Modeling and simulation of ionospheric range equation for high frequency surface radar

Abstract

Abstract: The distributed radar range equations of volume target and surface target are established, according to the unique distribution characteristics of ionosphere, and the scattering coefficient of the ionospheric RCS is estimated based on the principle of high frequency coherent scattering for irregularities. Thus, the generalized radar formula based on the physical mechanism of the ionosphere is derived, quantizing the impact of ionospheric characteristic parameters on HF radar system. Simulation results show that the near-vertical ionospheric echo conforms to the pulse-limited model, and the oblique ionospheric echo conforms to the beam-limited model, for the case of surface scattering with wide beam in HF surface wave radar. For volume scattering, the most important factor affecting the ionospheric clutter intensity is the amplitude of irregularities fluctuation.

Key words: HF surface wave radar, ionosphere, radar range equation, surface scattering, volume scattering

CLC Number:

TN958.93

YANG Yong-feng, YANG Xu-guang, SHANG Shang, YU Chang-jun. Modeling and simulation of ionospheric range equation for high frequency surface radar[J]. Journal of Lanzhou University of Technology, 2021, 47(4): 99-105.

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