星载双基地雷达杂波建模及特性分析

doi:10.12305/j.issn.1001-506X.2023.04.11

Abstract

Abstract:

Spaceborne bistatic radar has greater advantages such as enhancing radar cross section of stealth target. The clutter distribution of spaceborne bistatic radar is more complex than that of the spaceborne radar. In order to solve the problem of spaceborne bistatic radar clutter, two coordinate systems are established. Both are based on the earth model, and one takes the center of the earth as the origin, and the other is based on the midpoint of the line between two satellites as the origin. The geometric model of the spaceborne bistatic radar is established by using the corresponding ellipsoid equation and parameter equation and the clutter Doppler frequency construction method based on the constructed spaceborne bistatic radar model is proposed. Finally, the influence of operating frequency on Doppler frequency is analyzed. Compared with the existing models, the proposed model simplifies the operation process, requires less known parameter information and can be applied to more bistatic/multistatic scenarios. Meanwhile, the simulation result shows that the larger the value of the isometric contour or the larger the value of operating frequency, the more serious the clutter broadening becomes.

Key words: spaceborne bistatic radar, clutter, coordinate conversion, Doppler frequency, signal frequency

CLC Number:

TN911.7

Mengyu NI, Hui CHEN, Xiaoge WANG, Yang CHENG, Binbin LI. Clutter modeling and characteristic analysis of spaceborne bistatic radar[J]. Systems Engineering and Electronics, 2023, 45(4): 1024-1031.

Figures/Tables 6

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Clutter modeling and characteristic analysis of spaceborne bistatic radar

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