Resonance processing of FMCW radar returns for accurate perimeter-breach detection of a flat-trajectory quasicylindrical target

Richard Fauconier; Webert Montlouis; Mandoye Ndoye

doi:10.1117/12.2558492

18 May 2020 Resonance processing of FMCW radar returns for accurate perimeter-breach detection of a flat-trajectory quasicylindrical target

Richard Fauconier, Webert Montlouis, Mandoye Ndoye

Author Affiliations +

Proceedings Volume 11423, Signal Processing, Sensor/Information Fusion, and Target Recognition XXIX; 114230M (2020) https://doi.org/10.1117/12.2558492
Event: SPIE Defense + Commercial Sensing, 2020, Online Only

Abstract

This work examines, from a theoretical perspective, novel aspects of processing the frequency-modulated continuous wave (FMCW) radar returns from a fast quasicylindrical target moving along a relatively flat trajectory. There are various realworld scenarios in which such objects (as threats) approach victim vehicles. Pinpointing, in time and space, when a flattrajectory quasicylindrical object has penetrated a safety perimeter around an intended victim vehicle is important for activating just-in-time or pre-positioned countermeasures. With radar-enabled countermeasures, the resolution of the radar and its tracking algorithm are determinative of the power and indiscriminateness that the countermeasure needs to defeat a fast-flying threat in the vicinity of the “sacred” perimeter. A smaller location error and smaller timing error enable lowerpower, more precise, and less dangerous countermeasures to be deployed. In this work we examine a method that can potentially reduce the uncertainty in the target’s observed location to less than ten (and closer to five) centimeters at critical instants. With its conventional tracking having established an incoming missile’s flight path, a small FMCW radar can switch into a “lying-in-wait” mode for “end-zone” observation, in which a pre-designed resonant discrete-time filter can be shifted back and forth along the frequency spectrum to determine the instant at which the flying target has breached the safety perimeter. This paper discusses one way in which this can be accomplished, examines the theoretical underpinnings of the method, and makes a preliminary assessment of the uncertainty that can be expected. Simulation results are reported.

Conference Presentation

Citation Download Citation

Richard Fauconier, Webert Montlouis, and Mandoye Ndoye "Resonance processing of FMCW radar returns for accurate perimeter-breach detection of a flat-trajectory quasicylindrical target", Proc. SPIE 11423, Signal Processing, Sensor/Information Fusion, and Target Recognition XXIX, 114230M (18 May 2020); https://doi.org/10.1117/12.2558492

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