Millimeter-wave radars are used as sensors in Adaptive Cruise Control (ACC) systems, which have been brought to the market over the last several years. Since the systems used to aim at driver's comfort, the demands for superior detection performances, such as wide target distance detection range, were not so high. However, millimeter-wave radars have recently been applied not only to such comfort systems, but also to collision mitigation systems: namely, a pre-crash safety system. Such a system gives an alarm to the driver when possible collision is anticipated. In case that the collision is unavoidable, the system controls some devices, such as seat belt and/or brakes to mitigate the collision damage. In the future, millimeter-wave radars will be used in even more advanced systems, such as Low-Speed Following (LSF) and/or Full Speed Range ACC (FSRA) systems, including automated stop-and-go. Therefore, millimeter-wave radars of the new generation will need superior performances and reliability. The paper presents a novel millimeter-wave radar developed by the authors based on the FM-pulse Doppler and the Polarization-twisting Cassegrain antenna with mechanical scanning mechanism. This millimeter-wave radar can be used not only as a sensor in driver's comfort systems, but it can also be applied to safety systems, due to the following advantages: (1) Wide target detection distance range with high distance accuracy (2) No 'ghost' output for multiple target detection (3) Superior accuracy of lateral position and excellent separation performance of vehicles running side by side. Test results of the prototype millimeter-wave radar are shown, and the above-mentioned advantages are discussed in detail in the paper .
Development of millimeter-wave radar for latest vehicle systems
Entwicklung eines Millimeterwellenradars für die neuesten Fahrzeugsysteme
2005
12 Seiten, 12 Bilder, 2 Tabellen, 3 Quellen
Conference paper
English
Development of Millimeter-wave Radar for Latest Vehicle Systems
British Library Conference Proceedings | 2005
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