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首页> 外文会议>Conference on Sensors, Systems, and Next-Generation Satellites VI Sep 23-26, 2002 Agia Pelagia, Crete, Greece >Vibration Induced Tilt Error Model for Aircraft Interferometer Data
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Vibration Induced Tilt Error Model for Aircraft Interferometer Data

机译：飞机干涉仪数据的振动引起的倾斜误差模型

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摘要

The Scanning High-resolution Interferometer Sounder (S-HIS) instrument is a cross track scanning Fourier-transform interferometer with 0.5 wavenumber resolution. It uses three detectors to cover the upwelling earth spectrum over the range from 3.3 to 17 microns. Vibration experienced during flight on aircraft platforms can cause a significant level of spectrally correlated noise in the calibrated spectra. To allow this interferometric noise to be removed by analysis, a wavefront tilt measurement system that monitors vibration induced optical tilts has been incorporated into the S-HIS instrument. This two-axis tilt measurement system records small changes in wavefront alignment during the data collection of both scene and blackbody interferograms. In general, both amplitude-modulation and sample-position errors can result from these tilts. Here we show that the modulation errors that dominate the interferometric noise in the S-HIS shortwave band can be significantly reduced by using the wavefront tilt measurements to model and remove the interferometric errors. The validation of our vibration induced tilt error model with blackbody data demonstrates a correction technique applicable to correcting all types of scene data.
机译：扫描高分辨率干涉仪测深仪（S-HIS）仪器是具有0.5波数分辨率的跨轨扫描傅里叶变换干涉仪。它使用三个检测器覆盖3.3至17微米范围内的上升流地球光谱。在飞机平台上飞行过程中经历的振动会在校准后的光谱中引起显着水平的光谱相关噪声。为了通过分析消除这种干涉式噪声，已将监视振动引起的光学倾斜的波前倾斜测量系统集成到S-HIS仪器中。这个两轴倾斜测量系统记录了场景和黑体干涉图的数据收集过程中波阵面对准的微小变化。通常，振幅和样本位置误差都可能由于这些倾斜而产生。在这里，我们表明，通过使用波前倾斜测量来建模和消除干涉误差，可以显着降低主导S-HIS短波波段干涉噪声的调制误差。用黑体数据对我们的振动引起的倾斜误差模型进行验证，证明了一种可用于校正所有类型场景数据的校正技术。

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