Engineering topics

Collier, J.

Publications and source records attributed to Collier, J..

3 records

NASA NTRS2003

Access and visualization using clusters and other parallel computers

JPL's Parallel Applications Technologies Group has been exploring the issues of data access and visualization of very large data sets over the past 10 years. this work has used a number of types of parallel computers, and today includes the use of commodity clusters. This talk will highlight some of the applications and tools we have developed, including how they use parallel computing resources, and specifically how we are using modern clusters.

parallel computers clusters↗

NASA NTRS2001

Lidar-based hazard avoidance for safe landing on Mars

This paper describes the algorithms and the models that comprise a scanning lidar-based hazard avoidance simulation including a terrain generator, a lidar model, hazard avoidance algorithms and powered landing guidance algorithms.

hazard↗

NASA NTRS1975

Tunnel injection into gate oxide traps

An experimental method is described for measuring the density of oxide traps in the gate oxide of an MOS transistor as a function of energy and position near the silicon interface. Measurements are obtained from different oxide growth processes and after Co-60 irradiation. The results are related to long-term drift of threshold voltage.

Maserjian, J.↗