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| Content Provider | IET Digital Library |
|---|---|
| Author | Wang, Yuankai Xiao, Zelong Wu, Li Xu, Jianzhong Zhao, Huichang |
| Abstract | The chirp sequence waveform is one of the most commonly used waveforms for automotive frequency-modulated continuous wave radars. When a chirp sequence waveform is applied, the range–Doppler processing method based on two-dimensional fast Fourier transform can be used to extract the range and velocity parameters of multiple targets from the beat signals. However, conventional chirp sequence waveforms suffer from the Doppler ambiguity problem, which results in ambiguities in velocity measurement. In this study, the authors propose a novel jittered chirp sequence waveform. In the proposed waveform, the initial times of the chirps are randomly jittered. According to the compressed sensing theory, they establish the parameter design principle for the new waveform, and apply sparse recovery method to achieve unambiguous Doppler processing. Subspace pursuit algorithm is recommended as the suitable sparse recovery method for Doppler processing due to its low complexity and stable recovery performance. The effectiveness of the proposed waveform and its corresponding signal processing method are verified by simulation and experimental results. |
| Starting Page | 1877 |
| Ending Page | 1885 |
| Page Count | 9 |
| ISSN | 17518784 |
| Volume Number | 11 |
| e-ISSN | 17518792 |
| Issue Number | Issue 12, Dec (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rsn/11/12 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2017.0236 |
| Journal | IET Radar, Sonar & Navigation |
| Publisher Date | 2017-08-30 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Acceleration Approximation Theory Automobile Electronics Automotive Frequency-modulated Continuous Wave Radars Beat Signal Chirp Modulation Code Compressed Sensing CS-based Unambiguous Doppler Processing CW Radar Doppler Ambiguity Problem Doppler Radar Fast Fourier Transform FM Radar Integral Transforms in Numerical Analysis Interpolation And Function Approximation Jitter Jittered Chirp Sequence Waveform Numerical Analysis Parameter Design Principle Radar Equipment Radar Signal Processing Range Parameter Extraction Range-Doppler Processing Method Road Vehicle Radar Rotation Measurement Signal Processing And Detection Signal Processing Method Sparse Recovery Method SubSpace Pursuit Algorithm System And Application Two-dimensional Fast Fourier Transform Unambiguous Doppler Processing Velocity Velocity Measurement Velocity Parameter Extraction |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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