Abstract
The outboard corner reflectors are widely used as a countermeasure to radar tracking and detection. Therefore, it is essential to determine the composite time-domain scattering characteristics of the corner reflector and ship against the sea background and the jamming effectiveness of the corner reflector array. In this paper, the composite electromagnetic scattering characteristics of ship target, corner reflector, and the sea surface are studied based on the time-domain bouncing ray method (TDSBR). The radar echo and broadband radar cross section (RCS) results for the time domain pulse incident are also obtained and the high-resolution range profile (HRRP) is calculated. We then devise an evaluation system based on centroid jamming intensity and range profile similarity to determine the jamming characteristics of passive jamming. We further propose an array composing of three sizes of corner reflectors. Finally, the centroid jamming effectiveness is analyzed by comparing the RCS of the corner reflector array and the ship, and the deception jamming effectiveness is measured by calculating the range profile similarity based on the cosine similarity method and the range profile peak envelope overlap. Simulation results show that the reflector array can achieve a good performance both for centroid and range profile deception. The simulation results given and the evaluation method proposed in this paper provides significant practical insights into the design and analysis of the passive jamming systems.
Highlights
The corner reflector is a widely used passive jammer [1], [2], which is composed of several orthogonal metallic planes
The icosahedron triangular trihedral corner reflector (ITTCR) is shown in Fig. 3 [4], which is widely used in the navy because of stable reflection performance in all observation directions due to its central symmetric geometric structure
The radar echoes of the targets and jammers under the sea background are simulated by computer programming, and the time-domain echo results are obtained
Summary
The corner reflector is a widely used passive jammer [1], [2], which is composed of several orthogonal metallic planes. This geometric unit can be used to form a polyhedral corner reflector [3] (see, Fig. (b)). The icosahedron triangular trihedral corner reflector (ITTCR) is shown in Fig. 3 [4], which is widely used in the navy because of stable reflection performance in all observation directions due to its central symmetric geometric structure
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