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Quaternion Attitude Estimation Using Vector Observations

- F. Markley, D. Mortari
- Mathematics
- 1 June 2000

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… Expand

ESOQ: A Closed-Form Solution to the Wahba Problem

- D. Mortari
- Mathematics
- 1 June 1997

A closed-form solution to the problem of optimal spacecraft attitude estimation based on vectors observation, known as the Wahba problem, is presented. The algorithm first provides the closed-form… Expand

Second Estimator of the Optimal Quaternion

- D. Mortari
- Geology
- 1 September 2000

ENGINEERING NOTES are short manuscripts describing new developments or important results of a preliminary nature. These Notes cannot exceed 6 manuscript pages and 3 gures; a page of text may be… Expand

How to Estimate Attitude from Vector Observations

- F. Markley, D. Mortari
- Computer Science
- 1999

TLDR

The Flower Constellations

- D. Mortari, M. P. Wilkins, C. Bruccoleri
- Physics
- 1 March 2004

This paper introduces a methodology to design a set of satellite constellations, called the Flower Constellations, which is generally characterized by repeatable ground tracks and a suitable phasing… Expand

Norm-Constrained Kalman Filtering

- Renato Zanetti, M. Majji, R. Bishop, D. Mortari
- Mathematics
- 1 September 2009

The problem of estimating the state vector of a dynamical system from vector measurements when it is known that the state vector satisfies norm equality constraints is considered. The case of a… Expand

The Pyramid Star Identification Technique

- D. Mortari, M. Samaan, C. Bruccoleri, J. Junkins
- Physics
- 1 September 2004

: A new highly robust algorithm, called Pyramid, is presented to identify the stars observed by star trackers in the general lost-in-space case, where no a priori estimate of pointing is available.… Expand

A Survey on Star Identification Algorithms

- IV BenjaminB.Spratling, D. Mortari
- PhysicsAlgorithms
- 29 January 2009

TLDR

The 3-D lattice theory of Flower Constellations

- Jeremy J. Davis, Martin E. Avendano, D. Mortari
- Physics
- 14 June 2013

TLDR

The 2-D lattice theory of Flower Constellations

- Martin E. Avendano, Jeremy J. Davis, D. Mortari
- Physics
- 14 June 2013

The 2-D lattice theory of Flower Constellations, generalizing Harmonic Flower Constellations (the symmetric subset of Flower Constellations) as well as the Walker/ Mozhaev constellations, is… Expand

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