲载频的一种装置/技术。最为常见的是,IFM 与测量固定时延支路(一般就是一段传输线)和无时延支路之间的相移差有 Especially in modern electronic warfare environments, the filter-based instantaneous frequency measurement technique is more effective than the delay line-based instantaneous frequency measurement technique.Frequency measurement (IFM) refers to a device / technique for measuring a single RF pulse carrier frequency. Most commonly, the phase shift between IFM and the measurement of a fixed delay branch (usually a transmission line) and a delayless branch is