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An Anti-Jamming Method against Two-Dimensional Deception Jamming by Spatial Location Feature Recognition.

Zhidong Liu1,2, Qun Zhang1,2,3, Kaiming Li1,2

  • 1The Institute of Information and Navigation, Air Force Engineering University, Xi'an 710077, China.

Sensors (Basel, Switzerland)
|November 27, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a new anti-jamming method for chirp radars against interrupted sampling repeater jamming (ISRJ). The technique identifies and eliminates deceptive false targets by analyzing their spatial characteristics.

Keywords:
deception jamminginterrupted sampling repeater jamming (ISRJ)inverse synthetic aperture radar (ISAR)twinning waveform

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Area of Science:

  • Radar systems engineering
  • Electronic warfare
  • Signal processing

Background:

  • Interrupted sampling repeater jamming (ISRJ) poses a significant challenge to chirp radars, creating deceptive false targets.
  • Existing methods for countering ISRJ have limitations in identifying and addressing the complex spatial features of these false targets.

Purpose of the Study:

  • To propose a novel anti-jamming method for chirp radars to counter ISRJ.
  • To identify and eliminate two-dimensional deception false targets by analyzing their spatial location characteristics.

Main Methods:

  • The proposed method analyzes the spatial location characteristics of two-dimensional deception false targets.
  • It involves adjusting radar transmitted signal parameters to simultaneously transmit an anti-jamming signal and perform false target identification and elimination in both range and azimuth dimensions.
  • Optimal signal parameters are determined by comparing anti-jamming strategies in the range dimension.

Main Results:

  • A mathematical model is derived to establish the relationship between false target spatial distribution and radar transmitted signal parameters.
  • Simulations demonstrate the effectiveness of the proposed method in identifying and eliminating false targets.
  • The study identifies optimal signal parameters for enhanced anti-jamming performance.

Conclusions:

  • The developed anti-jamming method effectively identifies and eliminates deception false targets generated by ISRJ in chirp radars.
  • The method's validity is confirmed through mathematical modeling and simulation, offering a robust solution for radar electronic protection.
  • Optimizing radar signal parameters is crucial for successful implementation of this anti-jamming strategy.