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An Optical NanoSat Detection and Ranging System (SADARS)

An Optical NanoSat Detection and Ranging System (SADARS). Maurisa Orona Andrew Couch Ed Wilson. Goal of Mission. Create a satellite detection and ranging system (SADARS ) for a fleet of nano satellites . Mission Objectives.

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An Optical NanoSat Detection and Ranging System (SADARS)

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  1. An Optical NanoSat Detection and Ranging System (SADARS) Maurisa Orona Andrew Couch Ed Wilson

  2. Goal of Mission • Create a satellite detection and ranging system (SADARS) for a fleet of nano satellites

  3. Mission Objectives • Create an optical detection and communication system using LED’s and photo detectors • Develop a system of satellite identification and ranging employing video cameras

  4. Nano Satellite Model

  5. Communication and Detection • Serial Communications • Send out two bytes • First byte corresponds to identify the satellite • Second byte identifies which side of the satellite is being detected • Detectors • PIN Photo Diode Detectors • Video Camera

  6. Computer Resources Intel NUC D54250WYK •  Intel® Rapid Start Technology • 4th generation Intel® Core™ i5-4250U processor • Intel® Quick Sync Video for fast video encoding • DisplayPort1.2* for driving 4k displays. • Four USB 3.0 ports

  7. Overview of Optical Communications • Optical communications using LED’s and diode lasers are employed in many situations. • Advantages • Difficult to intercept optical systems by unauthorized agents • Greater amount of information can be communicated that by traditional radio methods • Disadvantages • Difficult to align the transmitters and receivers • Fog, rain and aerosols cause degradation of the signal

  8. Optical Communications Between Satellites • Advantages • In low earth orbit (LEO) problems with aerosols, rain and fog are minimal • Difficulties • Aligning the beams between moving satellites

  9. Varied Approaches • Optical communication could be established using LEDs, diode lasers or other optical emitters • Diode Lasers • Produce more energy than LEDs but the beams are highly collimated and therefore difficult to be detected by the optical receivers • Other Optical Emitters • Other optical transmitters can be employed but generally require higher voltages and currents than LEDs and are still being considered • LEDs • Optical output is weaker than that of a diode laser, but they can be purchased to emit over a wider solid angle and are therefore easier to detect

  10. LED Placements under Consideration • Geometric Pattern Hemisphere

  11. Satellite Ranging Study

  12. Ranging Data • 4 Meters • 28 Meters

  13. Acknowledgements • Arkansas Space Grant Consortium RID • Dr. Adam Huang, PI, University of Arkansas at Fayetteville • Dr. Yupo Chan, University of Arkansas at Little Rock

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