Optimisation of sparse array configuration using ambiguity function in automotive radar application

• Main Authors: Zou Le, Wang Wei, Song Song, Wang Xuetian
• Format: Article
• Language: English
• Published: Wiley 2019-07-01
• Series: The Journal of Engineering
• Subjects: linear antenna arrays; direction-of-arrival estimation; array signal processing; road vehicle radar; genetic algorithms; radar antennas; radar signal processing; correlation methods; genetic algorithm; strong correlation region; receiver; transmitters; direction of arrival estimation; angular resolution; radar performance; automotive radar application; sparse array configuration; ambiguity function; automotive radar system; linear antenna array configuration; optimisation method
• Online Access: https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0211
• ISSN: 2051-3305

Direction of arrival estimation is one of the key technologies in automotive radar system. The angular resolution is an important indicator for evaluating the radar performance. Here, an optimisation method of linear antenna array configuration used for automotive radar system is presented. The array is composed of three transmitters and four receiver (3T4R). By minimising the strong correlation region of the ambiguity function using genetic algorithm. A desired angular resolution is achieved under several certain constraints. Simulation results demonstrate the validity of proposed method.