USE OF ENHANCEMENT PLATES FOR IMPROVED DOPPLER RADAR PERFORMANCE FOR GROUND TRANSPORT SYSTEMS
A method of improving the performance of X-Band Doppler radars for ground transport vehicles is presented. The technique utilizes small metallic reflectors placed directly below the guideway surface. From the results of preliminary laboratory and on-road tests it is concluded that improved accuracy of on-board position and velocity measurements result. In the safe operation of high-speed short time-headway automatically controlled ground transport systems, there is a need for highly accurate position and velocity sensors. Since the advent of low-cost solid-state X-band sources, much attention has been focused on the use of Doppler radars operating with the rough-surface backscattered signal from the roadway as velocity sensors for ground-based vehicles. The results to date indicate that, while the method may be adequate for conventional applications, some improvement is needed before these radars can be used in high-capacity automated transit systems.
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Corporate Authors:
Institute of Electrical and Electronics Engineers (IEEE)
3 Park Avenue, 17th Floor
New York, NY United States 10016-5997 -
Authors:
- Mayhan, R J
- Olson, K W
- Takasaki, G
- Conference:
- Publication Date: 1976-11
Media Info
- Features: Figures; References;
- Pagination: p. 1644-16
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Serial:
- Volume: 64
- Issue Number: 11
Subject/Index Terms
- TRT Terms: Applications; Automated vehicle control; Doppler effect; Ground transportation; Highway safety; Highway traffic control; Measurement; Radar; Research; Sensors; Traffic control; Variables; Velocity
- Old TRIS Terms: Automated transit system; Mechanical variables measurement
- Subject Areas: Highways; Operations and Traffic Management; Public Transportation; Research; Safety and Human Factors;
Filing Info
- Accession Number: 00159863
- Record Type: Publication
- Source Agency: Engineering Index
- Files: TRIS
- Created Date: Dec 27 1982 12:00AM