1. PRI Prediction Enhances EW Training By Scott McDonald & Ken McRitchie Ottawa, Ontario, Canada Visit us at http://www.mc-cm.com MC Countermeasure Inc.

2. 19-Feb-20022Visit us at http://www.mc-cm.com Overview Training vs Operational ECM Need for Prediction PRED Features PRED Performance Summary

3. 19-Feb-20023Visit us at http://www.mc-cm.com DRFM DRFM-based ECM originally developed for fully coherent applications Constant PRI makes up-range false targets easy Would like to do same with non-coherent/coherent on receive radars

4. 19-Feb-20024Visit us at http://www.mc-cm.com Training Application RAN/CF Programs DRFM-based ECM

5. 19-Feb-20025Visit us at http://www.mc-cm.com Operational vs Training Mil-spec Protect platform Configuration control Optimized by threat Highly integrated, compact size Benign environment Non-interference Highly programmable Generate a variety of ECM effects Must replicate current and future generation ECM

6. 19-Feb-20026Visit us at http://www.mc-cm.com Constant PRI

7. 19-Feb-20027Visit us at http://www.mc-cm.com Staggered PRI

8. 19-Feb-20028Visit us at http://www.mc-cm.com Radar Characteristics Surveillance, search, acquisition, TTR, TI Constant, dwell shift, modulated or staggered PRI patterns –Multi-element/position –Sliding –Sinusoidal 2 us < PRI < 14 ms

9. 19-Feb-20029Visit us at http://www.mc-cm.com Isolation Many antennas compete for little space in most EW Training installations –Leads to insufficient isolation to transmit and receive simultaneously –Precludes cover pulse –Situation corrected with PRI prediction

10. 19-Feb-200210Visit us at http://www.mc-cm.com Features Fast “learning” –No UDF Prediction < 250 ns > 128 positions Adaptive Acquisition Fade mode TG Enhancements

11. 19-Feb-200211Visit us at http://www.mc-cm.com Block Diagram

12. 19-Feb-200212Visit us at http://www.mc-cm.com Integration with TG

13. 19-Feb-200213Visit us at http://www.mc-cm.com Optional FT Generator

14. 19-Feb-200214Visit us at http://www.mc-cm.com Performance 1

15. 19-Feb-200215Visit us at http://www.mc-cm.com Performance 2 1 10 100 1000 110100100010000 Minimum PRI (us) Stagger Pattern Length Known Radar Parameters Specification Measured 15/8/01

16. 19-Feb-200216Visit us at http://www.mc-cm.com Summary PRI prediction is necessary to effectively use a DRFM-based system in a modern EW training application –Prediction circuitry is not standard MC Countermeasures has developed a line of predictors that can be easily interfaced to existing training systems –Integrated with existing TG –Provide additional TG capability –Work around insufficient antenna isolation

17. 19-Feb-200217Visit us at http://www.mc-cm.com Acknowledgements The authors would like to acknowledge the contributions of Dan Grise and Remi Gauvin who did much of the hardware and software implementation. For Further information please feel free to contact us at: MC Countermeasures Inc. 39 Robertson Road – Suite 256 Nepean, Ontario, K2H 8R2, Canada Tel: +1(613) 721-1552 Fax: +1 (613) 721-1553 e-mail: info@mc-cm.com