Measurement and Modeling of Fugitive Dust from off-Road Dod Activities
Engineering and Wind Erosion Research Unit
2013 Annual Report
1a.Objectives (from AD-416):
To develop lidar instrumentation to measure fence-line concentrations from large area emission sources produced by military activities on DoD installations.
1b.Approach (from AD-416):
The objective will be achieved through a comprehensive set of tasks that are designed to measure incoming and outgoing PM at the installation fence-line.
This research project is to address Department of Defense concerns about air quality impacts both on and off their installations due to off-road military trafficking during training exercises. Tasks accomplished relate primarily to the design and development of CELiS (Compact Eye-safe Lidar System), which is to be used for fence-line monitoring of regulated particulate matter suspended in the atmosphere. This system will allow the military to determine if their off-road trafficking activities are negatively impacting air quality near the installation. The principle parameters for CELiS have been determined for fence-line monitoring activities. Off-the-shelf possible solutions have been evaluated and all were rejected for a variety of reasons. The basic design of CELiS has been completed. Currently, the Space Dynamics Laboratory is in the process of procuring components to build a prototype for testing.
This reporting period has emphasized the procurement and fabrication of the CELiS demonstration unit. The first few months of this period of performance were spent on finalizing the mechanical, optical, and electrical design. Appropriate engineering drawings have been completed. The remaining time has been used to fabricate the lidar system itself. Specific activities associated with this task are procurement and inspection of COTS (commercial off the shelf) parts and also machining of custom parts. Specific attention was paid to the design of the detector optics. Design and fabrication of a custom aspheric meniscus lens was required to ensure adequate performance of the system.