基于被動(dòng)干涉微波亮溫圖像的海面目標(biāo)探測(cè)算法研究
doi: 10.11999/JEIT190256 cstr: 32379.14.JEIT190256
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1.
中國空間技術(shù)研究院西安分院 西安 710100
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2.
北京跟蹤與通信技術(shù)研究所 北京 100094
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3.
南京理工大學(xué)電子工程與光電技術(shù)學(xué)院 南京 210094
Research on the Detection Algorithm for Sea Surface Targets Based on Passive Interferometric Microwave Images
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1.
China Academy of Space Technology (Xi’an), Xi’an 710100, China
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2.
Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China
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3.
School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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摘要:
為利用被動(dòng)干涉微波技術(shù)作為我國天基預(yù)警體系的重要補(bǔ)充以實(shí)現(xiàn)對(duì)海面目標(biāo)的有效探測(cè),該文提出一種基于被動(dòng)干涉微波圖像的海面目標(biāo)探測(cè)算法。首先,建立了海面背景和海面目標(biāo)的被動(dòng)干涉微波圖像數(shù)學(xué)模型;其次,詳細(xì)地介紹了海面目標(biāo)的探測(cè)算法,并仿真驗(yàn)證了算法的可行性;最后,開展了機(jī)載實(shí)驗(yàn)。理論分析和實(shí)驗(yàn)驗(yàn)證均表明:該探測(cè)算法是可行性的,能有效地探測(cè)到海面目標(biāo),且具有較好的探測(cè)性能;海面航行的金屬目標(biāo)在被動(dòng)干涉微波圖像中呈現(xiàn)“一高一低”的特征,可利用該特征提高海面目標(biāo)探測(cè)概率。該探測(cè)算法可為天基被動(dòng)干涉微波技術(shù)探測(cè)海面目標(biāo)提供參考。
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關(guān)鍵詞:
- 海面目標(biāo)探測(cè) /
- 微波圖像 /
- 被動(dòng)干涉
Abstract:To effectively detect sea surface targets by the passive interferometric microwave technology considered as an important complement for the space-based early warning system of China, a detection algorithm is proposed based on the Passive Interferometric Microwave Images (PIMI). First, the mathematical model of PIMI is established for the sea background and sea surface target. Second, the detection algorithm is introduced in detail, and numerical simulations are performed to demonstrate the feasibility of the proposed algorithm. Finally, the air-borne experiments are also carried out. Both theoretical and experimental results demonstrate that the proposed algorithm is feasible, can effectively detect sea surface targets, and show good performance. That also exhibits that the moving metal vessels on the sea surface show a “hot” and “l(fā)ow” characteristic in PIMI, which can be used to improve the detection probability. The proposed detection algorithm can provide a reference for space-based PIMI to detect sea surface targets.
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Key words:
- Sea surface target detection /
- Microwave image /
- Passive interferometric
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