本文關(guān)鍵詞： 雷達(dá)信號(hào) 目標(biāo)起伏 雷達(dá)散射截面 機(jī)動(dòng)目標(biāo)探測(cè)　出處：《計(jì)算機(jī)仿真》2017年08期 　論文類型：期刊論文

【摘要】：雷達(dá)信號(hào)是探測(cè)和跟蹤運(yùn)動(dòng)目標(biāo)的重要依據(jù),如何準(zhǔn)確快速獲取雷達(dá)信號(hào)已成為現(xiàn)代雷達(dá)亟需解決的技術(shù)難題。為研究目標(biāo)信號(hào)RCS起伏特性對(duì)雷達(dá)探測(cè)的影響,針對(duì)典型起伏目標(biāo),運(yùn)用準(zhǔn)靜態(tài)法獲取了目標(biāo)隨姿態(tài)角起伏的RCS序列,建立目標(biāo)機(jī)動(dòng)航跡,基于靜態(tài)數(shù)據(jù)庫(kù)提取目標(biāo)機(jī)動(dòng)RCS序列,利用起伏因子構(gòu)建相應(yīng)機(jī)動(dòng)目標(biāo)RCS起伏統(tǒng)計(jì)模型。最后,依據(jù)雷達(dá)回波信號(hào)與目標(biāo)RCS的關(guān)系建立檢測(cè)模型,研究了一定虛警概率下探測(cè)概率,信噪比和起伏因子之間的關(guān)系。結(jié)果顯示,在一定信噪比范圍內(nèi),發(fā)現(xiàn)概率與起伏因子成明顯的正比關(guān)系,可為利用目標(biāo)起伏性準(zhǔn)確獲取雷達(dá)信號(hào),以提高探測(cè)概率和精確跟蹤。
[Abstract]:Radar signal is an important basis for detecting and tracking moving target. How to acquire radar signal accurately and quickly has become a technical problem that needs to be solved in modern radar. In order to study the influence of target signal RCS fluctuation characteristics on radar detection, it is necessary to solve this problem. For typical undulating targets, the quasi-static method is used to obtain the RCS sequence with attitude angle fluctuation, the maneuvering track of the target is established, and the maneuvering RCS sequence of the target is extracted based on the static database. The statistical model of RCS fluctuation of maneuvering target is constructed by using the fluctuation factor. Finally, the detection model is established according to the relationship between radar echo signal and target RCS, and the detection probability under a certain false alarm probability is studied. The results show that in a certain range of signal-to-noise ratio (SNR), the probability is directly proportional to the fluctuation factor, and the radar signal can be obtained accurately by using the fluctuation of the target. To improve detection probability and accurate tracking.
【作者單位】： 空軍工程大學(xué)防空反導(dǎo)學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51372033)
【分類號(hào)】：TN957.51

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本文編號(hào)：1522069