ADAS (Advanced Driver Assistance Systems) are relying significantly on RADAR sensors to achieve an optimum in terms of cost and reliability. In this article the principle of FMCW (Frequency Modulated Continuous Wave) RADAR operation are introduced, give a basic signal processing overview and discuss the fundamental figures of merit that are provided by the Freescale solution. The level of maturity and integration shows that 77 GHz front-end systems have achieved today. A state-of-the-art front-end system example will be discussed. To complete the description of a RADAR sensor the local microcontroller is also discussed that provides reliable connectivity to the remainder of the car's E/E systems and that is powerful enough to pre-process the raw multiple-channel RADAR base band signals. Typical examples of the features of Freescale's microcontrollers to support Functional Safety for RADAR sensors conclude the presentation. In this article it is shown that SiGE BiCMOS technology multi-channel RADAR sensors are cost effective, even using the latest advances in processing algorithms for digital beam forming. Integrated RF devices facilitate the implementation of a high power RF front-end with fast modulation, excellent linearity and high levels of integration. A specific family of MCU devices for the Chassis market segment provides sufficient signal processing resources for advanced receiver architectures. In particular low-cost digital beam forming is made possible by high-performance signal processing libraries. And an integrated safety concept is provided based on a lock-step multi-core architecture.
77 GHz RADAR sensor systems
2011
10 Seiten, 6 Bilder, 10 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
TIBKAT | 1982
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European Patent Office | 2023
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