论文部分内容阅读
采用延迟线鉴频器的瞬时测频接收机来测频,在脉冲制信号环境中显示了良好的特性.但是对于时间上重迭或复杂的信号,瞬时测频接收机的性能就要下降。本文对诸如脉冲制、连续波(CW)、线性调频(FM)和相位编码信号的各种信号类型用实验论证法作了分析.本文详细论述了两个时间重合脉冲信号时的情况.此外,本文使用一个换算因子来考虑在限幅前置放大器中一个弱信号被一个较强信号抑制的与过激励有关的效应.
Frequency measurement using an instantaneous frequency-measuring receiver using a delay line frequency discriminator shows good characteristics in a pulsed signal environment, but for time-overlapping or complex signals, the performance of an instantaneous frequency-measuring receiver is reduced. In this paper, various signal types such as pulse, continuous wave (CW), chirp (FM) and phase-coded signal are analyzed by the experimental proof.The paper discusses in detail the situation of two time coincidence pulse signals.In addition, This article uses a scaling factor to consider the overshoot-related effects of a weak signal being suppressed by a stronger signal in a limiting preamplifier.