Analysis of X-band RCS statistical characteristics of ship body in motion state

DU Xiaojia; LI Peng; NI Jiazheng; YAN Hongzhou; SHI Feifei

doi:10.19693/j.issn.1673-3185.02369

Volume 18 Issue 1

Feb. 2023

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Chinese Journal of Ship Research > 2023 > 18(1): 163-169. > DOI: 10.19693/j.issn.1673-3185.02369 CSTR: 32390.14.j.issn.1673-3185.02369

DU X J, LI P, NI J Z, et al. Analysis of X-band RCS statistical characteristics of ship body in motion state[J]. Chinese Journal of Ship Research, 2023, 18(1): 163–169. DOI: 10.19693/j.issn.1673-3185.02369

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Analysis of X-band RCS statistical characteristics of ship body in motion state

1.
China Ship Development and Design Center, Wuhan 430064, China
2.
Naval Research Academy, Beijing 100161, China

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Received Date: May 05, 2021
Revised Date: October 14, 2021
Available Online: October 17, 2021

This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Abstract

Objective In order to clarify the interference of ship movement on the radar cross section (RCS) measurement statistics of a real ship, the statistical characteristics of ship body X-band RCS under various motion states are analyzed.
Methods A dynamic RCS simulation method of a ship body under low sea state motion is established, and a unified model of hydrodynamic simulation and electromagnetic scattering is created on the basis of the DTMB 5415 benchmark surface ship model. The dynamic RCS data of ships detected by X-band radar at a horizontal incident angle are obtained, and the influence boundaries and rules of statistical time, sea state, speed and sea wave direction on the statistical features of RCS are analyzed.
Results The results show that the statistical characteristics of the dynamic RCS of a ship body are different from those in a static state. The influence range of the general values of RCS under low sea state, speed and wave angle is within 0.9 dB. The RCS of a ship's characteristic direction is sensitive to changes in the sea wave direction angle, and decreases gradually with the increase of the sea state.
Conclusions The results of this study can provide references for better understanding the interference of ship motion on the statistical characteristics of RCS measurement, and support the selection of real ship RCS measurement conditions.
- warship,
- wave disturbance,
- radar cross section (RCS),
- standard ship model

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