초록 ▼

A method and system is provided for real-time detection of important multiple pulsed or CW signals of varying amplitude and frequency, from a group of simultaneously intercepted wideband intermediate frequency (IF) channels. The method is implemented in a channelized receiver system with a parameter

A method and system is provided for real-time detection of important multiple pulsed or CW signals of varying amplitude and frequency, from a group of simultaneously intercepted wideband intermediate frequency (IF) channels. The method is implemented in a channelized receiver system with a parameter encoder which filters the IF signals in a time-shared mode by dividing the IF channel bandwidth into progressively decreasing sub-band levels, multiplexing the IF signals from each sub-band and analyzing the time multiplexed IF signals to obtain the IF signal parameters. The system is flexible with programmable parameters and has the ability to eliminate most of the spurious signals with high probability of interception of the real signals. Conventional pulse descriptor words, band limited pre-detection samples and time-frequency pulse images are output for subsequent analysis or tactical application.

대표청구항 ▼

[ What is claimed is:] [15.] A channelized parameter measurement receiver system for real-time detection of important IF signals from a simultaneously intercepted plurality of wideband high frequency RF signals of varying amplitude and frequency, comprising:an RF converter for converting the high fr

[ What is claimed is:] [15.] A channelized parameter measurement receiver system for real-time detection of important IF signals from a simultaneously intercepted plurality of wideband high frequency RF signals of varying amplitude and frequency, comprising:an RF converter for converting the high frequency RF signals into wideband intermediate frequency (IF) signals;a channelized receiver for dividing the wideband IF signals into a plurality of IF channels; anda parameter encoder for receiving at least one IF channel of IF signals and detecting the IF signal characteristics in time-shared mode, comprising:a cascade of bandpass filters having filters grouped in a plurality of filter levels, each said filter level filtering said IF signals by dividing the IF channel bandwidth into a sub-band level, each said sub-band level having a progressively narrower bandwidth than preceding sub-band levels,a pulse detection means for receiving said IF signals in sub-band time multiplexed mode, and for analyzing said IF signals to obtain the IF signal parameters according to a predetermined sensitivity,a control processor means for controlling the parameter encoder according to commands from an external source; anda pulse descriptor word (PDW) assembler means connected to said control processor means for producing a pulse descriptor word for each said important IF signal.