Engineering topics

Beard, R.

Publications and source records attributed to Beard, R..

3 records

NASA NTRS2000

A total estimator of the Hadamard function used for GPS operations

We describe a method based on the total deviation approach whereby we improve the confidence of the estimation of the Hadamard deviation that is used primarily in GPS operations.

frequency stability total variance Hadamard varian↗

NASA NTRS1999

Fuel Optimiation for Constrained Rotation of Spacecraft Formations

This paper considers the problem of reorienting a constellation of spacecraft such that the fuel distributed across the constellation is both conserved and expended uniformly.

Formation↗

NASA NTRS1998

Constellation Templates: An Approach to Autonomous Formation Flying

Multiple spacecraft flying in formation is a new paradigm that is key to the success of several future NASA missions.

formation flying interferometry spacecraft constel↗