Intelligent Transport System--Research On Millimeter Wave Radar For Automotive Anti-collision Technique And Experiment

Intelligent Transport Systems (ITS) are the same as Intelligent Vehicle-Highway Systems (IVHS),which are a high technique that covers road vehicles communication and drive technique, the researcher is exploring and researching it in the world, to gain a transport system of much safe, much efficient and no pollution is its intention. Southeast University is developing this technique at present by support of Jiangsu Transport Bureau. As the sub-item of Safety Drive Assist (SDA) system, the theory and experiments of anti-collision technique are researched in this paper.Follow is the layout of this task .One side is to track new technique developmental trend, combine with "Vehicle Drive Robot" -the achievement of our university to develop Safety Drive Assist (SDA) system; The other side is to make independence cell as human-machine combination, and get a practical anti-collision system as final intention. So the article has academic meaning and applied value, and there is referenced value for other related field.Follow is the main achievements of this article:a. For triangle radar waveform can't satisfy the expressway anti-collision's need, it only meets the single target situation, improved waveform is used in this paper. The improved waveform adds signal segment in a cycle to distinguish multi-targets.b. The signal processing technique of Wavelet is put forward in the paper. Traditional automotives anti-collision radar uses Short Time Fourier Transform(STFT) to deal with signal, it can't do as wavelet technique which can decompose signal according to frequency, it is useful to distinguish multi-targets, and wavelet technique can get rid of disturb of signal which is caused by road* fence, trees and buildings .c. A vehicle anti-collision experimental system is explored and manufactured, and the experiment and research is accomplished. The microcontroller of AVR is used as center in the experimental system, which has excellent effect in linearity correction for its high speed and low power merits, and waveform can be changed easily according to experimental need. The experimental system has been tested by detecting vehicles ahead, the result suits with academic analysis, so it provides the foundation of practical system-Vehicle anti-collision technique as sub-item of Intelligent Transport System will grow up andbe perfect in future. It will shorten the safe space between car heads and guarantee vehicles safety, so it will help to increase transport efficiency and keep economic fast growth.