Designing the waveform bandwidth and time duration of radar oriented to collision warning performance for better resource efficiency

Abstract Radar is an important sensor for various types of intelligent agents. The increasing number of radars implemented in agents makes interference between them a noteworthy issue. One method of interference mitigation is to limit the electromagnetic resources in the frequency and time domain used by a radar. However, the problems of how many resources are necessary and how to optimally utilize the limited resources have not been addressed. In this paper, we take the collision warning (CW) function as an example and propose a method of designing the radar waveform parameters oriented to the CW performance. We propose a metric to quantify the CW performance and study how the radar waveform parameters (bandwidth and duration) influence this metric. Then, the waveform parameters are designed with a limit on the resources to optimize the CW performance. Numerical results show that the proposed design outperforms the state-of-the-art parameter settings in terms of CW performance and resource efficiency.