Abstract
A novel grating lobe suppression method based on the difference in the relative position between the main lobe and grating lobes of different carrier frequency array patterns, is proposed to solve the problem of grating lobes in the array pattern due to the sparse array antenna spacing being larger than the signal wavelength. The algorithm makes use of the echo information of different carrier frequencies avoid large-scale search and reduce effectively the amount of computation. Firstly, the factors affecting the performance of the algorithm are determined theoretically. The key ones are then quantitatively analyzed and the relationship expression between the Peak SideLobe Ratio (PSLR) and frequency difference is deduced. It provides a theoretical basis for selecting quickly the optimal frequency difference for grating lobe suppression. Finally, the effectiveness of the algorithm for grating lobe suppression and the correctness of the expression of the relationship between the PSLR and frequency difference are verified by computer simulation.
| Translated title of the contribution | Sparse Uniform Array Grating Lobe Suppression Using Dual-carrier Frequency Pattern Multiplication |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 534-541 |
| Number of pages | 8 |
| Journal | Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology |
| Volume | 45 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2023 |