The lifting of Lozano[9] is generalized, and shown to be one in a large class of liftings which enjoy the same zero annihilation properties (i.e., placement of transmission seros to the origin). Many useful properties of ...

This paper describes the design and initial test results of an extended Kalman filter that has been developed at Jet Propulsion Laboratory (JPL) for post-flight reconstruction of the trajectory and attitude history of a ...

The paper presents the hardware implementation and initial tests from a low-power, high-speed reconfigurable sensor fusion processor.

ASTERIA (Arcsecond Space Telescope Enabling Research In Astrophysics) is a CubeSat space telescope currently operating in low-Earth orbit. It is expected to remain in orbit at least through October 2019. Developed as ...

Adaptive Periodic-Correlation (APC) algorithm was developed for use in extended-scene Shack-Hartmann wavefront sensors. It provides high-accuracy even when the sub-images in a frame captured by a Shack-Hartmann camera are ...

This paper describes an extended-image tracking technique based on the maximum likelihood estimation.

This paper will present our understanding of the hollow cathode barium depletion mechanism and the design required to achieve the required life.

This paper summarizes the architecture, capabilities, characteristics and uses of the current SPICE ancillary information system, and then outlines plans and ideas for how this system can be extended to meet future space ...

An external comparison between the infrared 2MASS and the optical UCAC positions was performed, both being on the same system, the ICRS. About 48 million sources in common were identified. Random errors of the 2MASS catalog ...