Huang Feng-zhen, Yuan Yan, Zhang Xiu-bao, Wang Qian, Zhou Zhi-liang
Key Laboratory of Precision Opto-Mechatronics Technology, Ministry of Education, Beihang University, Beijing, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2011 Jul;31(7):2011-4.
Phase correction is one of the key technologies in the spectrum recovery of the Fourier transform imaging spectrometer. The present paper proposes a correction method based on simulated annealing algorithm to calculate phase error, which overcomes the disadvantage of the existing methods that can not correct the interferogram with noise. The method determines the phase optimum solution by controlling the phase decrease function, attaining objective function value by correcting interferogram data with random phase value generated in the phase range, and determining the objective function increment in accordance with the Metropolis criterion. The simulation result of the algorithm indicates that the optimized phase error is less than 0.5%, and both the error accuracy and stability of the spectrum-recovered relative spectrum is less than 1%, which is a great improvement compared with the existing algorithm.
相位校正是傅里叶变换成像光谱仪光谱恢复中的关键技术之一。本文提出了一种基于模拟退火算法的相位误差计算校正方法，克服了现有方法无法对含噪声干涉图进行校正的缺点。该方法通过控制相位递减函数确定相位最优解，利用在相位范围内生成的随机相位值校正干涉图数据获得目标函数值，并根据Metropolis准则确定目标函数增量。算法仿真结果表明，优化后的相位误差小于0.5%，光谱恢复相对光谱的误差精度和稳定性均小于1%，与现有算法相比有很大改进。
