Presidential Faculty Fellow Award: Development of a Computer Tomographic/Remote Sensing Method for Characterizing the Concentration and Dispersion of Air Pollutants

9353433托德，这项研究的目的是开发一种新的方法，用于确定和可视化空气中气体和蒸气的浓度和流动。该方法是基于光学遥感的化学探测技术和计算机层析成像的测绘能力相结合的。通过以多个角度通过空气投射的红外线光束网络确定的化学浓度，与通过使用光学遥感系统获得的实时测量相结合，以获得光束整个路径上的化学物质的路径综合浓度。这项研究的初始阶段涉及用于重建空气中化学浓度的层析重建算法和图像处理技术的修改和评估。为评估算法性能和图像质量而开发的特定应用措施之后，将进行模拟研究，以确定该方法的实验室验证条件。这一研究结果有望应用于识别和表征大气污染物从源头排放后的运动和扩散。这是一项奖励的初步增加，以支持这位总统研究员，他是通过国家科学基金会进行的评估程序并根据包含提名指南的NSF 93-114中的标准选出的。***

9353433 Todd The objective of this research is to develop a new method for determination and visualization of the concentration and flow of gases and vapors in air. The method is based on coupling the chemical detection technology of optical remote sensing with the mapping capabilities of computed tomography. Chemical concentrations determined by using a network of infrared beams projected through air at many angles are coupled with real-time measurements obtained through use of an optical remote sensing system to obtain path-integrated concentrations of chemicals over the entire path of the beam. The initial phases of this research involve modification and evaluation of tomographic reconstruction algorithms and image processing techniques for reconstructing chemical concentrations in air. Application-specific measures developed to evaluate algorithm performance and image quality will be followed by simulation studies to determine conditions for laboratory validation of the method. Results of this research are expected to be applied to identification and characterization of the motion and dispersion of air pollutants after their emission from sources. This is the initial increment of an award to provide support for this Presidential Faculty Fellow who was selected through evaluation procedures conducted by the National Science Foundation and based on criteria contained in NSF 93-114 which contains the nomination guidelines. ***