| 摘要 |
A method for SAR processing according to the present invention includes: a step to get an ETF4 azimuth matched filter by an ETF4DT azimuth angle matching filter measuring part of a satellite; a step to change the axis of the ETF4 azimuth matched filter by an axis changing part of the satellite; and a step to get an ETF4ZDT azimuth matched filter by the ETF4DT azimuth angle matching filter measuring part of the satellite. The SAR image can be formed using the raw data of the observing mode for spotlight or sliding spotlight which were impossible to handle by the previous ETF4 method and when compared with the result brought by the Effective Velocity application, the quadratic range error can be reduced as much as a tenth or so. |
