An Optical NanoSat Detection and Ranging System (SADARS)
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Transcript of An Optical NanoSat Detection and Ranging System (SADARS)
An Optical NanoSat Detection and Ranging System (SADARS)Maurisa OronaAndrew CouchEd Wilson
Goal of Mission
Create a satellite detection and ranging system (SADARS) for a fleet of nano satellites
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
Nano Satellite Model
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
Computer Resources
Intel NUC D54250WYK
Intel® Rapid Start Technology 4th generation Intel® Core™ i5-4250U processor Intel® Quick Sync Video for fast video encoding DisplayPort 1.2* for driving 4k displays. Four USB 3.0 ports
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
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
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
LED Placements under Consideration
Geometric Pattern Hemisphere
Satellite Ranging Study
0 5 10 15 20 25 300
200
400
600
800
1000
1200
1400
1600
1800
Detection Capabilities at Varried Distances
Distance (meters)
Pixe
lsd d
etec
ted
Ranging Data
4 Meters
28 Meters
Acknowledgements
Arkansas Space Grant Consortium RID Dr. Adam Huang, PI, University of Arkansas at Fayetteville Dr. Yupo Chan, University of Arkansas at Little Rock