Dai, H.; Zhao, Y.; Su, H.; Wang, Z.; Bao, Q.; Pan, J. Research on an Intra-Pulse Orthogonal Waveform and Methods Resisting Interrupted-Sampling Repeater Jamming within the Same Frequency Band. Remote Sens.2023, 15, 3673.
Dai, H.; Zhao, Y.; Su, H.; Wang, Z.; Bao, Q.; Pan, J. Research on an Intra-Pulse Orthogonal Waveform and Methods Resisting Interrupted-Sampling Repeater Jamming within the Same Frequency Band. Remote Sens. 2023, 15, 3673.
Dai, H.; Zhao, Y.; Su, H.; Wang, Z.; Bao, Q.; Pan, J. Research on an Intra-Pulse Orthogonal Waveform and Methods Resisting Interrupted-Sampling Repeater Jamming within the Same Frequency Band. Remote Sens.2023, 15, 3673.
Dai, H.; Zhao, Y.; Su, H.; Wang, Z.; Bao, Q.; Pan, J. Research on an Intra-Pulse Orthogonal Waveform and Methods Resisting Interrupted-Sampling Repeater Jamming within the Same Frequency Band. Remote Sens. 2023, 15, 3673.
Abstract
Abstract: Interrupted-sampling repeater jamming (ISRJ) is a kind of intra-pulse coherent decep-tion jamming that can generate false target peaks in the range profile and interfere with the de-tection and tracking of real targets. In this paper, an anti-ISRJ method based on the intra-pulse orthogonal waveform is proposed, which can recognize common interference signals by com-paring sub-signal matched filtering results. For some special scenes where real targets cannot be directly differentiated from false targets, a new recognition method based on the energy discon-tinuity of the interference signal in the time domain is proposed in this paper. The method pro-posed in this paper can recognize real and false targets in all ISRJ modes without any prior in-formation, such as jammer parameters, with a small amount of calculation, which is suitable for actual radar systems. Simulation experiments using different interference parameters show that although this method has a 3dB loss of pulse compression gain, it can completely suppress dif-ferent kinds of ISRJ interference when the SNR before pulse compression is higher than -20dB, with 100 % target detection probability.
Keywords
anti-interference; interrupted-sampling repeater jamming; intra-pulse orthogonal waveform; characteristics of continuity
Subject
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
