| The Effect Analysis and Correction of Phase errors by Satellite Attitude Errors using the FSA for the Spotlight SAR Processing |
|
Sang-Heun Shim |
| Spotlight SAR 신호처리기법 FSA를 이용한 위성 자세오차로 인한 위상오차 영향분석 및 보정 |
|
심상흔 |
|
국방과학연구소 |
|
|
| Abstract |
|
In this paper, we have described and simulated the effect analysis and correction of phase errors in the SAR rawdata induced by satellite attitude errors such as drift, jitter. This simulation is based on the FSA(Frequency Scaling Algorithm) for high resolution image formation of the Spotlight SAR. Phase errors produce the degradation of SAR image quality such as loss of resolution, geometric distortion, loss of contrast, spurious targets, and decrease in SNR. To resolve this problem, this paper presents method for correction of phase errors using the PGA(Phase Gradient Algorithm) in connection with the FSA. Several results of the phase errors correction are presented for Spotlight SAR rawdata. |
| Key Words:
Spotlight SAR Processing, Frequency Scaling Algorithm, Satellite Attitude Error, Phase Error, Phase Gradient Algorithm |
|
PDF Links
Full text via DOI
Download Citation
