Abstract
When the size of target is big or the rotation angle is big, migration through resolution cells (MTRC) may occur when employing range-Doppler imaging algorithm in inverse synthetic aperture radar (ISAR), which can affect the imaging quality. Aiming at the problem of MTRC, the echo after dechirping is researched based on bistatic ISAR turntable model. And the cause of MTRC is analyzed. The match Fourier transform(MFT) is used to correct MTRC, which can eliminate the coupling of fast frequency, slow time and solve the image defocusing problem caused by MTRC. Simulation result shows that the correction algorithm based on MFT can correct the MTRC of maneuvering target and improve the image quality.
| Original language | English |
|---|---|
| Pages (from-to) | 562-569 |
| Number of pages | 8 |
| Journal | Shuju Caiji Yu Chuli/Journal of Data Acquisition and Processing |
| Volume | 29 |
| Issue number | 4 |
| Publication status | Published - 1 Jul 2014 |
Keywords
- Bistatic
- Inverse synthetic aperture radar
- Maneuvering target
- Match Fourier transform
- Migration through resolution cells