The onboard long-wave infrared airglow imaging interferometer can realize the remote sensing observation of atmospheric wind information in the stratospheric region in near-space. However, long wave infrared is more sensitive to temperature and thus more sources of error to the interferometer are introduced. In view of this, referring to the design parametersoftheSWIFTinstrument, basedontheforwardmodelingsimulationofthelimbobservation, thephasethermal driftresearchofkeycomponentsandthethermalinstabilityanalysisofbackgroundradiation arecarriedout, andthewind fielderrorcausedbythetemperaturechangeoftheinstrumentisgiven, andaschemetoreducethewindmeasurementerror bymonitoringthephaseofopticalpathdifferencethroughcalibrationcellisproposed.Uncertaintyanalysisshowsthatifthe temperature change rate of the key components of the SWIFT instrument is controlled at 10-3 K/s, the wind measurement errorsoftheMichelsoninterferometer andtheF-Pfiltercausedbythermaldrift are37m/sand20m/s, respectively.When the calibration cell can monitor the optical path difference phase with an accuracy of 10-3 radians, the error caused by thermaldrift canbereduced tolessthan1m/s.Thisresearchwillprovideimportanttheoreticalguidanceforthedesignand developmentofonboardalldaynear-spacelong-waveinfraredwindinterferometer.