Digital signal processing (3rd ed.): principles, algorithms, and applications
Digital signal processing (3rd ed.): principles, algorithms, and applications
Extrapolation, Interpolation, and Smoothing of Stationary Time Series
Extrapolation, Interpolation, and Smoothing of Stationary Time Series
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This paper describes the design of an automobile forward collision avoidance system based on digital beamforming techniques. The advantages of using digital beamforming over the existing system is stressed upon. In the proposed system, an adaptive array of antennas is used in the receiver side to form a pencil beam. The methodology of electronically controlling the direction of the pencil beam is described. Various methods of power spectrum estimation techniques are analyzed and compared both theoretically and through simulation in order to recommend the best approach for the proposed system. Linear prediction-based tracking algorithms are compared and the most accurate and efficient of them is identified. A DSP-based or ASIC-based implementation of this system can perform the entire collision avoidance functionality inside the host vehicleŠs on board computer.