本文關(guān)鍵詞：自校準(zhǔn)型光譜輻亮度標(biāo)準(zhǔn)光源　出處：《光學(xué)精密工程》2017年08期 　論文類(lèi)型：期刊論文

  更多相關(guān)文章： 輻射度學(xué) 光學(xué)遙感 輻射定標(biāo) 光源 數(shù)字微鏡器件(DMD)

【摘要】：針對(duì)高精度空間光學(xué)定量遙感的需求,研制了一種采用數(shù)字微鏡器件的自校準(zhǔn)型光譜輻亮度標(biāo)準(zhǔn)光源。該光源具有兩種工作模式:在窄帶工作模式下,由Gershun管輻射計(jì)和CAS光譜輻射計(jì)自校準(zhǔn);在寬帶工作模式下,作為光譜輻亮度標(biāo)準(zhǔn)光源用于地面或空間遙感儀器的光譜輻亮度響應(yīng)度定標(biāo)。以光譜輻照度標(biāo)準(zhǔn)光源和Spectralon標(biāo)準(zhǔn)漫反射板組成光譜輻亮度標(biāo)準(zhǔn)光源為CAS光譜輻射計(jì)定標(biāo),測(cè)得自校準(zhǔn)光源的光譜輻亮度。又以標(biāo)準(zhǔn)探測(cè)器定標(biāo)的Gershun管輻射計(jì)測(cè)量自校準(zhǔn)光源,采用迭代法得到自校準(zhǔn)光源的光譜輻亮度。窄帶模式下兩種不同定標(biāo)方法對(duì)自校準(zhǔn)光源的光譜輻亮度測(cè)量結(jié)果在測(cè)量不確定度允許范圍內(nèi)一致。不確定度分析顯示:基于標(biāo)準(zhǔn)光源和基于標(biāo)準(zhǔn)探測(cè)器的自校準(zhǔn)光源光譜輻亮度測(cè)量不確定度分別為1.41%~2.09%和1.28%~1.61%。實(shí)驗(yàn)及不確定度分析結(jié)果表明,該光源可以滿(mǎn)足高精度空間光學(xué)定量遙感的使用要求。
[Abstract]:Aiming at the demand of high precision spatial optical quantitative remote sensing, a self-calibrated spectral radiance standard light source with digital micromirror device is developed. The light source has two working modes: narrow band working mode. Self-calibrated by Gershun tube radiometer and CAS spectrometer; In broadband mode. Spectral radiance responsivity calibration used as spectral radiance standard light source for ground or space remote sensing instruments. spectral radiance standard consisting of spectral irradiance standard light source and Spectralon standard diffuse reflectance plate. The light source is calibrated by CAS spectral radiometer. The spectral radiance of the self-calibrated light source was measured, and the self-calibrated light source was measured by the standard detector calibrated Gershun tube radiometer. The spectral radiance of self-calibrated light source is obtained by iterative method. The results of spectral radiance measurement of self-calibrated light source by two different calibration methods in narrow band mode are consistent in the allowable range of measurement uncertainty. Show:. The uncertainty of spectral radiance measurement of self-calibrated light source based on standard light source and standard detector is 1.41% and 1.281.61% respectively. Ming. The light source can meet the requirements of high precision space optical quantitative remote sensing.
【作者單位】： 中國(guó)科學(xué)院長(zhǎng)春光學(xué)精密機(jī)械與物理研究所;中國(guó)科學(xué)院大學(xué);
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(No.61378063)
【分類(lèi)號(hào)】：O432
【正文快照】： 2.中國(guó)科學(xué)院大學(xué),北京100049)1引言目前,國(guó)際上光學(xué)遙感儀器在紫外至短波紅外光譜波段的光譜輻亮度響應(yīng)度定標(biāo)主要有兩種方法:一種是寬帶光源法。該方法通常采用燈照積分球光源或光譜輻照度標(biāo)準(zhǔn)燈輻照漫反射板光源,積分球的光譜輻亮度或光譜輻照度標(biāo)準(zhǔn)燈的光譜輻照度由高溫黑

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