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ElectroOptic Sensors

ElectroOptic Sensors. Matt McKeever Jonathan Baker UAV Design Team 10/26/2006. http://idahohelicopters.com/images/flir/kelvin275gimbal.jpg. http://www.imaging1.com/images/j1022-18.jpg. Surveillance & Reconnaissance. Used on manned and unmanned aircraft.

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ElectroOptic Sensors

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  1. ElectroOptic Sensors Matt McKeever Jonathan Baker UAV Design Team 10/26/2006 http://idahohelicopters.com/images/flir/kelvin275gimbal.jpg http://www.imaging1.com/images/j1022-18.jpg

  2. Surveillance & Reconnaissance • Used on manned and unmanned aircraft http://www.notbored.org/MQ1-predator.jpg http://www.efn.uncor.edu/dep/aero/Imagenes/Sr71_2.jpg

  3. Surveillance & Reconnaissance • Monitor large areas for activity http://www.notbored.org/UAV.html

  4. Surveillance & Reconnaissance • Take high definition shots of an area http://www.spyflight.co.uk/IMAGES/JPGS/UAVs/Global%20Hawk.jpg

  5. Infrared Imaging • Infrared wavelengths span from 750nm to 1mm • Useful for targeting heat emitting bodies • People, vehicles, occupied buildings http://www.opgal.com/infrared.php http://mvh.sr.unh.edu/mvhtools/images/irdiagram.png http://www.flir.com/imaging//Airborne/Applications/BorderPatrol.aspx

  6. IR Imaging • IR camera types: • Cooled detectors – • Vacuum sealed and cryogenically cooled to around 80 K to avoid self radiation flooding • Heavy and very expensive • Uncooled detectors – • Stabilized at ambient temperature • Cheaper, smaller, and lighter • Generally, sensors only respond to a single narrow IR wavelength range producing a monochromatic image. • IR camera systems vary greatly in weight and size, from less than 1lb to more than 50 lb. • Most medium sized systems require 18-32V and consume 200W-650W http://www.flir.com/imaging//Airborne/Applications/UAV.aspx http://www.1stoppostershop.com/products/Impact/Planes/

  7. Night Vision • Increase situational awareness • HUD compatible • Converts weak light from the visible and near-infrared spectrum to visible light http://www.es.northropgrumman.com/es/eos/PDF_Data_Sheets/ANAVS6V3.pdf

  8. Stereoscopic Imaging • Two cameras spaced apart and focused at the same object • Gives a 3D effect when the images are combined • Can be used to estimate height of vegetation or structures • Ratio of camera-to-camera distance and camera-to-subject distance needs to be greater than 1/400 to retain stereoscopic effects. • Greater than 1/80 is ideal http://www.khai.edu/eng/niipfm/images/strizhm-pic.jpg

  9. Onboard and Exterior Monitoring • Monitor passengers http://www.hokiesports.com/respect/

  10. Onboard and Exterior Monitoring • Evaluate surroundings http://www.tc.gc.ca/CivilAviation/systemSafety/newsletters/tp7317/1-01/302.htm

  11. Future Developments • Cameras in refueling drogues • Commercial airliners with interior and exterior cameras • Lighter weight and higher definition cameras • Integration into UAV’s for lower cost

  12. Thoughts on Design • Weight is not much of a concern on larger aircraft • Camera requires a solid mounting location that allows for a wide field of view • Space required in cockpit for related electronics and displays • ElectroOptic components must be selected carefully for UAV’s and small aircraft

  13. ElectroOptics and Design Teams • AIAA: • Possible integration of general surveillance and reconnaissance technologies along with onboard and exterior monitering. • HPA: • No real need for ElectroOptic sensors • Must be able to shave as much weight as possible • UAV: • Platform is designed and built around advanced imagery technologies, including ElectroOptic sensors. • Space and payload are very limited • A stable aircraft is desired for aerial photography

  14. Conclusion • Increased safety to the aviation community • Accounts for most of UAV missions • Allows for increased ability for aircraft operating in non-ideal conditions http://www.engsoc.carleton.ca/~biffs/GR/Screens/April_7_2004/Heli1.jpg

  15. References • http://www.es.northropgrumman.com/es/eos/products.htm • http://www.findarticles.com/p/articles/mi_m0UBT/is_23_17/ai_102927754/pg_1 • http://www.flir.com • http://www.notbored.org/UAV.html • http://www.raytheon.com • http://www.stereoscopy.com • http://www.wikipedia.org/

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