摘要
Therandomphaseerrorsoftheopticalcarriersarediscussedandcontrolledforpassivemillimeter-wavesparseaperture(PMMWSA)upconversionimaging.Atwo-channelmodelissetupforanalyzingcharacteristicsofthephaseerrors,andanactiveopticalcontroltechniquebasedonstochasticparallelgradientdecentalgorithm(SPGDcontroller)isproposedtocalibratethephaseerrors.TodemonstratethefeasibilityoftheSPGDcontroller,simulationsareperformedandanexperimentalsystemwithatwo-channelfiberarrayissetup.SimulationandexperimentresultsshowthattheSPGDcontrollercaneffectivelyandrapidlycompensatethephaseerrorsoftheopticalcarrier,andtheaccuracyofthephasecontrolissufficientforimagingsystems.
出版日期
2014年05月15日(中国期刊网平台首次上网日期,不代表论文的发表时间)