On fast chirp modulations and compressed sensing for automotive radar applications

Abstract

In the last decade radar based driver assistance systems have increased the safety in all vehicle classes and get the access to mass market applications. Currently slow FMCW waveforms are the state of the art principle for automotive radar sensors at 24 GHz and 77 GHz. This contribution presents an innovative 77 GHz multi channel radar sensor, with the capability for fast FMCW PLL locked chirp modulations down to 10 µs. It gives a brief review on short FMCW chirp modulations and its processing. Furthermore the application of compressed sensing algorithms for r/v estimation is discussed and system simulations and measurements are presented.

Modulation type classification of interference signals in automotive radar systems

“…In a fast chirp FMCW radar system, the frequency of a transmitted signal changes rapidly compared to a conventional slow chirp FMCW radar system [5]. The time‐varying frequency graph is shown in Fig.…”

“…The frequency‐modulated continuous wave (FMCW) radar is widely used as an automotive radar [4]. Recently, the fast chirp FMCW radar has been used for target estimation on the road [5].…”

Fast chirp FMCW Radar in automotive applications

“…It limits the range resolution for the FMCW radar in automotive application. Recently, fast chirp modulation is getting more and more attractions to improve the performance of FMCW radar in automotive applications [7]- [8]. The major advantage is the range resolution improvement.…”

Effort Considerations of Compressed Sensing for Automotive Radar

“…The affected data are detected and reconstructed as introduced in [6]. In the second example the data rate of the radar signal is reduced as shown in [7] and [8].…”