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Sep.  2012
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The Impact of Sidelobe Suppression in Shift-frequency Jamming against LFM

  • Received Date: 2012-05-03
    Accepted Date: 2012-09-12
  • Sidelobe Suppression (SS) can be found on almost every Linear Frequency Modulated (LFM) pulse radar receiver|Shift-Frequency Jamming (SFJ) is an important method to realize deception jamming using the inherent coupling property between time-delay and frequency-shift of this LFM signal. So, the inter-ambiguity function (IAF) of LFM with SS using normalized parameters including time-delay rate and shift-frequency rate is analyzed. Then the 3:1 cone than weighted, Hamming weighted and cosine square weighted are focused and some parameters related to detection are analyzed. Compared with the none SS, the weighted shift-frequency signal to Jamming loss and the weighted shift-frequency jamming to noise loss are present like M function having the max shift-frequency rate point equal to 0.29. And the impact of weighted shift-frequency pulse-width loss are decide by none shift-frequency.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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The Impact of Sidelobe Suppression in Shift-frequency Jamming against LFM

    Corresponding author:
  • 1. (School of IoT Engineering, Jiangnan University, Wuxi 214122, China)
  • 2. (Department of Electronic Engineering, Tsinghua University, Beijing 100084, China)

Abstract: Sidelobe Suppression (SS) can be found on almost every Linear Frequency Modulated (LFM) pulse radar receiver|Shift-Frequency Jamming (SFJ) is an important method to realize deception jamming using the inherent coupling property between time-delay and frequency-shift of this LFM signal. So, the inter-ambiguity function (IAF) of LFM with SS using normalized parameters including time-delay rate and shift-frequency rate is analyzed. Then the 3:1 cone than weighted, Hamming weighted and cosine square weighted are focused and some parameters related to detection are analyzed. Compared with the none SS, the weighted shift-frequency signal to Jamming loss and the weighted shift-frequency jamming to noise loss are present like M function having the max shift-frequency rate point equal to 0.29. And the impact of weighted shift-frequency pulse-width loss are decide by none shift-frequency.

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