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Reduction of Doppler and Range Ambiguity Using AES-192 Encryption-Based Pulse Coding.

Luke Kamrath1, Michael Baginski1, Scott Martin2

  • 1Department of Electrical and Computer Engineering, Auburn University, 200 Broun Hall, Auburn, AL 36849, USA.

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Summary
This summary is machine-generated.

This study explores using Advanced Encryption Standard (AES-192) derived Binary Phase Shift Key (BPSK) radar signals. This method effectively mitigates Doppler and range ambiguities, enhancing radar performance without maximum unambiguous range limits.

Keywords:
BPSKBarkerCLEANIpatovencryptionpseudo-randomradarrandomrange-ambiguity

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Area of Science:

  • Radar Systems Engineering
  • Signal Processing
  • Cryptography

Background:

  • Ambiguities in Doppler and range are significant challenges in radar systems.
  • Existing modulation techniques like Ipatov-Barker codes offer partial solutions but have processing limitations.
  • Advanced Encryption Standard (AES-192) offers a robust cryptographic foundation for novel signal modulation.

Purpose of the Study:

  • To investigate the efficacy of an AES-192 derived Binary Phase Shift Key (BPSK) sequence for radar signal modulation.
  • To assess the capability of this novel BPSK sequence in mitigating Doppler and range ambiguities.
  • To compare the performance of the AES-192 BPSK sequence against established radar codes.

Main Methods:

  • Generation of a BPSK sequence utilizing the AES-192 algorithm.
  • Application of the AES-192 BPSK sequence for radar signal modulation.
  • Utilizing a CLEAN algorithm to mitigate side lobes in the matched filter response.
  • Comparative performance analysis against Ipatov-Barker Hybrid BPSK codes.

Main Results:

  • The AES-192 BPSK sequence exhibits a single main lobe with minimal side lobes after CLEAN algorithm processing.
  • The proposed sequence demonstrates no inherent maximum unambiguous range limitation.
  • Randomizing pulse location within the Pulse Repetition Interval (PRI) significantly extends the maximum unambiguous Doppler frequency shift.

Conclusions:

  • The AES-192 BPSK sequence presents a promising approach for advanced radar modulation.
  • This method effectively overcomes key limitations of traditional radar ambiguity mitigation techniques.
  • The AES-192 BPSK sequence offers enhanced flexibility and performance for complex radar applications.