Drag-free estimation feasibility study
A drag compensation system for solar probes and other spacecraft that require a drag-free capability is presented. Estimation techniques, derived from modern control theory, are proposed.
Schaechter, D. B.↗
Engineering topics
Carta, D. G.
Publications and source records attributed to Carta, D. G..
Optimal estimation of undersea acoustic transponder locations
Using principles from multilateration and optimal estimation theories an approach is derived for estimating the relative positions of three or more submerged and anchored acoustic transponders. The procedure is not constrained to processing range data collected at special points or on special trajectories. While the data normally collected over transponders and between transponder pairs can be processed, simultaneous ranges from anywhere on the surface to three or more transponders can also be processed. Simulated examples involving four stations in different geometries with different range collection schemes demonstrate the effectiveness of the procedure.
Carta, D. G.↗
Low-order approximations for the normal probability integral and the error function
Rational fractions of the form 0.5/(a + bx +
Carta, D. G.↗
PROBLEMS OF MILLIPOUND THRUST MEASUREMENT - THE ''HANSEN SUSPENSION.''
Problems encountered in the measurement of millipound thrust, and the use of the hansen suspension system
ELECTRIC PROPULSION↗
PROBLEMS OF MILLIPOUND THRUST, THE ''HANSEN SUSPENSION''
Hansen suspension for millipound thrust measurement
HANSEN SUSPENSION↗