Correlated Range - Velocity (CRV) Pull

This video clip shows a 4 element - 4 position staggered PRI pattern being used as the input to the PRED.  

The PRED is programmed to generate a very long correlated range-velocity (CRV) technique that starts on the skin and pulls inbound through many PRI.

This clip clearly shows the benefits of using PRI prediction for generating long RGPO or RGPI techniques.  Each PRI has false targets that are placed correctly.  Traditional methods of generating pulls beyond a PRI such as "profile priority mode" or "pipeline mode" either do not generate false targets for each pulse or only generate a single false target for each pulse.  Both of these methods can adversely affect ECM effectiveness.

PRI Prediction is the only viable method of placing multiple coherent false targets at ranges that exceed a PRI.  In addition, many radars use multiple modes such as Low, Medium and High PRF.  PRI prediction can be used to place false targets that appear at the same range independent of the radar mode.

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