Nanosatellite Attitude Estimation from Vector Measurements Using SVD-Aided UKF Algorithm

Smart Nanosatellite Attitude Propagator

Quaternion Attitude Estimation Using Vector Observations

This paper contains a critical comparison of estimators minimizing Wahba’s loss function. Some new results are presented for the QUaternion ESTimator (QUEST) and EStimators of the Optimal Quaternion (ESOQ and ESOQ-2) to avoid the computational burden of sequential rotations in these algorithms. None of these methods is as robust in principle as Davenport’s q-method or the Singular Value Decompo...

Attitude and Position Estimation from Vector Observations

This paper introduces three novel methods to evaluate attitude and position from vector observations using a vision-based technology camera. The first approach, called Linear Algebra Resection Approach (LARA), solves for attitude and position simultaneously and can be used in the lost-in-space case, when no approximate solution is available. The solution is shown to be the left eigenvector asso...

Attitude Determination of Multirotor Aerial Vehicles Using Camera Vector Measurements

The employment of embedded cameras in navigation and guidance of Unmanned Aerial Vehicles (UAV) has attracted the focus of many academic researches. In particular, for the multirotor UAV, the camera is widely employed for applications performed in indoor environments, where the GNSS signal is often unreliable and electromagnetic interference can be a concern. In the literature, images are mostl...

Attitude estimation for accelerated vehicles using GPS/INS measurements

An advanced attitude observer for rigid bodies evolving in 3D-space using GPS-velocity and INS measurements has been proposed recently in the literature without specifying its domain of convergence and stability. With respect to conventional solutions, which do not involve linear velocity measurements, this observer is better adapted for vehicles subjected to important linear accelerations. The...