Automatic Signal Assignment

The new PRED designs feature an automatic signal assignment manager that allows the PRED to timeshare a single DRFM or VCO among several emitters simultaneously.  In addition, the manager will change ECM techniques depending on what radar modes it is receiving.  Radar modes are defined by detected characteristics such as pulse width, PRI and whether the emitter is scanning or non-scanning.

The figure below shows our six emitter environment with both interleaved and overlapping scans - the top trace depicts input video to the PRED.  The lower traces show how the PRED generates the DRFM_Write and DRFM_Read commands during each illumination as well as the number corresponding to the ECM technique that is being generated.  Up to eight ECM techniques can be predefined by the operator, and in this case, ECM 0 is assigned to Video 0, ECM 1 is assigned to Video 1, and so on. Note that in this example environment, each emitter can be uniquely identified based on PRI and PW.  This clearly shows the PRED's ability to not only jam multiple emitters simultaneously but also to generate multiple ECM techniques depending on the radar's characteristics.

The video clip shows the PRED generating 3 different ECM techniques for 3 different emitters: an inbound CRV for the first emitter, a fixed inbound false target for another and a CRBM technique for the third.

In each of the videos, the top (yellow) trace of the oscilloscope shows the video signal input to the PRED.  The bottom (blue) trace shows the output of the PRED which can be used as the DRFM_Read strobe or to modulate a VCO.

click here to begin the video clip