Abstract
In order to solve the problem of calculation and storage in traditional Hough transform and improve the computation speed and veracity in the LFM signal parameter estimation, the time-frequency character of single-component LFM signal with noise was obtained by Wigner-Ville distribution(WVD), the instantaneous frequency was estimated using a maximum value method; the parameter estimation was realized though randomized Hough transform (RHT) based on a section of the frequency. The computed and analyzed results show that, compared with the troditional WVD-HT, WVD-RHT has lower computation load and better practicability, in which the computation time is about one third of WVD-HT, but the estimation precision is higher than WVD-HT.
| Original language | English |
|---|---|
| Pages (from-to) | 1642-1646 |
| Number of pages | 5 |
| Journal | Binggong Xuebao/Acta Armamentarii |
| Volume | 30 |
| Issue number | 12 |
| Publication status | Published - Dec 2009 |
Keywords
- Information processing technique
- Instantaneous frequency
- Parameter estimation
- Randomized Hough transform
- Wigner-Ville distribution