机载气象雷达地杂波双阈值抑制方法

Q2 Physics and Astronomy

雷达学报 Pub Date : 2013-02-01 DOI:10.3724/SP.J.1300.2013.20057

Yanfei Han, R. Wu, Li Hai

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引用次数: 0

摘要

针对风切变模式下的机载气象雷达，提出了一种双阈值控制的自适应杂波抑制方法。为了可靠地估计杂波频谱的中心频率和带宽，利用各距离单元的回波功率设计了双阈值控制的自适应陷波滤波器。该滤波器能最大限度地抑制地杂波，同时减小地杂波残留对风切变信号的影响。仿真结果表明，该方法具有较好的杂波抑制性能，能有效提高风切变信号的风速估计精度。

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Ground Clutter Suppression with Dual-threshold Controlled Method for Airborne Weather Radar

In this paper, a new method of dual-threshold controlled adaptive clutter suppression is proposed for an airborne weather radar operated in the wind shear mode. To reliably estimate the center frequency and bandwidth of the clutter spectrum, the echo power in each range cell is used to design a dual-threshold controlled adaptive notch filter. This filter can reject the maximum amount of ground clutter, while reducing the effect of clutter residue on the wind shear signal. Results of our simulation have confirmed that this method has a superior clutter suppression performance, and can effectively improve the wind speed estimate accuracy of the wind shear signal.

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来源期刊

雷达学报 Physics and Astronomy-Instrumentation

CiteScore

4.10

自引率

0.00%

发文量

882

期刊介绍： Journal of Radars was founded in 2012 by the Institute of Space and Astronautical Information Innovation of the Chinese Academy of Sciences (formerly the Institute of Electronics) and the China Radar Industry Association (CRIA), which is located in the high-end academic journal and academic exchange platform in the field of radar, and is committed to promoting and leading the scientific and technological development in the field of radar. The journal can publish Chinese papers and English papers, and is now a bimonthly journal. Journal of Radars focuses on theory, originality and foresight, and its scope of coverage mainly includes: radar theory and system, radar signal and data processing technology, radar imaging technology, radar identification and application technology. Journal of Radars has been included in domestic core journals and foreign Scopus, Ei and other databases, and was selected as ‘China's high-quality science and technology journals’, and ranked the first in the category of electronic technology and communication technology in the ‘Chinese Core Journals List (2023 Edition)’.