Journal of Convergence for Information Technology (융합정보논문지)

Convergence Society for SMB (중소기업융합학회)
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Jamming Effect of Phase-Coded Pulse Compression Radar

위상코드 펄스압축 레이더의 재밍 효과

  • Lim, Joong-Soo (Division of Information Communication, Baekseok University)
  • Received : 2019.03.12
  • Accepted : 2019.05.20
  • Published : 2019.05.28
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Abstract

This paper describes the jamming effect of phase-coded pulse compression(PCPC) radar. Barker code radar, a typical PCPC radar, separates transmission pulses into 13 or 31 small pulses and phase modulates and transmits each pulse signal to increase radar detection efficiency and reduce the influence of jamming. Generally, when the radar is subjected to jamming, the detection distance becomes shorter and the detection error rate becomes higher. In the case of noise jamming or carrier jamming on the PCPC radar, the jamming effect is very small for no phase-coded convergence. However, the jamming effect is large in the case of synchronous jamming using the pulse-coded signal as a jamming signal with DRFM. It can be seen that the jamming effect increases when the storage time of the pulse-coded signal is prolonged. This study is considered to be useful for PCPC radar and EW jamming system design.

본 논문은 위상코드 펄스압축(PCPC) 레이더의 재밍 효과에 대해서 기술하였다. 대표적인 PCPC 레이더인 Barker code 레이더는 송신 펄스를 13개 또는 31개의 작은 펄스로 분리하여 각 펄스신호를 위상변조하여 송신함으로써 레이더 탐지효율을 높이고 잡음이나 재밍에 대한 영향을 감소시킨다. 일반적으로 레이더는 재밍을 받으면 탐지거리는 짧아지고 탐지 에러율은 높아진다. PCPC 레이더에 잡음재밍이나 반송파 재밍을 실시한 경우에는 펄스코드 융합이 없어서 재밍 영향이 매우 작았지만, DRFM 등을 이용하여 펄스코드 신호를 복재하여 재밍신호로 사용한 동기재밍 경우에는 재밍효과가 크게 나타났다. 특히 펄스코드 신호 복재시간이 길어지면 재밍효과가 증가되는 것을 볼 수 있다. 본 연구는 펄스압축 레이더와 전자전 재밍장치 재밍신호 설계에 유용하게 활용할 수 있다고 판단된다.

Keywords

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Fig. 1. Phase-Coded Pulse Compression Radar

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Fig. 2. Phase-Coded Pulse Signal

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Fig. 3. Video output at n=7 for PCPC Radar l

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Fig. 4. Repeater Jammer with DRFM

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Fig. 5. Effect of Noise Jamming for PCPC Radar at n=31

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Fig. 6. Effect of CW Jamming for PCPC Radar at n=31

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Fig. 7. Effect of Coherent Jamming for PCPC Radar at n=31 with 1/4 pulse-code

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Fig. 8. Effect of Coherent Jamming for PCPC Radar at n=31 with 1/2 pulse-code

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Fig. 9. Effect of Coherent Jamming for PCPC Radar at n=31 with 1 pulse-code

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Fig. 10. Block Diagram of DRFM

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