Study on the Discriminability Between Ships and Corner Reflector Arrays Based on Dual-Radar HRRP Similarity

doi:10.3969/j.issn.1009-086x.2026.03.001

Abstract

Abstract:

Corner reflector arrays can generate high resolution range profiles （HRRPs） similar to those of ship targets， posing significant challenges to existing radar recognition systems. However， the variation patterns of HRRPs for corner reflector arrays and ship targets differ with observation angles. Leveraging this distinction， this paper proposes a dual-radar HRRP similarity feature to discriminate between corner reflector arrays and ship targets. Electromagnetic simulation results demonstrate that this feature effectively captures the differences in HRRP stability under varying viewing angles for the two target types. When the line-of-sight angle between two radars exceeds 60°and the signal-to-clutter ratio （SCR） is -2 dB， the recognition accuracy for distinguishing corner reflector arrays from ships reaches 99.07% using the dual-radar HRRP similarity feature.

Key words: cooperation detection, high resolution range profiles（HRRP） similarity, ships, corner reflectors, target recognition

摘要：

角反阵列能形成与舰船目标相似的高分辨一维距离像（high resolution range profile, HRRP），给现有雷达识别提出了严峻挑战，但角反阵列和舰船目标随着观测角度变化的规律有差异，据此提出了双雷达HRRP相似度特征，用于鉴别角反阵列和舰船目标。电磁仿真结果表明，该特征有效刻画了角反阵列和舰船目标HRRP随视角变化的稳定性差异，在双雷达视线夹角大于60°和-2 dB信杂比条件下，基于双雷达HRRP相似度特征的角反阵列和舰船目标识别正确率可以达到99.07%。

关键词: 协同探测, HRRP相似度, 舰船, 角反, 识别

CLC Number:

TN955

Xiaofeng AI, Yihang HU, Li GONG. Study on the Discriminability Between Ships and Corner Reflector Arrays Based on Dual-Radar HRRP Similarity[J]. Modern Defense Technology, 2026, 54(3): 1-10.

艾小锋, 胡旖航, 龚力. 基于双雷达HRRP相似度的舰船和角反阵列可分性研究[J]. 现代防御技术, 2026, 54(3): 1-10.

Figures/Tables 20

Fig. 1 Schematic diagram of ship model and observation angle definitions

Table1 Electromagnetic simulation parameters for ship models

参数	取值
频段	9.9~10.1 GHz（带宽200 MHz，间隔0.8 MHz）
观测俯仰角	45°~90°（间隔1°）
观测方位角	0~180°（间隔1°）
极化方式	HH极化
材料	PEC

Fig. 2 Single icosahedral vertex corner reflector

Fig. 3 Hexagonal corner reflector arrays

Fig. 4 HRRP for a ship with noise (elevation 45°, azimuth 0°)

Fig. 5 HRRP for corner reflector arrays with noise (elevation 45°, azimuth 0°)

Fig. 6 Cosine similarity between ships and corner reflector arrays at different viewing angles(elevation 45°, azimuth 0°)

Fig. 7 Cosine similarity between ships and corner reflector arrays at different viewing angles(elevation 75°, azimuth 37°)

Fig. 8 Cosine similarity between ships and corner reflector arrays at different viewing angles (elevation 60°, azimuth 150°)

Fig. 9 Manhattan distance between ships and corner reflector arrays at different viewing angles (elevation 45°, azimuth 0°)

Fig. 10 Manhattan distance between ships and corner reflector arrays at different viewing angles (elevation 75°, azimuth 37°)

Fig. 11 Manhattan distance between ships and corner reflector arrays at different viewing angles (elevation 16°, azimuth 150°)

Fig. 12 Cosine similarity discriminability of ship and

Fig. 13 Cosine similarity discriminability of ship and corner reflector arrays (elevation 75°，azimuth 37°)

Fig. 14 Cosine similarity discriminability of ship and

Fig. 15 Manhattan distance discriminability of ship and corner reflector arrays (elevation 45°, azimuth 0°)

Fig. 16 Manhattan distance discriminability of ship and corner reflector arrays (elevation 75°， azimuth 37°)

Fig. 17 Manhattan distance discriminability of ship and corner reflector arrays (elevation 60°， azimuth 150°)

Fig. 18 SVM recognition process

Fig. 19 Target recognition accuracy of similarity features at different angles

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