PATH

FMCW MMW Radar for Automotive Longitudinal Control

David, William
1997

This report presents information on millimeter wave (MMW) radar for automotive longitudinal control. It addresses the fundamental capabilities and limitations of millimeter waves for ranging and contrasts their operation with that of conventional microwave radar. The report analyzes pulsed and FMCW radar configurations, and provides detailed treatment of FMCW radar operating at MMW frequency, its advantages and disadvantages as they relate to range and velocity measurements.

Field Test of Vehicle-Mounted, Forward Looking Range Sensor in Closed-Loop AVCS

Kanaris, Alex
Ioannou, Petros
1998

The purpose of MOU-233 is to evaluate and test a low cost, short range radar sensor developed by Amerigon corporation through a subcontract with the University of Southern California. The radar is designed to be used as a ranging sensor for automatic vehicle following applications. It is intended to be mounted in the front of the vehicle and provide measurements of the distance between the front of the vehicle and the rear of any vehicle or object ahead within a maximum distance of 17 feet. The output of the radar as supplied by Amerigon, is a 32-bit binary code, using one bit to represent...

Field Deployment and Operational Test of an Agent-Based, Multi-Jurisdictional Traffic Management System

Rindt, Craig R.
McNally, Michael G.
2007

This report describes a reinterpretation of how the philosophy underlying the Cartesiusmulti-jurisdictional incident management prototype can be used as an organizing princi-ple for real-world multi-jurisdictional systems. This interpretation focuses on the power ofthe Distributed Problem Solving (DPS) approach Cartesius uses to partition analysis andoptimization functions in the system across jurisdictions. This partitioning minimizes theamount of local information that must be shared between jurisdictions and paves the way fordefining a collection of TMC-to-TMC messages that support the...

Feasibility Study of Fully Autonomous Vehicles Using Decision-Theoretic Control

Forbes, Jeffrey
Et. al.
1997

This project studied the feasibility of constructing an autonomous vehicle controller based on probabilistic inference and utility maximization. Several theoretical and algorithmic advances were required in order to create an inference system capable of handling vehicle monitoring in a real-time fashion. New methods were also developed for learning probabilistic models from data, and for learning control policies given reward/penalty feedback.

Feasibility Study of Advanced Technology HOV Systems: Volume 4: Implementation of Lateral Control Systems in Transitways

Chira-chavala, Ted
Zhang, W. B.
Walker, J.
Javandel, F.
Demsetz, L.
1992

This study investigates issues concerning the implementation and impacts of lateral guidance/control systems and the phased implementation of these systems in exclusive-access High Occupancy Vehicle (HOV) lanes. The study is divided into 5 volumes. The objectives of each volume are as follows: Vol. 1: identify strategies for early deployment of longitudinal control technologies on the highway, and to evaluate potential impacts of these strategies on traffic operation, highway capacity, and traffic accidents. Vol. 2A: assess the feasibility of early deployment of Roadway Powered Electric...

Feasibility Study of Advanced Technology HOV Systems: Volume 2a: Feasibility of Implementing Roadway Powered Electric Vehicle Technology in El Monte Busway: A Case Study

Chira-Chavala, Ted
Lechner, Edward H.
Empey, Dan M.
1992

This study investigates issues concerning the implementation and impacts of lateral guidance/control systems and the phased implementation of these systems in exclusive-access High Occupancy Vehicle (HOV) lanes. The study is divided into 5 volumes. The objectives of each volume are as follows: Vol. 1: identify strategies for early deployment of longitudinal control technologies on the highway, and to evaluate potential impacts of these strategies on traffic operation, highway capacity, and traffic accidents. Vol. 2A: assess the feasibility of early deployment of Roadway Powered Electric...

Feasibility Study of Advanced Technology HOV Systems: Volume 1: Phased Implementation of Longitudinal Control Systems

Chira-Chavala, Ted
Yoo, S. M.
1992

This study investigates issues concerning the implementation and impacts of lateral guidance/control systems and the phased implementation of these systems in exclusive-access High Occupancy Vehicle (HOV) lanes. The study is divided into 5 volumes. The objectives of each volume are as follows: Vol. 1: identify strategies for early deployment of longitudinal control technologies on the highway, and to evaluate potential impacts of these strategies on traffic operation, highway capacity, and traffic accidents. Vol. 2A: assess the feasibility of early deployment of Roadway Powered Electric...

Feasibility Study of Advanced Technology HOV Systems: Volume 3: Benefit Implications of Alternative Policies for Including HOV Lanes in Route Guidance Networks

Chira-Chavala, T.
Lin, W. H.
1992

This study investigates issues concerning the implementation and impacts of lateral guidance/control systems and the phased implementation of these systems in exclusive-access High Occupancy Vehicle (HOV) lanes. The study is divided into 5 volumes. The objectives of each volume are as follows: Vol. 1: identify strategies for early deployment of longitudinal control technologies on the highway, and to evaluate potential impacts of these strategies on traffic operation, highway capacity, and traffic accidents. Vol. 2A: assess the feasibility of early deployment of Roadway Powered Electric...

Fault Tree Analysis of an Automated Freeway with Vehicle-borne Intelligence

Hitchcock, Anthony
2004

This report summarizes research work conducted under TO4143 at the California PATH ATMS Center at the University of California, Irvine. This project has two tasks: Functionality enhancements of the PARAMICS simulation model through API programming for the on-line simulation application; On-line data fusion algorithm for a better section travel time estimation based on point detector data and probe vehicle data. In order to conduct these two tasks, we complete the following two related studies, which are the basis of the two tasks of this project: Development of the capability-enhanced...

Fault Detection and Tolerant Control for Lateral Guidance of Vehicles in Automated Highways

Patwardhan, Satyajit Neelkanth
1994

In this dissertation, the problem of fault tolerant control of automobiles is addressed. The three main problems handled in the dissertation are tire burst, sensor fault detection and slip angle control. The tire burst and sensor faults are important failure modes for automated highways, whereas the slip angle control problem is important during severe maneuvers for enhancing the vehicle safety.