Wideband digital receiver comprising a signal detection mechanism

摘要

A wideband microwave digital receiver comprises an antenna, an amplifier, and a digital IFM device for measuring the frequency of the received signal or signals. A consistency indicator indicates the consistency of the frequency measurements and is calculated by analyzing the values taken by said measurements obtained over two consecutive transforms. The presence of signal pulses at the input of the receiver is detected when said indicator signals the consistency of at least one frequency measurement.

主权项

1. A wideband microwave digital receiver, comprising:
a digital Instantaneous Frequency Measurement (IFM) device comprising: a digital frequency meter configured to measure a frequency of one or more received signals using digital transforms; and a processing circuit configured to determine a consistency indicator that represents a consistency of the frequency measurements, said consistency indicator being calculated by comparing two values taken by said frequency measurements obtained over two consecutive transforms, a frequency measurement being consistent if a deviation between said two values is less than or equal to a predetermined value, said processing circuit being further configured to detect a presence of signal pulses at an input of the wideband microwave digital receiver being detected when said consistency indicator signals the consistency of at least one frequency measurement.