Abstract
One important issue in radar jamming is the effect of inaccuracies in the radar position, which leads to a number of false targets entering the reference window of the constant false alarm ratio (CFAR) detector to reduce greatly. In this paper, two cooperative jamming methods specifically developed for a pulse compression radar with a CFAR detector are proposed with the aim of increasing the number of false targets when there is uncertainty regarding the radar position. First, several key parameters of the false targets are derived based on the principle of CFAR detection. Then, the principle, which takes advantage of two cooperative jamming methods to achieve a distribution of multiple false targets, is described. Finally, the influence of radar’s uncertain position on the two cooperative jamming methods is simulated and analyzed in detail. The simulation result shows that both jamming methods can effectively reduce the radar’s recognition rate, but there is a large difference when different interference modes are used by jammers. The obtained conclusion provides guidance for the practical application of cooperative jamming against pulse compression radar.
Highlights
In radar detection, the returned signals from radar targets are often buried in nonstationary noise, clutter, and interference
Considering the fact that there is a radar uncertain position in practice, we propose two cooperative jamming methods for pulse compression radar with a constant false alarm ratio (CFAR) detector
The contributions of the paper can be summarized as: (1) We propose two cooperative jamming methods for the pulse compression radar with a CFAR detector
Summary
The returned signals from radar targets are often buried in nonstationary noise, clutter, and interference. Specialized jamming methods against CFAR detectors were not proposed in [7] or [8] To solve this problem, a multiple-false-target jamming method against a linear frequency modulation (LFM) pulse compression radar with a mean level (ML) CFAR detector was proposed in [9, 10]. The number of false targets entering the reference window of the CFAR detector is greatly reduced when there are inaccuracies in the radar position. At this time, the significant disadvantage of jamming generated by a single jammer is revealed. Considering the fact that there is a radar uncertain position in practice, we propose two cooperative jamming methods for pulse compression radar with a CFAR detector. (1) We propose two cooperative jamming methods for the pulse compression radar with a CFAR detector.
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