Essays about: "Magnetometers"

Showing result 11 - 15 of 24 essays containing the word Magnetometers.

1. 11. Attitude Determination and Control of the CubeSat MIST

   University essay from KTH/Farkost och flyg

   Author : Jiewei Zhou; [2016]
   Keywords : ;

   Abstract : The ADCS concept in MIST reects the limitations of the CubeSat in terms of space, power and onboard computer computational capability. The control is constrained to the use of only magnetic torquers and the determination to magnetometers and Sun sensors in spite of the the under-actuation and underdetermination during eclipses. READ MORE

3. 12. Groundwater occurrence and quality in Bulawayo province, Zimbabwe

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Anton Nygren; Edvard Nordenskjöld; Erik Östblom; [2016]
   Keywords : total dissolved solids; salinity; electrical conductivity; electrical resistivity tomography; vertical electrical sounding; magnetic field; auger holes; saturated hydraulic conductivity;

   Abstract : This study focused on determining the groundwater flow paths in the crystalline subsurface rocks of the Bulawayo metropolitan, Zimbabwe, through analysing the discontinuities of the electrical properties of the ground, as well as in the magnetic field of the underlying rocks. Further, borehole water quality was analysed by measuring and mapping several chemical parameters, specifically TDS, salinity and the electrical conductivity. READ MORE

4. 13. Unscented Kalman Filters for Attitude and Orbit Estimation of a Low Earth Orbit CubeSat

   University essay from KTH/Rymd- och plasmafysik

   Author : Vlad Grigore; [2015]
   Keywords : ;

   Abstract : In this paper two Unscented Kalman Filters (UKF) are implemented to solve the estimation of a satellite's position in orbit and its orientation relative to Earth's Centered Inertial frame. Their aim is to see if an absolute position accuracy of less than 1 km and an orientation estimation to less than 1 0 are possible for a 3U CubeSat with GPS, sun sensors, magnetometers and a star tracker as sensors. READ MORE

5. 14. State Estimation of UAV using Extended Kalman Filter

   University essay from Reglerteknik; Tekniska högskolan

   Author : Thom Magnusson; [2013]
   Keywords : ;

   Abstract : In unmanned systems an autopilot controls the outputs of the vehicle withouthuman interference. All decisions made by the autopilot will depend on estimatesdelivered by an Inertial Navigation System, INS. For the autopilot to take correctdecisions it must rely on correct estimates of its orientation, position and velocity. READ MORE

6. 15. Fault diagnosis of a Fixed Wing UAV Using Hardware and Analytical Redundancy

   University essay from Fordonssystem; Tekniska högskolan

   Author : Michael Andersson; [2013]
   Keywords : Fault Diagnosis; Model based diagnosis; Redundancy; Autopilot; UAV; fixed-wing;

   Abstract : In unmanned aerial systems an autopilot controls the vehicle without human interference. Modern autopilots use an inertial navigation system, GPS, magnetometers and barometers to estimate the orientation, position, and velocity of the aircraft. In order to make correct decisions the autopilot must rely on correct information from the sensors. READ MORE