CAJ | 학술논문

为了提高外场实验中远距离测量激光光斑位置的精度，提出利用盲解卷积技术对光斑图像进行事后复原来削弱大气湍流对光斑成像的影响。首先，介绍了经典盲解卷积算法，分析了其不足之处，并提出了一种改进的盲解卷积算法。为了提高目标函数的收敛性和收敛速度，在TV（Total Variation）目标函数加入惩罚项，并对交替迭代法进行改进。然后，用数学方法证明了改进的盲解卷积算法的收敛性。最后，进行了仿真实验。与传统算法相比，用改进算法恢复的图像信噪比至少提升了15％。文中给出了外场试验图像的实际复原效果。
위료제고외장실험중원거리측량격광광반위치적정도，제출이용맹해권적기술대광반도상진행사후복원래삭약대기단류대광반성상적영향。수선，개소료경전맹해권적산법，분석료기불족지처，병제출료일충개진적맹해권적산법。위료제고목표함수적수렴성화수렴속도，재TV（Total Variation）목표함수가입징벌항，병대교체질대법진행개진。연후，용수학방법증명료개진적맹해권적산법적수렴성。최후，진행료방진실험。여전통산법상비，용개진산법회복적도상신조비지소제승료15％。문중급출료외장시험도상적실제복원효과。
To improve the precision of long-ranged laser spot position measurement in an outdoor experiment , blind deconvolution technology was proposed to restore the spot image afterwards to lower the impact of atmos -pheric turbulence on spot imaging .First, classical blind deconvolution algorithms were introduced , of which the shortage is analyzed .Second , an improved blind deconvolution algorithm was designed .The penalty terms were added to TV(Total Variation)objective function and the alternative iterative method was also redesigned . Then, the convergence of the improved method was testified mathematically .Finally, the improved method was compared with other classical methods by experimental simulation .The capability of improved method was testified with several objective figures , and the results show that the Signal to Noise Ratio ( SNR) is improved by 15%at least.The restoration result of outdoor experiment proves that the improved method is effective .