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基于數(shù)字近景攝影測量的天線變形測量

Displacement measurement of antennas by means of digital close range photogrammetry

  • 摘要: 文章介紹了基于數(shù)字近景攝影測量原理的天線變形測量方法。該方法利用2臺CCD相機(jī)交會攝影來獲取被測面圖像，并對被測面上特殊標(biāo)志點進(jìn)行中心坐標(biāo)提取，然后利用光束法平差解算標(biāo)志點中心坐標(biāo)。測量精度可達(dá)到1︰50 000，可用于衛(wèi)星天線研制過程中空間環(huán)境模擬試驗的檢驗，為衛(wèi)星天線在軌正常工作提供可靠性保證。

     

    Abstract: This paper discusses the displacement measurement of antennas by means of digital close range photogrammetry. Two convergent CCD cameras are used to obtain pictures of the measured surfaces, the images’ central coordinates of special targets on the surfaces are deduced, and then the central coordinates of the targets are calculated by the bundle method. The accuracy may reach 1:20000, and the method can be applied in satellite antennas’ test under space simulation conditions before launch, to ensure antennas’ reliable work.

     

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