散射中心屬性對單脈沖雷達(dá)測角的影響研究

郭琨毅; 牛童瑤; 盛新慶

doi:10.11999/JEIT161223

散射中心屬性對單脈沖雷達(dá)測角的影響研究

doi: 10.11999/JEIT161223

基金項(xiàng)目:

國家自然科學(xué)基金(61471041, 61671059)

計(jì)量
- 文章訪問數(shù): 1287
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2016-11-10
- 修回日期: 2017-04-06
- 刊出日期: 2017-09-19

Influence of Multiple Scattering Centers with Various Attributes on Radar Angular Measurements

Funds:

The National Natural Science Foundation of China (61471041, 61671059)

摘要

摘要: 角閃爍是末制導(dǎo)階段角跟蹤誤差的主要來源，如果對角閃爍處理不當(dāng)會增大雷達(dá)跟蹤目標(biāo)的誤差, 甚至丟失目標(biāo)。通過脈沖壓縮獲得高分辨距離像是抑制角閃爍的一種有效方法，但仍不能完全消除測角誤差。研究發(fā)現(xiàn)高分辨成像對角閃爍的抑制效果與散射中心類型以及其方位特性相關(guān)。該文從理論上分析了局部型、分布型、滑動(dòng)型等不同的散射中心類型對角跟蹤產(chǎn)生的影響，然后通過全波法電磁計(jì)算結(jié)果驗(yàn)證理論分析結(jié)論。該文研究結(jié)論對于抑制角閃爍、改善和提高雷達(dá)跟蹤目標(biāo)的性能具有參考價(jià)值。
- 雷達(dá)測角 /
- 角閃爍 /
- 散射中心類型
Abstract: Angular glints are the main error sources for radar angular measurement in the terminal guidance, which may result larger tracking error or even lead to losses of the tracking if mishandled. Although the angle glint can be suppressed to some extent through Higher Range Resolution Profile (HRRP) processing, the tracking errors due to multiple scattering centers can not be thoroughly eliminated. It is found in this paper that the tracking errors are closely related with the attributes of scattering centers. The influence on angular measurements induced by scattering centers with various attributes is investigated theoretically and numerically in this paper. For high reliability of numerical results, the scattering responses of extended targets are simulated by the scattered fields computed by the full-wave numerical method in this paper. The reached conclusion of this paper can provide a theoretical reference for the techniques in order to improve the tracing accuracy of extended targets with multiple scattering centers.
- Radar angular measurements /
- Angular glint /
- Types of scattering centers

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