1 / 8

Akoya - Bandit OrbitVision

Akoya - Bandit OrbitVision. Washington University in St. Louis School of Engineering and Applied Science. Erin Beck Justin Char Lane Haury Cash Carr. Goals: Simulate the complete Akoya-Bandit camera-to-radio system Photograph LED array as it would appear on Akoya in daylight

samson-parks
Download Presentation

Akoya - Bandit OrbitVision

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Akoya - BanditOrbitVision Washington University in St. Louis School of Engineering and Applied Science Erin Beck Justin Char Lane Haury Cash Carr

  2. Goals: • Simulate the complete Akoya-Bandit camera-to-radio system • Photograph LED array as it would appear on Akoya in daylight • Photograph the Earth as it would appear to the Akoya Earthside camera

  3. Akoya - Bandit: • Bandit is a 4 kg service vehicle housed within Akoya, a 25 kg parent satellite. On orbit, Bandit will undock from Akoya, navigate relative to it while completing simple to complex tasks, and redock. • Bandit navigates by observing a pattern of LEDs on Akoya’s surface and calculating position. • Two cameras aid navigation: • BanditCam: b/w camera that photographs LEDs, from which software determines position • AkoyaCam Dockside: color camera looking at Bandit from the dock, used for backup sighting of Bandit • One additional camera: • AkoyaCam Earthside: color camera to photograph Earth

  4. SHOT II: • BanditCam: • Photographs sample LED array (b/w) • Transmits locally over 900 MHz radios, simulating the link between Bandit and Akoya. Then transmits over 2.4 GHz radios to ground, simulating the link from Akoya to ground. • AkoyaCam Earthside: • Photographs Earth horizon (color) • Transmits directly over 2.4 GHz radios to ground. • Accelerometer: • We hope to have an accelerometer as a secondary position sensor on Bandit. SHOT II includes one accelerometer; we are measuring its sensitivity.

  5. Mass: 1.62 kg before tape Power: 20 1.5V Li batteries (72 W-hr for components, 18 W-hr for heaters) Radio frequencies: 900 MHz at 100 mW, 2.4 GHz at 1 W Balloon attachment: 1/4 inch threaded brass rod through center, attached with washer and nut on each end

  6. Drop Test • Stair Pitch Test • Whip Test • Cooler Test • Table Test: • Photographs successfully downlinked across the table • At 115200 baud, we receive one 360x240 b/w image in ~30 sec or one 360x240 color image in ~80 sec.

  7. Demonstrate end-to-end feasibility and functionality of Akoya-Bandit OrbitVision system. • Radios: Operate without interfering with each other • Lab test showed no interference. We could use the exact same system at higher power on orbit. • BanditCam: See LEDs. We may not be able to distinguish different shades as different colors, but we expect that the 100 millicandela Super Blue LEDs will be most visible. • AkoyaCam Earthside: We receive clear long-distance images, currently in one color only. • Accelerometer: The manufacturer claims extreme sensitivity, but it is unproven. We expect some readings, but have no prediction of magnitude.

  8. Internal layout of components • Mobile Ground Station User Interface • End-to-end demonstration of BanditCam • Includes the following components and their connections: • BanditCam • 900 MHz transmitter and receiver • Frame Capture Board • Atmel (ATmega128) • 2.4 GHz transmitter and receiver • MGS computer

More Related