P07521: Bi-Directional Reflectance Distribution Function (BRDF) Imaging Platform Dr. Marcos Esterman Faculty Guide W. Casolara Project Leader M. Harris Lead Engineer K. Berens Mechanical Engineer R. Andol Mechanical Engineer R. Strebig Mechanical Engineer R. Jaromin Electrical Engineer Sponsor: Chester F. Carlson Center for Imaging Science KGCOE Multidisciplinary Sr. Design R•I•T

P07521: Project Description The mission of this student team is to develop a fully autonomous imaging platform for deployment on a range of vehicles, capable of imaging across a complete hemispherical field of view to measure a target's BRDF. Initial deployment vehicles include full-scale aircraft and ground based vehicles, while future vehicle platforms may include lighter-than-air vehicles and unmanned aerial vehicles. will KGCOE Multidisciplinary Sr. Design R•I•T

P07521: High Level Needs Instantaneously look at an object from all possible vantage points before the sun moves Come up with the shapes of the Bi-directional Reflectance Distribution Functions (BRDF) of natural targets outside on a clear day 50-70 degree angle from horizontal on target Log GPS coordinates with each picture taken Time stamp on pictures to know when it was taken Keep the system nearly level while imaging Robust enough to prevent damage of equipment Onboard power will KGCOE Multidisciplinary Sr. Design R•I•T

P07521: Design Concept Dampened Stabilization System Batteries PC 104 Computer Matt GPS Unit Camera Mount and Motor Polycarbonate Dome KGCOE Multidisciplinary Sr. Design R•I•T

P07521: Key Assumptions Flying in Visual Flight Rules (VFR) conditions Clear day, 1,000 ft ceiling Winds <15 kts Racetrack flight path to be set up by user Path over target for which the platform will take data Camera hanging vertical as result of passive stabilization Not completely accurate, need to sense pitch/yaw rate Matt KGCOE Multidisciplinary Sr. Design R•I•T

P07521: Technical Risk Assessment Risk: Sensing Orientation of Aircraft for Post Processing Adjustment Passive stabilization system susceptible to misalignment due to G force Throws off angle calculations Need assumption of camera hanging vertical Reviewed possible solutions with project team Proposed Mitigation: Stochastic Sensor Log orientation of plane through pitch/yaw rates Data corrected in post processing Rick KGCOE Multidisciplinary Sr. Design R•I•T

P07521: Technical Risk Assessment Risk: Write speed of Compact Flash card 5º Angular resolution requires 5 pictures per second in certain situations Requires significant amount of computing power to process PC104 Board needs to write to memory quickly enough to process next picture Proposed Mitigation: Verify write speed once Compact Flash card is selected Test system in lab to verify picture acquisition rate Keep hard drive option available Bob KGCOE Multidisciplinary Sr. Design R•I•T

P07521: Product Development Process Phase Phase 0: Planning Phase 1: Concept Development Phase 2: System Level Design Phase 3: Detailed Design Phase 4: Testing and Refinement Ross MSD I MSD II Working Model 1 2 3 4 Current Phase of Development KGCOE Multidisciplinary Sr. Design R•I•T

P07521: Current State of Design Design meets all customer needs Design meets engineering specifications for full system and subsystems except: 2 cm over Pico-Satellite dimensions (10x10x12) Optical dome size Bill of Materials complete, used $981 of $1000 available in budget Mitigations: Crab angle adjustments will be made in post-processing, not actively Flight plan details to be worked out in SDII Kate KGCOE Multidisciplinary Sr. Design R•I•T

P08907: MSD II Project Schedule Milestones Mar 09: All parts on order Mar 23: Review of final design based on feedback and manufacturing specs Apr 06: Prototype built and ready for testing Apr 13: Performance Testing Vibration Vehicular May 04: Functional review: Design Verification Testing Results May 11: Documentation Finalized: DHF, Formal Paper, Poster May 18: Project Review - Phase 4 Completion Kate KGCOE Multidisciplinary Sr. Design R•I•T

Questions? KGCOE Multidisciplinary Sr. Design R•I•T