本文選題：大氣光學(xué) + 被動(dòng)測距　； 參考：《光學(xué)學(xué)報(bào)》2017年10期

【摘要】：為消除測距光譜通道位置和數(shù)量選取對(duì)氧氣吸收衰減被動(dòng)測距技術(shù)測距精度的影響,基于氧氣吸收衰減被動(dòng)測距技術(shù)的基本原理,分析氧氣A、B吸收帶光譜譜線特性。對(duì)于吸收帶帶肩上的光譜通道,利用蒙特卡羅法,以擬合非吸收基線與理想基線的誤差平方和與相關(guān)度為指標(biāo),分析光譜通道位置和數(shù)量及擬合多項(xiàng)式級(jí)次對(duì)非吸收基線擬合精度的影響。對(duì)于吸收帶帶內(nèi)光譜通道,分析不同光譜通道處吸收率大小對(duì)測距距離和測距精度的影響。結(jié)果表明:在綜合考慮系統(tǒng)實(shí)時(shí)性和測距精度要求的情況下,A吸收帶兩帶肩上光譜通道各為1個(gè),B吸收帶單帶肩上光譜通道為2個(gè),位置均宜選擇在各帶肩靠近吸收帶一端;吸收帶內(nèi)光譜通道可根據(jù)測距任務(wù)中對(duì)測程和測距精度的要求靈活選擇其數(shù)量和位置。因此,在無法一次性獲取測距波段完整光譜曲線的情況下,單目多光譜被動(dòng)測距系統(tǒng)采用較少的光譜通道和最簡單的直線擬合方法,不僅可以保證系統(tǒng)的測距精度,而且能夠減少濾波片更替和軟件計(jì)算的時(shí)間周期,進(jìn)而增強(qiáng)系統(tǒng)數(shù)據(jù)采集和解算的實(shí)時(shí)性。
[Abstract]:In order to eliminate the influence of location and quantity of range spectrum channel on the accuracy of oxygen absorption attenuation passive ranging, based on the basic principle of oxygen absorption attenuation passive ranging, the spectral line characteristics of oxygen absorption band are analyzed. For the spectral channel on the shoulder of the absorption band, the Monte Carlo method is used to fit the sum of square error and the correlation between the non-absorption baseline and the ideal baseline. The influence of the position and number of spectral channels and the degree of fitting polynomial on the fitting accuracy of non-absorption baselines is analyzed. For the absorption band spectrum channel, the influence of absorptivity at different spectral channels on ranging distance and ranging accuracy is analyzed. The results show that under the condition of considering the requirement of system real-time and ranging precision, the two shoulder-shoulder spectrum channels of A A absorption band are one B absorption band and the single shoulder spectrum channel with single band is 2, and the position should be chosen at each shoulder near one end of the absorption band. The number and position of absorption band spectrum channel can be chosen flexibly according to the requirement of range and ranging accuracy in ranging task. Therefore, under the condition that the complete spectral curve of ranging band can not be obtained in one time, the passive ranging system of monocular multi-spectrum uses fewer spectral channels and the simplest straight line fitting method, which can not only ensure the ranging accuracy of the system. Moreover, it can reduce the time cycle of filter chip replacement and software calculation, and then enhance the real-time performance of system data acquisition and computation.
【作者單位】： 裝甲兵工程學(xué)院控制工程系;中國人民解放軍66011部隊(duì);中國人民解放軍66061部隊(duì);
【基金】：院校創(chuàng)新基金(2016CJ10)
【分類號(hào)】：TP391.41
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本文編號(hào)：1862296