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UID:0-269@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20201202T163000

DTEND;TZID=Asia/Jerusalem:20201202T173000

DTSTAMP:20230525T064303Z

URL:https://aerospace.technion.ac.il/events/towards-laser-communication-be
 tween-cubesats-and-drones/

SUMMARY:Towards Laser Communication Between Cubesats and Drones
DESCRIPTION:Lecturer:Leonid Pogorelyuk\n Faculty:Department of Aeronautics 
 and Astronautics\,\n Institute:MIT\n Location:https://technion.zoom.us/j/9
 2064872509\n Zoom: \n Abstract: \n Details: \n In the upcoming decade\, gr
 ound-to-space laser links will become abundant in scientific and industria
 l applications and Unmanned Aerial Vehicles (UAV) will transfer increasing
 ly larger volumes of data. Major companies such as SpaceX and OneWeb will 
 be deploying satellite constellations to provide high data-rate and low-la
 tency communication services\, including Free Space Optical (FSO) communic
 ation\; while smaller-scale cubesat missions are beginning to use lasers a
 s low-mass\, high-bandwidth and license-free alternatives to radio communi
 cation. FSO links can provide remote sensing UAV with higher data-rates\, 
 search and rescue missions with better accessibility\, and security-relate
 d applications with more reliable connectivity. Combined with satellite co
 nstellations\, drones also have the potential to provide aerial high-speed
  internet coverage for remote areas.\nYet\, laser communication from Low E
 arth Orbit (LEO) to small-sized UAV requires several technology demonstrat
 ions. Classical optical methods for telescope calibration (using stars) ar
 e too slow for rapid attitude estimation\, while inertial sensors are not 
 precise enough. A proposed approach to achieving the arcsecond-level preci
 sion necessary for signal tracking and acquisition\, is to deduce the orie
 ntation of the instrument by rapidly processing camera images to identify 
 distant control points. Another challenge associated with airborne telesco
 pes is the turbulence-induced wavefront disturbance. To improve the qualit
 y of the signal and reduce transmitter power requirements\, wavefront sens
 ing techniques from large stationary observatories need be adapted to low-
 cost mobile telescopes. This seminar discusses the development and testing
  of algorithms for high-precision image-based attitude determination and w
 avefront sensing from vehicles.\nZoom meeting
CATEGORIES:Seminars
LOCATION:https://technion.zoom.us/j/92064872509

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