1 citations · 3 across the 8 of their papers we have counts for
9 papers
Fillet-based RRT*: A Rapid Convergence Implementation of RRT* for Curvature Constrained Vehicles
James Swedeen, Greg Droge, Randall Christensen
Rapidly exploring random trees (RRTs) have proven effective in quickly finding feasible solutions to complex motion planning problems. RRT* is an extension of the RRT algorithm tha…
Path Planning with Uncertainty for Aircraft Under Threat of Detection from Ground-Based Radar
Austin Costley, Greg Droge, Randall Christensen +2
Mission planners for aircraft operating under threat of detection by ground-based radar systems are concerned with the probability of detection. Current path planning methods for s…
Sensitivity of Single-Pulse Radar Detection to Radar State Uncertainty
Austin Costley, Randall Christensen, Robert C. Leishman +1
Mission planners for aircraft operating under threat of detection from ground-based radar systems are often concerned with the probability of detection. Current approaches to path…
Sensitivity of Single-Pulse Radar Detection to Aircraft Pose Uncertainties
Austin Costley, Randall Christensen, Greg Droge +1
Mission planners for aircraft that operate in radar detection environments are often concerned the probability of detection. The probability of detection is a nonlinear function of…
Sensitivity Study of Fiducial-Aided Navigation of Unmanned Aerial Vehicles
Amanda J. Strate, Randall Christensen
The possible applications and benefits of autonomous Unmanned Aerial Vehicle (UAV) use in urban areas are gaining considerable attention. Before these possibilities can be realized…
A Closed-Loop Linear Covariance Framework for Vehicle Path Planning in a Static Uncertain Obstacle Fiel
Randall Christensen, Greg Droge, Robert Leishman
Path planning in an uncertain environment is a key enabler of true vehicle autonomy. Over the past two decades, numerous approaches have been developed to account for errors in the…
GPS-Denied Navigation Using SAR Images and Neural Networks
Teresa White, Jesse Wheeler, Colton Lindstrom +2
Unmanned aerial vehicles (UAV) often rely on GPS for navigation. GPS signals, however, are very low in power and easily jammed or otherwise disrupted. This paper presents a method…
Sensitivity of BPA SAR Image Formation to Initial Position, Velocity, and Attitude Navigation Errors
Colton Lindstrom, Randall Christensen, Jacob Gunther
The Back-Projection Algorithm (BPA) is a time domain matched filtering technique to form synthetic aperture radar (SAR) images. To produce high quality BPA images, precise navigati…
Zero-Error Tracking for Autonomous Vehicles through Epsilon-Trajectory Generation
Clint Ferrin, Greg Droge, Randall Christensen
This paper presents a control method and trajectory planner for vehicles with first-order nonholonomic constraints that guarantee asymptotic convergence to a time-indexed trajector…