Microspace nanosatellites

speaker: Giulio Manzoni event: Coding Girls SG ** satellites applications eurisy.org monitoring

• water quality
• landslides combines geographic information and satellite to generate 3d city models suggest routes for ships based on sea conditions and wind oil, gas, and mining ** stabilization Bdot, generate magnetic field to reduce the spinning ** pointing the camera with an angle of 1.5 degree the sun is about 0.5 degree, the size of a finger nail attitude determination, the orientiation of the satellite wrt to earth measure the magnetic field and the angle to the sun with sun sensors wahba’s problem solved by singular value decomposition when sun is not visible, use EKF to predict the orientation ** controlling the attitude micropropulsion thrusters reaction wheels ** athenoxat five imaging payloads fish eye camera wide angle camera (300m resolution) night vision (25m) determine the resolution by comparing against detailed maps ** space is changing moving towards micro satellites smaller satellites and higher resolutions ** launch cost for a 3U satellite, 200-300K